forged pistons

Post Sat Jul 25, 2009 9:22 pm

can anyone recomend what forged pistons will fit m42 for turbo use?(standard bore).

Post Sat Jul 25, 2009 9:25 pm

Moving to the F.I section

Post Sat Jul 25, 2009 9:36 pm

tryin a diy to save ££.who knows where it might lead.

Post Sat Jul 25, 2009 9:45 pm

It save cash you could get the existing pistons skimmed to lower the CR. This will be a hell of a lot cheaper than forged pistons. How much power you aiming for?

Post Sat Jul 25, 2009 9:48 pm

250/300ish.will stock pistons take it

Post Sat Jul 25, 2009 9:53 pm

You should be able to see 250bhp on stock pistons without lowering the CR as long as it's mapped properly. Anything over about 280bhp starts to get pricey from what I've seen from boosted M42s.

Post Sat Jul 25, 2009 9:59 pm

pricey in what way?

Post Sat Jul 25, 2009 11:02 pm

bonnacab wrote:can anyone recomend what forged pistons will fit m42 for turbo use?(standard bore).

Have you researched Mahle/JE/Accralite/Wiseco/Cosworth

All of them can/will make them to your specifications,although there will normally be a minimum number required before they'll make a batch.

Try here for an off the shelf set of Low comp ones
http://www.vacmotorsports.com/catalog/m ... 851-cr.htm

They also do ones at 10:1 and 13:1CR for NA builds

Post Sun Jul 26, 2009 1:20 am

Try m40 pistons lower comp

Jason

Post Sun Jul 26, 2009 12:21 pm

are the rods the same?or do i use m40 pistons with m42 rods.