are he cranks on a ps1 172

[ben_p]

same as the mrk2 172/182/cup etc?


does the williams use the same one?

 

[ben_p]

oi oi

 

[TheJesus]

no idea on first question, but pretty sure the Williams uses a completely different crank, as it's the limiting factor in why the Williams wont rev, where as I understand the 172 crank is good for 8300rpm of fun

 

[RichMcc]

Think the bottom end is more or less identical its the heads that are different.
With ballanced and lighter rods and pistons the f4r can rev stupidly high

 

[edde]

The Mk2 all use the same ones I believe. Why do youneed to chnage?

Williams as said is different.

 

[ben_p]

i dont but with the engine im having. i want to balence the crank and fly. but need them doing at the same time