So who has the most highly modified CSL?

[Mike R]

Originally Posted by alexk

Some searching wouldn't be bad.

Here is the list of differences CSL list
The list was compiled mainly by Tom aka NZ_M3 and some other members.

The engine differences.
- Engine block (supposedly picked from the least flawed cast) – The blocks have the same part numbers as M3, Z4, but the full short block is a different part number 11007833675
- Engine head (exhaust valve and intake/exhaust cams - longer duration, same lift) – intake cam shaft 11317835041 exhaust cam shaft 11317835043 Exhaust Valve 11347833676 (30,5/5,95mm) – the valve springs are exactly the same
- Intake plenum (carbon airbox as we like to call it) Air Collector 11617833496 filter 13727838625 The other half of the carbon box: 11617833497 and control unit 11617833498 all the other ducting 11617833646; 11617833645; 11617833648; 13717896774 intake grill 51117895883
- Extractors/Headers (same as post 2005 M3s and Z4) 11627833500; 11627833643
- Cat converter (200 cell) 18307833673
- X pipe, resonators (thinner material - slightly lighter) 18107833503
- Rear muffler - slightly lighter 18107833504
- Different ECU - 25% more capacity 12147837328; 12147834982
- Pseudo Alpha N engine management (delete of MAF, but still runs a MAP sensor, and air temp sensor 13621739510- debate as to whether this is just for idle control however) MAP sensor part number 13627833561

Again, I don't understand why you believe that you will achieve 400bhp with cams, remap and full exhaust. Even with increased compression ratio.
This is daydreaming (the BMW Motorsport engine makes this figure).
Tuners obviously will tweak the dyno parameters to show big gains.
With cams, remap, full exhaust system, you are looking at 10ish bhp from stock.

I found that just after posting LOL .

I didn't say I believed that 400bhp was achievable with those things, I said that if 384bhp was achievable, then I thought that with further tuning (porting and a c/r increase), then MAYBE nearly 400bhp is possible. However, if you're suggesting that the 384bhp is pure fiction, then obviously that doesn't bode so well .

I don't do tweaking of figures, any work carried out would be transparent and on an engine dyno.

However, I've got to find a car first .

[jibm]

John Thorn claimed close to 400 BHP for his n/a CSL...many many moons ago perhaps contact him??

Mods..please delete my account and membership on the register after this post....












Only kidding...

[AlexGTT]

Like most have said, save your money and concentrate on other areas of the car. There's far more speed in set up, suspension, lightness, etc. Throwing money at an already (relatively) maxed out and optimised engine is chucking good money after bad. It's only a 3.2 6 cyl. What is expected?

Loaded CSL is supercharged and fast but how many engines has it been through?

Fun and speed is not in a straight line, at least it isn't with a CSL/M3. You only have to look at what can be achieved with a std (mechanically) car, suspension, AP's (or similar), Cups, square wheel set up and geo by someone who knows what they are doing to see far more speed.

[shimmy]

Originally Posted by jibm

John Thorn claimed close to 400 BHP for his n/a CSL...many many moons ago perhaps contact him??

Mods..please delete my account and membership on the register after this post....



Only kidding...

As a site sponsor he can claim whatever he likes (phones off the hook to lawyers tomorrow!)

[chicken]

Actually mike, I know a guy who recently built a supercharged m3, making 530bhp, and its got everything, AP's, intrax, 2 set wheels, caged, harnesses, recaro's etc etc and he is selling because he bought a catamaran 500 or whatever

I did brands with him, it is rapid and handles well. Is this something you'd be interested in?
It was built by Simpsons so workmanship is tops

Also I have the magazine that has the 400bhp csl in it, only because I now own that car or sort of lol

Will upload some bits from it,

PS. HP doesn't make a car fast, just saying

[alexk]

Originally Posted by jibm

John Thorn claimed close to 400 BHP for his n/a CSL...many many moons ago perhaps contact him??

What was the series name ? "come tune with me" ?

No it was "come dine with me"

I asked a mate if he wants to write his S54 saga (crankshaft, conrods, pistons, compression ratio, porting, valves, valvetrain etc).


One more point here for our friends that have the steering wheel on the wrong side of the car.
RHD cars should produce less BHP (I can't give a figure, it would be complicated to test/quantify this) than LHD ones,
due to the difference in the rear exhaust manifold (cylinders 4-6).
RHD E36 M3s also had similar 'issue'.

[NZ_M3]

I've been following this thread with some interest but mainly because I can't quite understand the need and obsession you have over needing 400hp for the s54? Is it purely for bragging rights or are you just intent on running the very extreme of everything and are happy to deal with the compromises and consequences?

I hardly think a csl with 386hp vs 400hp makes that much of a difference on most circuits.

To use the analogy of Formula 1, if every F1 driver on the 2012 grid thought like you did they'd all want to drive for Mercedes Petronas AMG W03 (made most horsepower but didn't handle) rather than Redbull's RB8 ....

If you can drop the E46 chassis to 1100kg with cage and running gear and a spectacular handling package, i am fairly sure you'd be one if not the fastest CSL out there even with stock horse power.

[chicken]

Originally Posted by NZ_M3

I've been following this thread with some interest but mainly because I can't quite understanding the need and obsession you have over needing 400hp for the s54? Is it purely for bragging rights or are you just intent on running the very extreme of everything and are happy to deal with the compromises and consequences?

I hardly think a csl with 386hp vs 400hp makes that much of a difference on most circuits.

To use the analogy of Formula 1, if every F1 driver on the 2012 grid thought like you did they'd all want to drive for Mercedes Petronas AMG W03 (made most horsepower but didn't handle) rather than Redbull's RB8 ....

If you can drop the E46 chassis to 1100kg with cage and running gear and a spectacular handling package, i am fairly sure you'd be one if not the fastest CSL out there even with stock horse power.

Agreed!

While we're on the topic of weight, have any of you actually weighed your CSL's ? If so, how heavy?

[_Nathan_]

1100 would be going some I think.

Seb - mine was 1420 as a road car with 2/3rd tank fual, 1250-1260 no fuel last time I raced it with heater box, SMG and OEM loom, and I hope 1200 or less once build up from current state.

[AlexGTT]

Originally Posted by chicken

Agreed!

While we're on the topic of weight, have any of you actually weighed your CSL's ? If so, how heavy?

Yep, 1394kgs with 1/3 tank of fuel.