florent78

iTrader: (1)

Hi guys

I'm doing a full rebuild on my engine


I need to get new set of pistons (rebore)

so it seems currently I can only get the wossner one (forged)

or the mahle / semi forged / like original so I need to get those pistons modified for high lift valve


appear of wossner ? today can I get an other set of pistons ?

best quality required


thanks for your help

Adam-M

What size over-bore do you require?

I believe CP Pistons to be of the best quality but maybe overkill depending on your power? Cosworth pistons are good aswell if they are still available, I run Accralites from burton power I think they are a copy of Cosworth pistons not sure.

bigdel

I have Wossner pistons in mine. Apart from being a bit noisy when cold, they seem fine.

Depends on your budget. Start going for CP etc, then prices do start to climb quite rapidly

florent78

iTrader: (1)

well I will say it's the first size "overbore"

accralite are only 7.5 compression ratio ?


where can you buy the CP Pistons ?

thanks

bigdel

http://www.performanceunlimited.co.u...ds/cp-pistons/

My son's had SuperTech pistons fitted into his forged Focus RS engine, they might be worth a look too

florent78

iTrader: (1)

thanks guys (I do a request for CP pistons)


regarding lot's of posts it seems the mahle one are good for 500HP

I'm looking for 380 / 420 really maximum HP


is it true

or it's better to go on wossner or CP pistons when you rebuild the engine

you can get mahle with valve cut off too

Loomer

Mahle are fine for that sort of power, they are what i would be using.

cossynut2

I have had the Mahle pistons with valve cut outs in my low comp 450bhp 2wd Saff for a long time with no problems at all.

florent78

iTrader: (1)

I think it's the "best solution"


low compression ?

what ratio did you get ?
7.8 ?

Adam-M

7:5:1 ratio will only be the case if your on standard head height, block height, head gasket thickness ect ect.

Standard mahles are good

florent78

iTrader: (1)

Hi again guys

no mahle available in France so 2 choices:
brutonpower (available)
or Brands Hatch Performance
1- BHP could be good cause this company do the cut off but ... I don't know them and don't know if they are serious or not

2- burtonpower sells Accralite and Mahle and price is similar
it seems mahle brand is better than Accralite
correct ?


last question ... I start to calculated the compression ratio and I do not have the piston

what is the "standard" deck value for Mahle pistons ?

thanks

Adam-M

I wouldn't say Mahle's where better no, accralite are proper forged and manufactured to very high modern standards where as the mahles are old and high pressure cast, both good pistons though.

I have only used BHP for small purchases and haven't had any issues on them.

Loomer

Contact Paul at PJ Motorsport, he will do you a good deal on Mahle.

Mark Shead

For me only use mahle or cp pistons. Up to 450hp mahle the best ones over that cp are the best.

Mark