Hmm, this could lead to some interesting options for someone trying to increase their MPG. Cam grounding and head shaving come to mind (assuming higher compression is good for MPG - not sure if it is or not).
I'll have to put some thought into this if I do have a leaky head. On Wed, Jun 25, 2008 at 12:06 AM, Bill Cardell <[EMAIL PROTECTED]> wrote: > you could try, but you'll probably end up doing a gasket if that is what > it turns out to be. > > > Bill Cardell > TurboDog's Dad > www.flyinmiata.com > www.fmwestfield.com > orders 1-800-FLY-MX5S > Before you call our tech line (970.464.5600) please check out the > *FAQ*<http://www.flyinmiata.com/FAQ/>section of our website > > Don't miss Flyin' Miata's Open House! Aug 14-17, 2008 > > > ------------------------------ > *From:* Robert McElwee [mailto:[EMAIL PROTECTED] > *Sent:* Tuesday, June 24, 2008 9:32 PM > *To:* Bill Cardell > *Cc:* Ray Ayala; miatapower List > > *Subject:* Re: Tips for Installing a new rear main seal ??? > > I cleaned up all the oil and will have to inspect the engine for the leak > again. If it does turn out to be a head gasket (there was some oil around > the bottom of the head on the leaky oil filler cap side) do you just > re-torque the bolts or is it more involved than that? > > > On Sat, Jun 21, 2008 at 12:43 PM, Bill Cardell <[EMAIL PROTECTED]> > wrote: > >> FWIW, we find most "leaking" rear mains really aren't. It is usually the >> CAS o-ring running all the way down, or occasionally a head gasket (if a >> 1.6). Pretty sure we've never seen a rear main brg fail by itself. I agree >> with Ray that a failing rear main brg would cause the seal to fail, just >> don't recall seeing it happen on a Miata. >> >> >> Bill Cardell >> TurboDog's Dad >> www.flyinmiata.com >> www.fmwestfield.com >> orders 1-800-FLY-MX5S >> Before you call our tech line (970.464.5600) please check out the >> *FAQ*<http://www.flyinmiata.com/FAQ/>section of our website >> >> Don't miss Flyin' Miata's Open House! Aug 14-17, 2008 >> >> >> ------------------------------ >> *From:* [EMAIL PROTECTED] [mailto: >> [EMAIL PROTECTED] *On Behalf Of *Ray Ayala >> *Sent:* Saturday, June 21, 2008 10:04 AM >> *To:* Robert McElwee >> *Cc:* miatapower List >> >> *Subject:* Re: Tips for Installing a new rear main seal ??? >> >> Changing the main bearings, any of them, requires pulling the pan. >> Once that's off you might as well replace all of the main and rod bearings >> because they're all probably equally worn. It's always possible though >> rather unlikely that the rear seal was just defective, and it can be changed >> when the flywheel is off. And while the trans is out its also easy measure >> how far the crank can move in a the fore/aft direction to check the thrust >> bearing wear ... a separate possible (and fairly common) problem. >> >> ----- Original Message ----- >> *From:* Robert McElwee <[EMAIL PROTECTED]> >> *To:* Ray Ayala <[EMAIL PROTECTED]> >> *Cc:* miatapower List <[email protected]> >> *Sent:* Friday, June 20, 2008 9:47 PM >> *Subject:* Re: Tips for Installing a new rear main seal ??? >> >> Hmmm, how do I know if the bearing is gone? After changing the >> clutch/pilot a few years ago I immediately started getting a slight >> "bearing noise" while decelerating. I haven't noticed it much lately but I >> am sure it is still there. >> >> The car has 105K miles on it and started leaking about 5K (6 months) ago. >> I am not a gear head and not exactly sure what changing the rear main >> bearing entails. Is this something that can/should be done when I change >> this seal. >> >> >> On Sat, Jun 21, 2008 at 12:38 AM, Ray Ayala <[EMAIL PROTECTED]> wrote: >> >>> FWIW (and YMMV) rear engine seals don't usually go bad until prompted >>> to by a worn out rear main bearing. >>> >>> ----- Original Message ----- >>> *From:* Robert McElwee <[EMAIL PROTECTED]> >>> *To:* Ray Ayala <[EMAIL PROTECTED]> >>> *Cc:* miatapower List <[email protected]> >>> *Sent:* Friday, June 20, 2008 9:20 PM >>> *Subject:* Re: Tips for Installing a new rear main seal ??? >>> >>> Rear engine seal (I hope). Oil coming from the weep hole in the bell >>> housing. I'm half a quart down right now on the engine oil so I am assuming >>> that is it. I guess we will find out when we pull it. >>> >>> Definitely not CAS o-ring (recently replaced) due to the weep hole leak. >>> >>> On Fri, Jun 20, 2008 at 10:46 PM, Ray Ayala <[EMAIL PROTECTED]> wrote: >>> >>>> Rear engine seal or front trans seal? (or CAS o-ring?) >>>> >>>> ----- Original Message ----- >>>> *From:* Robert McElwee <[EMAIL PROTECTED]> >>>> *To:* miatapower List <[email protected]> >>>> *Sent:* Friday, June 20, 2008 2:07 PM >>>> *Subject:* Tips for Installing a new rear main seal ??? >>>> >>>> My oil leak is getting a little worse and I think I am close to >>>> pulling the seal and replacing it. I have had a new seal laying around >>>> forever but have been too lazy to pull the tranny and do the work. I know >>>> how to pull the tranny but anyone have tip for pulling the seal or >>>> replacing >>>> it? Just looking for any little tricks you guys may have up your sleeve... >>>> >>>> >>>> -- >>>> Robert McElwee and Blue Flash >>>> "The 40 MPG Miata" >>>> www.lightweightmiata.com/mpg >>>> >>>> Lightweight Miata Forum: >>>> www.lightweightmiata.com/forum >>>> >>>> The Miata Trailer Project: >>>> www.lightweightmiata.com/trailer >>>> >>>> ------------------------------ >>>> >>>> _______________________________________________ >>>> Miatapower mailing list >>>> [email protected] >>>> http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower >>>> >>>> >>> >>> >>> -- >>> Robert McElwee and Blue Flash >>> "The 40 MPG Miata" >>> www.lightweightmiata.com/mpg >>> >>> Lightweight Miata Forum: >>> www.lightweightmiata.com/forum >>> >>> The Miata Trailer Project: >>> www.lightweightmiata.com/trailer >>> >>> >> >> >> -- >> Robert McElwee and Blue Flash >> "The 40 MPG Miata" >> www.lightweightmiata.com/mpg >> >> Lightweight Miata Forum: >> www.lightweightmiata.com/forum >> >> The Miata Trailer Project: >> www.lightweightmiata.com/trailer >> >> > > > -- > Robert McElwee and Blue Flash > "The 40 MPG Miata" > www.lightweightmiata.com/mpg > > Lightweight Miata Forum: > www.lightweightmiata.com/forum > > The Miata Trailer Project: > www.lightweightmiata.com/trailer > -- Robert McElwee and Blue Flash "The 40 MPG Miata" www.lightweightmiata.com/mpg Lightweight Miata Forum: www.lightweightmiata.com/forum The Miata Trailer Project: www.lightweightmiata.com/trailer
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