S54 stroker kit

[flow]

Hi all ,

What are you toughts about this ?

http://store.vacmotorsports.com/vac-...-kit-p757.aspx

I'm looking for some more power and then i found the VAC stroker kit but there is not much info on the internet about this .
According to VAC motorsports they have a few race teams running the kit and the cars are running strong and without problems .

With good cams/tune/headwork/ compression ratio they claim numbers around 450bhp and 330 ft-lbs of torque .
That is not my goal anything above 400bhp would be great .

[_Nathan_]

Why stop at 3.4?

http://www.kohlerracing.se/page.php?...w_-_motordelar

3.7

[DuncanR]

Wonder if Murketts will still honour my BMW Warranty with that fitted !! ... sounds fun on the face of it ...

[flow]

Originally Posted by _Nathan_

Why stop at 3.4?

http://www.kohlerracing.se/page.php?...w_-_motordelar

3.7

I think 3.7 would be too much .
I want it still to be safe and reliable .

[shimmy]

Originally Posted by flow

I think 3.7 would be too much .
I want it still to be safe and reliable .

jeez, does this affect the bore as the HG is already 0.00000001mm thinck between cylinders anyway!

[_Nathan_]

Think 3.4 is effectively just a crank change as bore remains the same?

[The Gorilla]

Hi,

Is this for a road biased Car or
a Car that does a lot of Track
work ?

I would go and drive a stroked
S54 before you do anything else.

Regards,

The Gorilla.

[shane@mbtech]

Originally Posted by shimmy

jeez, does this affect the bore as the HG is already 0.00000001mm thinck between cylinders anyway!

Usually done on the stroke shim, as per the terminonlogy, the stroke becomes bigger which in turn uses more of the cylinder. Thus increasing cylinder capacity.

Different crank, pistons and rods used.

Rebore is different, using same size rods, but bigger pistons, same size crank etc, thus creating more cylinder space, some engines, such as the M3 will not accomodate a rebore due to size.

I did consider a full build and stroker before selling the CSL, but if I do it it would be on normal M3.


@Gorilla

What do they drive like? Good on track but shit on road?

I must admit N/A 450 bhp in an M3 sounds good.

[shimmy]

Originally Posted by lawsy

I did consider a full build and stroker before selling the CSL, but if I do it it would be on normal M3.


I must admit N/A 450 bhp in an M3 sounds good.

I guess good thing is that you only have mainly engine mods to do, not other bits and bobs like you get on a charger engine or transplan of V10 or V8

Just need a donor engine that has some like left in it?

[northernjim]

Would increasing the stroke not limit the top end revs?