S4 crank and big end bearing question

[kies4]

Does the S4 share the bottom end with the RS4 ?

Is it worth up grading the bearings when running around 450 bhp ?



any help would be appreciated

[S2tuner]

The crank, rods, bearings and the block is different and so are the heads and the pistons... it's 2 different engines... I'd recommend a set of RS4 rod bearings at least, I'm not sure if the RS4 crank bearings actually fit...

HTH,

Mihnea

PS: watch your phone, it's gonna start ringing soon

[kies4]

cheers

[Golich]

Mihnea is right you can read about this in, "The power of the RS4" article available in the downloads section of this site.

[S2tuner]

Oops, my bad, after checking ETKA, it seems that the rod bearings are identically the same between the S4 and RS4 engines... everything else remains as I've said though...

HTH,

Mihnea

[kies4]

thats good they're £300 a set