The problem is more likely the engine is running too slow. The 85 Andrew
has is higher geared and turns lower rpm's at the same speed as most w123's.
Mike
On Dec 6, 2012 4:48 PM, "Randy Bennell" <rbenn...@bennell.ca> wrote:
> On 06/12/2012 1:52 PM, Rick Knoble wrote:
>
>> On Dec 6, 2012, at 1:26 PM, "Andrew Strasfogel" <astrasfo...@gmail.com>
>> wrote:
>>
>> Does anyone have possible tweaks ("tuneups") that could coax
>>> a few more mpg out of the engine?
>>>
>>
>> 1. Check timing chain stretch.
>> 2. Check injector spray patterns.
>> 3. Replace what needs replaced.
>> 4. Advance/Retard cam timing in 2 degree increments with offset key until
>> optimum mileage is achieved.
>> 5. Advance/Retard injection pump timing in 2 degree increments until
>> optimum mileage is achieved.
>>
>> Achieving maximum efficiency/performance is a time consuming process.
>> This guy did pretty well performance wise, and his timing adjustments are
>> documented in the comments.
>>
>> http://www.youtube.com/watch?**v=PFhaRefTRUM&feature=youtube_**
>> gdata_player<http://www.youtube.com/watch?v=PFhaRefTRUM&feature=youtube_gdata_player>
>>
>> Rick
>> Sent from my iPhone
>>
>>
> Also, non engine things:
>
> Make the car lighter. Start removing things that you don't need. Get a
> space saver spare tire. Remove the roof rack if it has one.
> Remove the back seats if you rarely use them.
>
> Try a spoiler under the front bumper. May not help much at city speeds but
> on the highway, it can be helpful to move the air around the car rather
> than let it go under the car.
>
> Find some skinny tires and inflate them to higher than normal pressures.
> The ride might suffer and be careful when it rains, but if you want to make
> improvements in efficiency, you have to pay the price somehow.
>
> Have a look at the front end. Are there gaps that you could close up in
> some manner? Does it need the whole radiator opening or could you close it
> up a bit?
>
> Have a look at the back end. Wagons and trucks create a vacuum behind them
> because of their shape. That is why the back window gets dirty. Experiment
> with a wing on the back above the door. Size, shape, angle? Who knows what
> will work the best. You have to be the inventor here unless you can find
> something online.
>
> Get rid of the engine driven fan on the rad. Put in an electric one. Part
> of the time, it will not run and will thus save energy.
>
> I am sure there are other ideas too but you get the idea. Have a look at
> some of the new cars and compare them to your mid 80's car. What are the
> car makers doing now that don't appear on your car?
>
> Back to the engine. Does it run at an optimum temperature? If it runs hot
> or cold, it probably is not as efficient as it could be. Are you running
> synthetic lubricants every where that you can?
>
> Are the brakes dragging?
>
> What sort of rpm's are you turning? Is a wagon geared differently than a
> sedan? If you don't normally haul much, then you may not need the lower
> gear. Can you regear to reduce your rpm's at speed?
>
> There were after market gear reduction units that worked like an
> overdrive. Do you have enough power to make one of them work to reduce rpm?
>
> Randy
>
>
>
>
>
> ______________________________**_________
> http://www.okiebenz.com
> For new and used parts go to www.okiebenz.com
> To search list archives
> http://www.okiebenz.com/**archive/<http://www.okiebenz.com/archive/>
>
> To Unsubscribe or change delivery options go to:
> http://mail.okiebenz.com/**mailman/listinfo/mercedes_**okiebenz.com<http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com>
>
_______________________________________
http://www.okiebenz.com
For new and used parts go to 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
