Seeking CSL knowledge.

[///Max]

Originally Posted by Rutkowski

As far as i know it's only the exhaust valves that are different. It's best to check realoem.com then.

Will do. Thank you sir.

[///Max]

Originally Posted by Rutkowski

As far as i know it's only the exhaust valves that are different. It's best to check realoem.com then.

You are correct. The exhaust valves are different but the intake valves are the same according to realoem.com. Refer to parts 6 and 7.

CSL's valve train:
http://www.realoem.com/bmw/showparts...06&hg=11&fg=25

M3's valve train:
http://www.realoem.com/bmw/showparts...06&hg=11&fg=25

Thanks for the help.

[double_r]

Originally Posted by ///Max

You are correct. The exhaust valves are different but the intake valves are the same according to realoem.com. Refer to parts 6 and 7.

CSL's valve train:
http://www.realoem.com/bmw/showparts...06&hg=11&fg=25

M3's valve train:
http://www.realoem.com/bmw/showparts...06&hg=11&fg=25

Thanks for the help.

Sorry Max, I got the info mixed up between which valves were different

[///Max]

Originally Posted by double_r

Sorry Max, I got the info mixed up between which valves were different

No need to apologize, brother. I know you were trying to help me out. It's all good.

[Rutkowski]

Originally Posted by ///Max

You are correct. The exhaust valves are different but the intake valves are the same according to realoem.com. Refer to parts 6 and 7.

CSL's valve train:
http://www.realoem.com/bmw/showparts...06&hg=11&fg=25

M3's valve train:
http://www.realoem.com/bmw/showparts...06&hg=11&fg=25

Thanks for the help.

Happy modding then Max!!

[///Max]

Originally Posted by rutkowski

happy modding then max!!

Yes sir! Don't mind if I do. And with this post I'm officially Mode S1 - Starting Out.

[The Gorilla]

Hi,

I would not bother with the CSL Exhaust valves.

So long as your existing S54 Exhaust Valves are in
good condition, I would have them triple cut and the
results would be the same if not better.

The CSL Exhaust valves were 'optimised' ie cut/shaped
to allow better exhaust flow for the slightly longer
duration CSL Cams.

Rather than the CSL Cams why not go for Schrick Cams
at 288/280 with the 1mm longer duration which would
allow the retention of the Vanos, set of solid lifters, nice
set of uprated valves springs to stop valve float, with
well matched Titanium Retainers to lighten up the valve
train and see a true real world 360 BHP + rather than
all these mythical Dyno ones.

Downside is you have to add about another
7/8000 USD to your project build.

Regards,

The Gorilla.

[///Max]

Originally Posted by The Gorilla

Hi,

I would not bother with the CSL Exhaust valves.

So long as your existing S54 Exhaust Valves are in
good condition, I would have them triple cut and the
results would be the same if not better.

The CSL Exhaust valves were 'optimised' ie cut/shaped
to allow better exhaust flow for the slightly longer
duration CSL Cams.

Rather than the CSL Cams why not go for Schrick Cams
at 288/280 with the 1mm longer duration which would
allow the retention of the Vanos, set of solid lifters, nice
set of uprated valves springs to stop valve float, with
well matched Titanium Retainers to lighten up the valve
train and see a true real world 360 BHP + rather than
all these mythical Dyno ones.

Downside is you have to add about another
7/8000 USD to your project build.

Regards,

The Gorilla.

Hmmm, very interesting. I will definitaley put this into consideration and have a look into it. Thanks for the advice.

[EVANGELOS]

my 2 cents after literally 100ths of straight line "races" is that as far as power is concerned there is NO WAY to gain a significant amount of power from the s54 ...

of course many so called tuners may claim hp gains on the dyno ... but on the road you would probably go even slower than stock !!!

we have checked nearly ALL available n/a methods from nearly ALL "tuners" ...

lately we have even checked a heavily modified s54 with higher compression , pistons , numerous Schrick camshafts (from 288 up to 304) , Schrick retainers , strengthened valve spinrgs , csl airbox etc ...

the results is that even that will go head to head with mine which is just an "alpha-n" with an MK airbox and 1460 kg ...

as for csl's in my current "specs" I must say that I am quite faster ... on a straight line that is !!!

the only modification that I would suggest for a "regular" M3 after all that testing for the last 3 years is

shedding weight , a shorter final diff and a lightweight flywheel ... the "alpha-n" conversion and a higher rev limiter is of course not a bad idea as well

[_Nathan_]

Kms get good power out of them, 420bhp NA, problem is the warranty / rebuild interval is measured in hours.