Re: [MBZ] Compression numbers they are bragging about seem low to me
My OM603 with 300k tested between 425 and 450 on all six. Bruce Fisher gave it good care before I bought it. G Mann via Mercedes wrote: Diesel engine is a "compression ignition" engine, so to fire the fuel/air charge it must raise the temperature of the charge to a point at or above the flash point of the fuel/air charge, so the engine "lights off". Typical compression charge temps necessary to hit flash point for diesel is 400 degrees F. Ambient air temp plays a part in reaching that flash point, thus, glow plugs. Crank speed is another factor.. thus, the need for a strong battery. Next is compression condition of the engine. You can put a hair dryer in the intake, add a booster battery... but if you have low compression... very hard to start.. From my experience, the magic happens best between 390 and 420 psi on a hot engine compression test. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Compression numbers they are bragging about seem low to me
If a COLD diesel fires up on a dime you can skip any compression tests. On Tue, Jun 19, 2018 at 8:44 PM, Scott Ritchey via Mercedes < mercedes@okiebenz.com> wrote: > It's even more complicated. That graph is for a static compression ratio > with no heat transfer. In a real engine, there is heat loss to the cold > cylinder/head/piston plus leakage past the piston and an intake valve > that's still partially open at the beginning of the compression stroke. > After an engine is running compression is much higher (less heat loss, less > time to leak past piston, and less valve loss because of the the momentum > of incoming chatge) > > > -Original Message- > > From: Mercedes [mailto:mercedes-boun...@okiebenz.com] On Behalf Of > > Larry Turner via Mercedes > > Sent: Tuesday, June 19, 2018 7:44 PM > > To: mercedes@okiebenz.com > > Cc: Larry Turner > > Subject: Re: [MBZ] Compression numbers they are bragging about seem low > to > > me > > > > Thanks, > > > > That certainly makes sense.So my math method appears to be off by a > factor > > of 1.75 or so? I kept mulling that over and came to the [wrong] > conclusion > > about multiplying the stated compression time the atmospheric pressure > and > > failed to consider the heat needed? Now that you mention it, there are > so > > many variables at play it must be a much more complex formula than I > tried to > > make it.. > > > > Thanks for the explanation > > > > Larry --- > > > > > > On 06/19/2018 2:04 PM, G Mann via Mercedes wrote: > > > Diesel engine is a "compression ignition" engine, so to fire the > > > fuel/air charge it must raise the temperature of the charge to a point > > > at or above the flash point of the fuel/air charge, so the engine > "lights off". > > > > > > Typical compression charge temps necessary to hit flash point for > > > diesel is > > > 400 degrees F. > > > Ambient air temp plays a part in reaching that flash point, thus, glow > > > plugs. > > > Crank speed is another factor.. thus, the need for a strong battery. > > > Next is compression condition of the engine. > > > > > > You can put a hair dryer in the intake, add a booster battery... but > > > if you have low compression... very hard to start.. > > > > > > >From my experience, the magic happens best between 390 and 420 psi on > > > >a hot > > > engine compression test. > > > > > > On Tue, Jun 19, 2018 at 10:49 AM, Larry Turner via Mercedes < > > > mercedes@okiebenz.com> wrote: > > > > > >> Speaking of what an engines compression should be, I always thought > > >> it was the compression ration X atmospheric pressure. So a engine > > >> with 18:1 (as a diesel might be) would look for 18X14.7 (approx) = > > >> 264psi or so. While a gas engine at 7:1 would be ~103. Is this > logical? > > >> > > >> LarryT > > >> > > >> 91 300D (RIP ??) > > >> > > >> 06 E350 (POS also dead) > > >> > > >> 06 Ford Explorer > > >> > > >> 74 911 > > >> > > >> 66 MGB > > >> > > >> > > >> On 06/18/2018 1:51 PM, Andrew Strasfogel via Mercedes wrote:Speaking > > >> of > > >> > > >>> Seller seems WAY too enthusiastic. Buyer beware. > > >>> 264 > > >>> On Mon, Jun 18, 2018 at 10:33 AM, Frederick Moir via Mercedes < > > >>> mercedes@okiebenz.com> wrote: > > >>> > > >>> Depends on cranking speed amongst other criteria. > > >>>> Fred. > > >>>> > > >>>> On Mon, Jun 18, 2018 at 10:18 AM, Kaleb C. Striplin via Mercedes < > > >>>> mercedes@okiebenz.com> wrote: > > >>>> > > >>>> Closer to 400 or over in my mind > > >>>>> Sent from my iPhone > > >>>>> > > >>>>> On Jun 17, 2018, at 9:49 PM, Dwight Giles > > >>>>> wrote: > > >>>>> > > >>>>>> What should they be? > > >>>>>> > > >>>>>> Dwight Giles Jr. > > >>>>>> Wickford RI > > >>>>>> > > >>>>>> On Jun 17, 2018 10:21 PM, "Kaleb C. Striplin via Mercedes" < > > >>>>>> mercedes@okiebenz.com&
Re: [MBZ] Compression numbers they are bragging about seem low to me
It's even more complicated. That graph is for a static compression ratio with no heat transfer. In a real engine, there is heat loss to the cold cylinder/head/piston plus leakage past the piston and an intake valve that's still partially open at the beginning of the compression stroke. After an engine is running compression is much higher (less heat loss, less time to leak past piston, and less valve loss because of the the momentum of incoming chatge) > -Original Message- > From: Mercedes [mailto:mercedes-boun...@okiebenz.com] On Behalf Of > Larry Turner via Mercedes > Sent: Tuesday, June 19, 2018 7:44 PM > To: mercedes@okiebenz.com > Cc: Larry Turner > Subject: Re: [MBZ] Compression numbers they are bragging about seem low to > me > > Thanks, > > That certainly makes sense.So my math method appears to be off by a factor > of 1.75 or so? I kept mulling that over and came to the [wrong] conclusion > about multiplying the stated compression time the atmospheric pressure and > failed to consider the heat needed? Now that you mention it, there are so > many variables at play it must be a much more complex formula than I tried to > make it.. > > Thanks for the explanation > > Larry --- > > > On 06/19/2018 2:04 PM, G Mann via Mercedes wrote: > > Diesel engine is a "compression ignition" engine, so to fire the > > fuel/air charge it must raise the temperature of the charge to a point > > at or above the flash point of the fuel/air charge, so the engine "lights > > off". > > > > Typical compression charge temps necessary to hit flash point for > > diesel is > > 400 degrees F. > > Ambient air temp plays a part in reaching that flash point, thus, glow > > plugs. > > Crank speed is another factor.. thus, the need for a strong battery. > > Next is compression condition of the engine. > > > > You can put a hair dryer in the intake, add a booster battery... but > > if you have low compression... very hard to start.. > > > > >From my experience, the magic happens best between 390 and 420 psi on > > >a hot > > engine compression test. > > > > On Tue, Jun 19, 2018 at 10:49 AM, Larry Turner via Mercedes < > > mercedes@okiebenz.com> wrote: > > > >> Speaking of what an engines compression should be, I always thought > >> it was the compression ration X atmospheric pressure. So a engine > >> with 18:1 (as a diesel might be) would look for 18X14.7 (approx) = > >> 264psi or so. While a gas engine at 7:1 would be ~103. Is this logical? > >> > >> LarryT > >> > >> 91 300D (RIP ??) > >> > >> 06 E350 (POS also dead) > >> > >> 06 Ford Explorer > >> > >> 74 911 > >> > >> 66 MGB > >> > >> > >> On 06/18/2018 1:51 PM, Andrew Strasfogel via Mercedes wrote:Speaking > >> of > >> > >>> Seller seems WAY too enthusiastic. Buyer beware. > >>> 264 > >>> On Mon, Jun 18, 2018 at 10:33 AM, Frederick Moir via Mercedes < > >>> mercedes@okiebenz.com> wrote: > >>> > >>> Depends on cranking speed amongst other criteria. > >>>> Fred. > >>>> > >>>> On Mon, Jun 18, 2018 at 10:18 AM, Kaleb C. Striplin via Mercedes < > >>>> mercedes@okiebenz.com> wrote: > >>>> > >>>> Closer to 400 or over in my mind > >>>>> Sent from my iPhone > >>>>> > >>>>> On Jun 17, 2018, at 9:49 PM, Dwight Giles > >>>>> wrote: > >>>>> > >>>>>> What should they be? > >>>>>> > >>>>>> Dwight Giles Jr. > >>>>>> Wickford RI > >>>>>> > >>>>>> On Jun 17, 2018 10:21 PM, "Kaleb C. Striplin via Mercedes" < > >>>>>> mercedes@okiebenz.com> wrote: > >>>>>> 1979 Mercedes-Benz 300SD **VERY CLEAN** > >>>>>>> https://albuquerque.craigslist.org/cto/d/1979- > >>>>>>> > >>>>>> mercedes-benz-300sd-very/ > >>>>> 6612681421.html > >>>>> > >>>>>>> Sent from my iPhone > >>>>>>> > >>>>>>> ___ > >>>>>>> http://www.okiebenz.com > >>>>>>> > >>>>>>> To search list archives htt
Re: [MBZ] Compression numbers they are bragging about seem low to me
https://www.youtube.com/watch?v=ucAryeV1Vr0 Here is an example youtube video of how it was done "back in the day" with low compression diesel engines, slow crank speeds, and "grunt starters". "We've come a long way baby" so to speak. On Tue, Jun 19, 2018 at 4:44 PM, Larry Turner via Mercedes < mercedes@okiebenz.com> wrote: > Thanks, > > That certainly makes sense.So my math method appears to be off by a > factor of 1.75 or so? I kept mulling that over and came to the [wrong] > conclusion about multiplying the stated compression time the atmospheric > pressure and failed to consider the heat needed? Now that you mention it, > there are so many variables at play it must be a much more complex formula > than I tried to make it.. > > Thanks for the explanation > > Larry --- > > > On 06/19/2018 2:04 PM, G Mann via Mercedes wrote: > >> Diesel engine is a "compression ignition" engine, so to fire the fuel/air >> charge it must raise the temperature of the charge to a point at or above >> the flash point of the fuel/air charge, so the engine "lights off". >> >> Typical compression charge temps necessary to hit flash point for diesel >> is >> 400 degrees F. >> Ambient air temp plays a part in reaching that flash point, thus, glow >> plugs. >> Crank speed is another factor.. thus, the need for a strong battery. >> Next is compression condition of the engine. >> >> You can put a hair dryer in the intake, add a booster battery... but if >> you >> have low compression... very hard to start.. >> >> >From my experience, the magic happens best between 390 and 420 psi on a >> hot >> engine compression test. >> >> >> On Tue, Jun 19, 2018 at 10:49 AM, Larry Turner via Mercedes < >> mercedes@okiebenz.com> wrote: >> >> Speaking of what an engines compression should be, I always thought it was >>> the compression ration X atmospheric pressure. So a engine with 18:1 >>> (as a >>> diesel might be) would look for 18X14.7 (approx) = 264psi or so. While a >>> gas engine at 7:1 would be ~103. Is this logical? >>> >>> LarryT >>> >>> 91 300D (RIP ??) >>> >>> 06 E350 (POS also dead) >>> >>> 06 Ford Explorer >>> >>> 74 911 >>> >>> 66 MGB >>> >>> >>> On 06/18/2018 1:51 PM, Andrew Strasfogel via Mercedes wrote:Speaking of >>> >>> Seller seems WAY too enthusiastic. Buyer beware. 264 On Mon, Jun 18, 2018 at 10:33 AM, Frederick Moir via Mercedes < mercedes@okiebenz.com> wrote: Depends on cranking speed amongst other criteria. > Fred. > > On Mon, Jun 18, 2018 at 10:18 AM, Kaleb C. Striplin via Mercedes < > mercedes@okiebenz.com> wrote: > > Closer to 400 or over in my mind > >> Sent from my iPhone >> >> On Jun 17, 2018, at 9:49 PM, Dwight Giles >> wrote: >> >> What should they be? >>> >>> Dwight Giles Jr. >>> Wickford RI >>> >>> On Jun 17, 2018 10:21 PM, "Kaleb C. Striplin via Mercedes" < >>> mercedes@okiebenz.com> wrote: >>> 1979 Mercedes-Benz 300SD **VERY CLEAN** >>> https://albuquerque.craigslist.org/cto/d/1979- mercedes-benz-300sd-very/ >>> >> 6612681421.html >> >> Sent from my iPhone ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ >>> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> >> >> >> -- > Fred Moir > Lynn MA > Diesel preferred > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > ___ > http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ >>> http://www.okiebenz.com >>> >>> To search list archives http://www.okiebenz.com/archive/ >>> >>> To Unsubscribe or change delivery options go to: >>> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >>> >>> >>> ___ >> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> >> >>
Re: [MBZ] Compression numbers they are bragging about seem low to me
Thanks, That certainly makes sense. So my math method appears to be off by a factor of 1.75 or so? I kept mulling that over and came to the [wrong] conclusion about multiplying the stated compression time the atmospheric pressure and failed to consider the heat needed? Now that you mention it, there are so many variables at play it must be a much more complex formula than I tried to make it.. Thanks for the explanation Larry --- On 06/19/2018 2:04 PM, G Mann via Mercedes wrote: Diesel engine is a "compression ignition" engine, so to fire the fuel/air charge it must raise the temperature of the charge to a point at or above the flash point of the fuel/air charge, so the engine "lights off". Typical compression charge temps necessary to hit flash point for diesel is 400 degrees F. Ambient air temp plays a part in reaching that flash point, thus, glow plugs. Crank speed is another factor.. thus, the need for a strong battery. Next is compression condition of the engine. You can put a hair dryer in the intake, add a booster battery... but if you have low compression... very hard to start.. >From my experience, the magic happens best between 390 and 420 psi on a hot engine compression test. On Tue, Jun 19, 2018 at 10:49 AM, Larry Turner via Mercedes < mercedes@okiebenz.com> wrote: Speaking of what an engines compression should be, I always thought it was the compression ration X atmospheric pressure. So a engine with 18:1 (as a diesel might be) would look for 18X14.7 (approx) = 264psi or so. While a gas engine at 7:1 would be ~103. Is this logical? LarryT 91 300D (RIP ??) 06 E350 (POS also dead) 06 Ford Explorer 74 911 66 MGB On 06/18/2018 1:51 PM, Andrew Strasfogel via Mercedes wrote:Speaking of Seller seems WAY too enthusiastic. Buyer beware. 264 On Mon, Jun 18, 2018 at 10:33 AM, Frederick Moir via Mercedes < mercedes@okiebenz.com> wrote: Depends on cranking speed amongst other criteria. Fred. On Mon, Jun 18, 2018 at 10:18 AM, Kaleb C. Striplin via Mercedes < mercedes@okiebenz.com> wrote: Closer to 400 or over in my mind Sent from my iPhone On Jun 17, 2018, at 9:49 PM, Dwight Giles wrote: What should they be? Dwight Giles Jr. Wickford RI On Jun 17, 2018 10:21 PM, "Kaleb C. Striplin via Mercedes" < mercedes@okiebenz.com> wrote: 1979 Mercedes-Benz 300SD **VERY CLEAN** https://albuquerque.craigslist.org/cto/d/1979- mercedes-benz-300sd-very/ 6612681421.html Sent from my iPhone ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com -- Fred Moir Lynn MA Diesel preferred ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Compression numbers they are bragging about seem low to me
It's not that simple. Maybe this will help: https://en.wikipedia.org/wiki/Compression_ratio#/media/File:Compression_ratio_versus_pressure_ratio.png > -Original Message- > From: Mercedes [mailto:mercedes-boun...@okiebenz.com] On Behalf Of > Larry Turner via Mercedes > Sent: Tuesday, June 19, 2018 1:50 PM > To: mercedes@okiebenz.com > Cc: Larry Turner > Subject: Re: [MBZ] Compression numbers they are bragging about seem low to > me > > Speaking of what an engines compression should be, I always thought it was > the compression ration X atmospheric pressure. So a engine with > 18:1 (as a diesel might be) would look for 18X14.7 (approx) = 264psi or > so. While a gas engine at 7:1 would be ~103. Is this logical? > > LarryT > > 91 300D (RIP ??) > > 06 E350 (POS also dead) > > 06 Ford Explorer > > 74 911 > > 66 MGB > > > On 06/18/2018 1:51 PM, Andrew Strasfogel via Mercedes wrote:Speaking of > > Seller seems WAY too enthusiastic. Buyer beware. > > 264 > > On Mon, Jun 18, 2018 at 10:33 AM, Frederick Moir via Mercedes < > > mercedes@okiebenz.com> wrote: > > > >> Depends on cranking speed amongst other criteria. > >> Fred. > >> > >> On Mon, Jun 18, 2018 at 10:18 AM, Kaleb C. Striplin via Mercedes < > >> mercedes@okiebenz.com> wrote: > >> > >>> Closer to 400 or over in my mind > >>> > >>> Sent from my iPhone > >>> > >>>> On Jun 17, 2018, at 9:49 PM, Dwight Giles > >>> wrote: > >>>> What should they be? > >>>> > >>>> Dwight Giles Jr. > >>>> Wickford RI > >>>> > >>>>> On Jun 17, 2018 10:21 PM, "Kaleb C. Striplin via Mercedes" < > >>> mercedes@okiebenz.com> wrote: > >>>>> 1979 Mercedes-Benz 300SD **VERY CLEAN** > >>>>> > >>>>> https://albuquerque.craigslist.org/cto/d/1979- > >> mercedes-benz-300sd-very/ > >>> 6612681421.html > >>>>> > >>>>> Sent from my iPhone > >>>>> > >>>>> ___ > >>>>> http://www.okiebenz.com > >>>>> > >>>>> To search list archives http://www.okiebenz.com/archive/ > >>>>> > >>>>> To Unsubscribe or change delivery options go to: > >>>>> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > >>>>> > >>> ___ > >>> http://www.okiebenz.com > >>> > >>> To search list archives http://www.okiebenz.com/archive/ > >>> > >>> To Unsubscribe or change delivery options go to: > >>> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > >>> > >>> > >> > >> -- > >> Fred Moir > >> Lynn MA > >> Diesel preferred > >> ___ > >> http://www.okiebenz.com > >> > >> To search list archives http://www.okiebenz.com/archive/ > >> > >> To Unsubscribe or change delivery options go to: > >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > >> > >> > > ___ > > http://www.okiebenz.com > > > > To search list archives http://www.okiebenz.com/archive/ > > > > To Unsubscribe or change delivery options go to: > > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > > > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Compression numbers they are bragging about seem low to me
Diesel engine is a "compression ignition" engine, so to fire the fuel/air charge it must raise the temperature of the charge to a point at or above the flash point of the fuel/air charge, so the engine "lights off". Typical compression charge temps necessary to hit flash point for diesel is 400 degrees F. Ambient air temp plays a part in reaching that flash point, thus, glow plugs. Crank speed is another factor.. thus, the need for a strong battery. Next is compression condition of the engine. You can put a hair dryer in the intake, add a booster battery... but if you have low compression... very hard to start.. >From my experience, the magic happens best between 390 and 420 psi on a hot engine compression test. On Tue, Jun 19, 2018 at 10:49 AM, Larry Turner via Mercedes < mercedes@okiebenz.com> wrote: > Speaking of what an engines compression should be, I always thought it was > the compression ration X atmospheric pressure. So a engine with 18:1 (as a > diesel might be) would look for 18X14.7 (approx) = 264psi or so. While a > gas engine at 7:1 would be ~103. Is this logical? > > LarryT > > 91 300D (RIP ??) > > 06 E350 (POS also dead) > > 06 Ford Explorer > > 74 911 > > 66 MGB > > > On 06/18/2018 1:51 PM, Andrew Strasfogel via Mercedes wrote:Speaking of > >> Seller seems WAY too enthusiastic. Buyer beware. >> 264 >> On Mon, Jun 18, 2018 at 10:33 AM, Frederick Moir via Mercedes < >> mercedes@okiebenz.com> wrote: >> >> Depends on cranking speed amongst other criteria. >>> Fred. >>> >>> On Mon, Jun 18, 2018 at 10:18 AM, Kaleb C. Striplin via Mercedes < >>> mercedes@okiebenz.com> wrote: >>> >>> Closer to 400 or over in my mind Sent from my iPhone On Jun 17, 2018, at 9:49 PM, Dwight Giles > wrote: > What should they be? > > Dwight Giles Jr. > Wickford RI > > On Jun 17, 2018 10:21 PM, "Kaleb C. Striplin via Mercedes" < >> > mercedes@okiebenz.com> wrote: > 1979 Mercedes-Benz 300SD **VERY CLEAN** >> >> https://albuquerque.craigslist.org/cto/d/1979- >> > mercedes-benz-300sd-very/ >>> 6612681421.html > >> Sent from my iPhone >> >> ___ >> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> >> ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >>> -- >>> Fred Moir >>> Lynn MA >>> Diesel preferred >>> ___ >>> http://www.okiebenz.com >>> >>> To search list archives http://www.okiebenz.com/archive/ >>> >>> To Unsubscribe or change delivery options go to: >>> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >>> >>> >>> ___ >> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> >> >> > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Compression numbers they are bragging about seem low to me
Speaking of what an engines compression should be, I always thought it was the compression ration X atmospheric pressure. So a engine with 18:1 (as a diesel might be) would look for 18X14.7 (approx) = 264psi or so. While a gas engine at 7:1 would be ~103. Is this logical? LarryT 91 300D (RIP ??) 06 E350 (POS also dead) 06 Ford Explorer 74 911 66 MGB On 06/18/2018 1:51 PM, Andrew Strasfogel via Mercedes wrote:Speaking of Seller seems WAY too enthusiastic. Buyer beware. 264 On Mon, Jun 18, 2018 at 10:33 AM, Frederick Moir via Mercedes < mercedes@okiebenz.com> wrote: Depends on cranking speed amongst other criteria. Fred. On Mon, Jun 18, 2018 at 10:18 AM, Kaleb C. Striplin via Mercedes < mercedes@okiebenz.com> wrote: Closer to 400 or over in my mind Sent from my iPhone On Jun 17, 2018, at 9:49 PM, Dwight Giles wrote: What should they be? Dwight Giles Jr. Wickford RI On Jun 17, 2018 10:21 PM, "Kaleb C. Striplin via Mercedes" < mercedes@okiebenz.com> wrote: 1979 Mercedes-Benz 300SD **VERY CLEAN** https://albuquerque.craigslist.org/cto/d/1979- mercedes-benz-300sd-very/ 6612681421.html Sent from my iPhone ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com -- Fred Moir Lynn MA Diesel preferred ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Compression numbers they are bragging about seem low to me
Seller seems WAY too enthusiastic. Buyer beware. On Mon, Jun 18, 2018 at 10:33 AM, Frederick Moir via Mercedes < mercedes@okiebenz.com> wrote: > Depends on cranking speed amongst other criteria. > Fred. > > On Mon, Jun 18, 2018 at 10:18 AM, Kaleb C. Striplin via Mercedes < > mercedes@okiebenz.com> wrote: > > > Closer to 400 or over in my mind > > > > Sent from my iPhone > > > > > On Jun 17, 2018, at 9:49 PM, Dwight Giles > > wrote: > > > > > > What should they be? > > > > > > Dwight Giles Jr. > > > Wickford RI > > > > > >> On Jun 17, 2018 10:21 PM, "Kaleb C. Striplin via Mercedes" < > > mercedes@okiebenz.com> wrote: > > >> 1979 Mercedes-Benz 300SD **VERY CLEAN** > > >> > > >> https://albuquerque.craigslist.org/cto/d/1979- > mercedes-benz-300sd-very/ > > 6612681421.html > > >> > > >> > > >> Sent from my iPhone > > >> > > >> ___ > > >> http://www.okiebenz.com > > >> > > >> To search list archives http://www.okiebenz.com/archive/ > > >> > > >> To Unsubscribe or change delivery options go to: > > >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > >> > > ___ > > http://www.okiebenz.com > > > > To search list archives http://www.okiebenz.com/archive/ > > > > To Unsubscribe or change delivery options go to: > > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > > > > -- > Fred Moir > Lynn MA > Diesel preferred > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Compression numbers they are bragging about seem low to me
Depends on cranking speed amongst other criteria. Fred. On Mon, Jun 18, 2018 at 10:18 AM, Kaleb C. Striplin via Mercedes < mercedes@okiebenz.com> wrote: > Closer to 400 or over in my mind > > Sent from my iPhone > > > On Jun 17, 2018, at 9:49 PM, Dwight Giles > wrote: > > > > What should they be? > > > > Dwight Giles Jr. > > Wickford RI > > > >> On Jun 17, 2018 10:21 PM, "Kaleb C. Striplin via Mercedes" < > mercedes@okiebenz.com> wrote: > >> 1979 Mercedes-Benz 300SD **VERY CLEAN** > >> > >> https://albuquerque.craigslist.org/cto/d/1979-mercedes-benz-300sd-very/ > 6612681421.html > >> > >> > >> Sent from my iPhone > >> > >> ___ > >> http://www.okiebenz.com > >> > >> To search list archives http://www.okiebenz.com/archive/ > >> > >> To Unsubscribe or change delivery options go to: > >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > >> > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > -- Fred Moir Lynn MA Diesel preferred ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Compression numbers they are bragging about seem low to me
Closer to 400 or over in my mind Sent from my iPhone > On Jun 17, 2018, at 9:49 PM, Dwight Giles wrote: > > What should they be? > > Dwight Giles Jr. > Wickford RI > >> On Jun 17, 2018 10:21 PM, "Kaleb C. Striplin via Mercedes" >> wrote: >> 1979 Mercedes-Benz 300SD **VERY CLEAN** >> >> https://albuquerque.craigslist.org/cto/d/1979-mercedes-benz-300sd-very/6612681421.html >> >> >> Sent from my iPhone >> >> ___ >> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Compression numbers they are bragging about seem low to me
At last check (10+ years ago) my 82 SD read 400+-20 psi. > -Original Message- > From: Mercedes [mailto:mercedes-boun...@okiebenz.com] On Behalf Of > Dwight Giles via Mercedes > Sent: Sunday, June 17, 2018 10:50 PM > To: Mercedes Discussion List > Cc: Dwight Giles > Subject: Re: [MBZ] Compression numbers they are bragging about seem low to > me > > What should they be? > > Dwight Giles Jr. > Wickford RI > > On Jun 17, 2018 10:21 PM, "Kaleb C. Striplin via Mercedes" < > mercedes@okiebenz.com> wrote: > > > 1979 Mercedes-Benz 300SD **VERY CLEAN** > > > > https://albuquerque.craigslist.org/cto/d/1979-mercedes-benz-300sd-very > > / > > 6612681421.html > > > > > > Sent from my iPhone > > > > ___ > > http://www.okiebenz.com > > > > To search list archives http://www.okiebenz.com/archive/ > > > > To Unsubscribe or change delivery options go to: > > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Compression numbers they are bragging about seem low to me
That was my thought. But also could have been tested cold. Sent from my iPhone > On Jun 17, 2018, at 9:46 PM, G Mann via Mercedes > wrote: > > How long since the last valve adjustment? > > Since they will give low compression if not kept adjusted. > > On Sun, Jun 17, 2018 at 7:21 PM, Kaleb C. Striplin via Mercedes < > mercedes@okiebenz.com> wrote: > >> 1979 Mercedes-Benz 300SD **VERY CLEAN** >> >> https://albuquerque.craigslist.org/cto/d/1979-mercedes-benz-300sd-very/ >> 6612681421.html >> >> >> Sent from my iPhone >> >> ___ >> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> >> > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Compression numbers they are bragging about seem low to me
What should they be? Dwight Giles Jr. Wickford RI On Jun 17, 2018 10:21 PM, "Kaleb C. Striplin via Mercedes" < mercedes@okiebenz.com> wrote: > 1979 Mercedes-Benz 300SD **VERY CLEAN** > > https://albuquerque.craigslist.org/cto/d/1979-mercedes-benz-300sd-very/ > 6612681421.html > > > Sent from my iPhone > > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Compression numbers they are bragging about seem low to me
How long since the last valve adjustment? Since they will give low compression if not kept adjusted. On Sun, Jun 17, 2018 at 7:21 PM, Kaleb C. Striplin via Mercedes < mercedes@okiebenz.com> wrote: > 1979 Mercedes-Benz 300SD **VERY CLEAN** > > https://albuquerque.craigslist.org/cto/d/1979-mercedes-benz-300sd-very/ > 6612681421.html > > > Sent from my iPhone > > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] Compression numbers they are bragging about seem low to me
1979 Mercedes-Benz 300SD **VERY CLEAN** https://albuquerque.craigslist.org/cto/d/1979-mercedes-benz-300sd-very/6612681421.html Sent from my iPhone ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
