Seeking CSL knowledge.

[glendog74]

I believe anything i am told... :whistle:

[Rutkowski]

100




You are a mentalist

yes. :whistle:

[shimmy]

100




You are a mentalist

[Rutkowski]

Hi,

I have always maintained on many posts
that to get much above 360 BHP on a S54
is really big money for maybe 20/30 BHP
if your really lucky.

People seem to forget that some of
these Race engine numbers are not
only 50k plus in parts, but they are around
1500/2000 Km in life.

Many stock S54's do not even make
320 BHP from the factory, and CSL's
are more like 330-340 than its claimed 360.

To get an alleged 360 BHP on standard Cam profile
with a better volume intake and N type map
is not living in the real world.

A N type map and a carbon box is not 40bhp on
a stock S54, well only if your selling them.

Dyno figures have so many variables that
there almost irrelevent.

4.1 Diff suits the engine rev band/ Gearbox ratios
a little better, but does not really make the car a lot quicker.

There's a Drexler diff in my CSL, while its very good for Track
its not really suited to everyday driving.


Regards,

The Gorilla.

My M3 made close to 340bhp proven with well over 100 dyno tests and over a course of 3 years. I added carbon airbox and a remap from Evolve. I believe the 360bhp power figure. :thumbs:

Another good power improver would be the 'Okada' stuff and power pulleys perhaps?

[shimmy]

Power pulleys :smokin:


Nuff said!

[The Gorilla]

Hi,

I have always maintained on many posts
that to get much above 360 BHP on a S54
is really big money for maybe 20/30 BHP
if your really lucky.

People seem to forget that some of
these Race engine numbers are not
only 50k plus in parts, but they are around
1500/2000 Km in life.

Many stock S54's do not even make
320 BHP from the factory, and CSL's
are more like 330-340 than its claimed 360.

To get an alleged 360 BHP on standard Cam profile
with a better volume intake and N type map
is not living in the real world.

A N type map and a carbon box is not 40bhp on
a stock S54, well only if your selling them.

Dyno figures have so many variables that
there almost irrelevent.

4.1 Diff suits the engine rev band/ Gearbox ratios
a little better, but does not really make the car a lot quicker.

There's a Drexler diff in my CSL, while its very good for Track
its not really suited to everyday driving.


Regards,

The Gorilla.

[Rutkowski]

Losing some weight is always a winner and this includes the driver. :thumbs:

I am begining to think that Carbon Airbox and 100cell cats are the only things worth doing to S54... anymore and it is a big £££ for a few BHP...

To make a better use of what you already have is to upgrade suspension and brakes... and Drexler LSD?

[The Gorilla]

Hi,

Quote-

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


Not sure I follow what your saying here.

You posted your concerns that your ECU was not making
fuel adaptions / trimming which would be required in
order to make real gains with the S54 Vanos optimised,
as in the CSL, and now your saying that even highly
tuned cars are not as fast as yours ?

While I believe that tunning the S54 to some of the alleged
numbers is cloud cuckoo land, its on par with saying that a
N type Map with a Carbon Airbox and nothing else produces
a S54 that is better than a CSL ?

Correct me if I am wrong, but that is what you are saying.

Where did BMW go so wrong, I mean all they had to do
to go racing themselves was take a stock S54, fit an
MK Carbon Airbox, a bastardised N Type Map, leave the stock
cams in there, not even optimise the Vanos, and hey presto they
have a winner !!

This is just pure Monkey business to a primate.

Regards,

The Gorilla.

[_Nathan_]

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

[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

[///Max]

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. :beer:

[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]

happy modding then max!! :thumbs: :supz:

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

[Rutkowski]

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.do?model=BL95&mospid=50641&btnr=11_3006&hg=11&fg=25

M3's valve train:

http://www.realoem.com/bmw/showparts.do?model=BL93&mospid=47714&btnr=11_3006&hg=11&fg=25

Thanks for the help. :thumbs:

Happy modding then Max!! :thumbs: :supz:

[///Max]

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.