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PeachParts Mercedes-Benz Forum (http://www.peachparts.com/shopforum/)
-   Diesel Discussion (http://www.peachparts.com/shopforum/diesel-discussion/)
-   -   slightly bigger and lighter turbo improve mpg? (http://www.peachparts.com/shopforum/diesel-discussion/359720-slightly-bigger-lighter-turbo-improve-mpg.html)

Mxfrank 09-13-2014 12:54 PM
Quote:
Originally Posted by benzdude42 (Post 3385376)
I have a 85 torque converter. Will it really help? I was also thinkin about the 2.47 diff.
This may help, but you will need to recalibrate your speedometer.

I like the idea of a manual transmission, but it's a bigger challenge to find & install.

leathermang 09-13-2014 02:26 PM
For a car out on the highway most of the time...
looking for a different gear ratio for the Third Member is way easier to do...

winmutt 09-13-2014 03:08 PM
Quote:
Originally Posted by Mxfrank (Post 3385504)
This may help, but you will need to recalibrate your speedometer.

I like the idea of a manual transmission, but it's a bigger challenge to find & install.
The difference between replacing the torque converter and installing a manual, labor wise, is the pedal cluster. Not a big one..

leathermang 09-13-2014 03:20 PM
Quote:
Originally Posted by winmutt (Post 3385549)
The difference between replacing the torque converter and installing a manual, labor wise, is the pedal cluster. Not a big one..
Actually the main problem in doing it right...
is finding a 617 FLYWHEEL......
many wind up using a 616 flywheel.... and many of those report a vibration which they never find the cause of....

tjts1 09-13-2014 03:38 PM
Quote:
Originally Posted by leathermang (Post 3385554)
Actually the main problem in doing it right...
is finding a 617 FLYWHEEL......
many wind up using a 616 flywheel.... and many of those report a vibration which they never find the cause of....
Done
Schwungmasse Kupplung Mercedes G G-Modell G-Klasse 300GD OM617 460 461 flywheel | eBay

interzonearts 09-13-2014 05:25 PM
Quote:
Originally Posted by vstech (Post 3385099)
Simple answer is no.

Things that will improve mpg's have been offered. I'm sure there are more ways too.

Switch to the 85 torque converter will help performance.
Now, wouldn't a faster spooling turbo allow to get better torque at lower RPMs?
Lowering peak torque RPM would increase the MPG i imagine.

tjts1 09-13-2014 05:49 PM
Quote:
Originally Posted by interzonearts (Post 3385585)
Now, wouldn't a faster spooling turbo allow to get better torque at lower RPMs?
Lowering peak torque RPM would increase the MPG i imagine.
Ding ding ding ding ding!!!

We got a winner

winmutt 09-13-2014 07:21 PM
If he could stay out of the pedal sure.

benzdude42 09-14-2014 03:40 PM
I have like a 5 speed in the 300sd would suck. It feels so much bigger than my 300d.

ChrisArnt 09-14-2014 07:03 PM
According too many hyper-miling sites going with a lighter weight differential motor oil and synthetic transmission fluid will help.
There is a tire called ecopia that is supposed to give you a 1-2 mile gain.
Believe it or not, but mudflaps will actually improve aerodynamics and reduce drag.
.


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