[BMWCSRegistry] An ADDITIONAL esoteric question for the Cognisenti

[Richard Conway]

David and all:

For decades, I ran 450 twin turbo horsepower in my CSL through both a CR 5
speed and an OD 5 speed tranny before the M5 was introduced and well before
M5 parts were available. Nary a problem after 100,000 very fun road and
track miles.

F.Y.I.  With the turbo, the OD was the only answer however, with M5 power,
I'd stay with the CR unless you do a lot of highway miles, then I'd go with
a lower ratio diff and the OD. Of course if I would have had M5 driveline
parts available at the time, I would probably have gone that route, but they
weren't and I didn't and had no problems and lots of fun. One reoccurring
problem though.  The guibo self-destructed every 20,000 miles or so.

Richard Conway



On 7/17/07 2:04 AM, "David Dart" <davidd at nevicdgp.org.au> wrote:

> 
> Forgive this question as it is not specifically Coupe related in the true
> sense. 
> 
> I know there are some on the register with M5s. I have the chance to buy a
> M5 engine which I am thinking of doing for my 635. The question is will the
> existing gearbox take the power?
> I know the M5 had a larger 5 speed overdrive box than I have at the moment
> in 635 but will the existing box take it. I also have a 5 speed close ratio
> dog leg gearbox if that would be better - although I have heard they are not
> as strong as we would like.
> 
> If it helps digest this question I still have my CS. (phew!)
> 
> Any comments welcome.
> 
> David.
> 
> _______________________________________________
> Please edit the length of replies
> BMWCSRegistry mailing list
> BMWCSRegistry at idb.ded.forest.net
> http://idb.ded.forest.net/mailman/listinfo/bmwcsregistry