So who has the most highly modified CSL?

[AlexGTT]

Excellent Mike. Look forward to seeing the results and meeting you at the odd TD.

[_Nathan_]

Likewise looking forward to seeing the results.

[Hazy]

Interesting thread, its surprising what you can do with a CSL or M3 in my case, I went from a road car with a cage to a proper monster in 3 years. Regarding engines, I've had proper heartache before finally getting the right mix of power/torque and reliability. I sometime wish I had retained the Vanos as my car could be more punchy low down, but the lack of weight (1120kg dry) more than makes up for it.

[Mike R]

Hazy,
Regarding the engine - spill then . What is the right compromise ?

[Hazy]

Originally Posted by Mike Rainbird

Hazy,
Regarding the engine - spill then . What is the right compromise ?

It is possible to get prob 430bhp from the S54, but it will be a proper screamer, hard to race and impossible to drive on the road.

My engine is about 412bhp, "green" crank (basically BMW motorsport crank) crank knife edged and balanced with some sort of special ceramic shells, huge injectors, steel rods, JE forged pistons, schrick cams (405 and 390 I think), shrick followers, de-vanosed, fully gas flowed, modified inlet manifold MBE engine management (cheap TBH) the list goes on....

The work on the crank makes the engine spin up beautifully, but the lack of weight in the crank does sap some torque as does the lightweight flywheel, but again the lack of weight in the car compensates.

The guy who built my car runs a stroker in his car and its an absolute peach of an engine, but unbelieveably expensive. I think it was running something like 447bhp with something like 350ftlb torque!

[Mike R]

Originally Posted by Hazy

It is possible to get prob 430bhp from the S54, but it will be a proper screamer, hard to race and impossible to drive on the road.

My engine is about 412bhp, "green" crank (basically BMW motorsport crank) crank knife edged and balanced with some sort of special ceramic shells, huge injectors, steel rods, JE forged pistons, schrick cams (405 and 390 I think), shrick followers, de-vanosed, fully gas flowed, modified inlet manifold MBE engine management (cheap TBH) the list goes on....

The work on the crank makes the engine spin up beautifully, but the lack of weight in the crank does sap some torque as does the lightweight flywheel, but again the lack of weight in the car compensates.

The guy who built my car runs a stroker in his car and its an absolute peach of an engine, but unbelieveably expensive. I think it was running something like 447bhp with something like 350ftlb torque!

Tell us more about the stroker engine, as that is what I was thinking along the lines of to make the power reliably and less peaky .

[Hazy]

Originally Posted by Mike Rainbird

Tell us more about the stroker engine, as that is what I was thinking along the lines of to make the power reliably and less peaky .

http://store.vacmotorsports.com/copy...kit-p2929.aspx

This is just the start though! You will need aftermarket ECU, cams, headwork, custom injectors, the list goes on!!

However having driven Kevin Clarkes title winning M3 back to back with my car the difference is night and day, and the engine would be at home in a race or road car. I left an E92 racecar for dead on the main straight at the nurburgring in it last year

[ando]

HI Hazy

I was following you round Silverstone last sunday, I was behind you through Brooklands and Luffield and wishing I had as much front end grip as you did, as you were pulling away and I was understeering! lol.

Nice looking car that is mate.

Cheers

Ando

Originally Posted by Hazy

Interesting thread, its surprising what you can do with a CSL or M3 in my case, I went from a road car with a cage to a proper monster in 3 years. Regarding engines, I've had proper heartache before finally getting the right mix of power/torque and reliability. I sometime wish I had retained the Vanos as my car could be more punchy low down, but the lack of weight (1120kg dry) more than makes up for it.

[Mike R]

What did the stroker engine rev like, as the rod angle ratio goes from 1.56 to 1.43? Does it make it more coarse at the top end? What I really want to know is, did it still feel like an OE engine in nature and driveability / NVH?

[shane@mbtech]

Originally Posted by Mike Rainbird

What did the stroker engine rev like, as the rod angle ratio goes from 1.56 to 1.43? Does it make it more coarse at the top end? What I really want to know is, did it still feel like an OE engine in nature and driveability / NVH?

Hazy engine builder is Wayne Gibson
I did give the details on one of the first pages. Give him a bell mike.