P21253 pistons
Turbo Mini Forums

Hiya i bought these P21253+40 pistons before deciding to turbo my mini, now im not wanting massive insane power but will these be suitable at all for turbo use, can they be machined at all to lower the compression down or am i just waisting my time lol

I have 21253’s in my car dished out to 14cc.

Have ran them at 10psi with no issues. Lots of hard use to!

I think Nick on here put 20psi on his for quite a while. Eventually gave up.

awesome i thought i did see a post a while ago that you could use them and dish them out, it could have been one of your posts actually but no matter how much googling i did i found nothing on them, nice one anyway for clearing that up for me :)

bloody double post

Edited by DEXISWOLF on 31st Jan, 2018.

Yes Nick ran them for over 30,000 miles I think ? And 20+psi.
A far tougher piston than most would give them credit for.

Phil.

WWW.TURBO-MINI.COM

He wanted to run those pistons til distruction. And they held up with a lot of abuse

Hey chaps !

Just bought a set of these for my father's build however it seems that within the new box there isn't any mention of how much the clearance (or finished bore) should be. Do you guys have any idea of what it should be like ?

Edit: Any clue of how far these pistons will sit down from a std deck block ?

Thanks,
Carl

Edited by Barrieri on 22nd Oct, 2018.