Oppinion is needed. S38-B36 vs S38 B38. Thanks - The Unofficial BMW M5 Messageboard (m5board.com)

First e28 M5 · 6th June 2009, 10:40

Hi S38 mates,

I am building a S38 B38 into E30 M3...

My only question is:

If I fit 3.6 Single Flywheel/cluch and replace the original Dual Mass Flywheel from the 3.8, am I going to damage something on the engine, crank shaft ? Or this dual mass fly wheel is made for more comfort driving to eliminate vibrations?

The reason I want to upgrade is because I have read some 3.6 owners did upgrade and they are saying that the Engine is reving much faster than Dual mass fly wheel.

I only wander if I do this change will I cause damage on the Cranck Shaft, Engine?

Thanks
Anri

pspassos · 6th June 2009, 16:07

no damage at all my friend..... its just for confort....

Dragonsi · 6th June 2009, 23:20

Pics!

Ferrari-Bmw · 7th June 2009, 17:08

Hi,,

lovly engine choice,,

BUT :::::: i guess that B38 is the engine that is more rare than any other
S- engine in the STATES ??

Or am i wrong

First e28 M5 · 7th June 2009, 17:34

Yes if you guys see the car my German friend destroyed you will claim me as a Criminal (Avus Blue 94 car never been in any tip of accident ).

Yes S38-B38 is RARE engine hear in US and not to mention in E30 M3 car.
Never done it so far..
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Back to my post. I need more opinions for my Question. Thanks to "pspassos" for the reply!

Anri

Ferrari-Bmw · 7th June 2009, 17:42

Frank Fahay did a B36 conversion in a white E30 M3 some years ago,,

he said,, that it was a unbeliveble more complexed vs S50

I would contact him if i was you

Frank Fahey Motorsports Home

He have a wonderful M1 by himself

truly a stunning car

First e28 M5 · 7th June 2009, 18:00

Yes I know his car and his work. I am not impressed from his project its not done right! ! ! Yes he has lovely E26 M1 car.

LET'S NOT DESTROY WHIT OFF TOPIC MY ORIGINAL POST FOR THE S38-B38 CLUTCH QUESTION LIKE THE OTHER I HAD PLEASE !

Anri

MM-5 · 7th June 2009, 18:22

Hi Anri!

I have done this modification to S38B38. I have 3.6 single mass flywheel and Sachs SRE clutchkit. I can recommend this modification. There is weight reduction in total weight and more importantly in rotational weight. Engine revs more freely and no problems with gearbox noise with this flywheel. Some lighter flywheels can cause gearbox noises.

EDIT: Remember to change the 3.6 flywheel bolts too when doing this change. They are different lenght.

Best Regards, Janne.

First e28 M5 · 7th June 2009, 18:47

Thanks MM-5,
I appreciate your reply and experience. If I am not mistaking my self S38-B35 E28 M5- E24 M6 the whole clutch/plate is the same as S38 B36 3.6 ???

I will get the same setting as yours.

Thanks
Anri