pee vee

what power would it be ok to go to,
IF you had +1mm pistons
or does it not make too much difference?

EDIT:
Questions further down now too

4x4 cosworth YB engine in mind here!!
thanks!

pee vee

anyone

Anonymous

I wouldnt fancy a crank on .75mm TBH

CossieRich

iTrader: (1)

Pee Vee,

Mate of mine had his engine on a .75 crank and Mark at MAD said he would not want to push more then 330 bhp through it and tbh neither would I.

pee vee

ok thanks guys!

what about the pistons? are the blocks still strong enough at +1mm
for say 400 -450? thanks!!

Anonymous

Yes they are, if its a nice new fresh block.

If its a really tired old block thats been fatigued for 150K though its obviously a TOTALLY different story and impossible to predict!


For 330bhp though, you can pretty much get away with anything it seems if its built right!

pee vee

thanks chip. will have to see what they say as re: crank damage and bores.

pee vee

right just been told it needs to go to .5 on the mains
and either polished or .25 on big ends (assume .25 for now)

is it a 'risk' going to 400 bhp with this crank??


any advice would be great thanks!!

pee vee

bumpski