1293 low comp pistons
Turbo Mini Forums

after speaking to benross, he recommend omega pistons, but i am on a bit of a budget to get the engine ready for l2b,

i have seen the minispares mega pistons, but believe you need morspeed to dish them to 10cc ?

just browsing the morspeed weebsite, and seen these advertised

TURBO 21253 13cc piston set +20-40-60


£185.00

this is the only info on the website, anyone know anything about them, new to this. but 13cc is going to give a bloody low comp with a benross head, but sure he could sort me out..

recomendations please, and most appriciated

Gaz

hi gary, FIRSTLEY you will be waiting 3 years ....... if ....... You ever get them from morspeed as this guy has Fooked many people off on here
i thought i would mention it before you go down the tubes like the rest of them ...... well its so true! gents.

get the cast Omegas at £280 including delivery 10cc dish yes i know it hurts this togeather with 28cc in the head will give you 8.4:1 cr

http://www.med-engineering.co.uk/product_d...62&vlang_id=106

other wise a good member on here may well dish the megas out for you for a few sheckels if you want to place a post !

but in my oppinion please go for the Omegas there well proven in race turbo application.....enough said

Ben, what kinda boost do they take or power? found on the site a kit can take 15psi.. I assume that?

Lightweight racer coming soon.

so, a 10cc dish will suffice for decent boost? Does that apply to 1380cc pistons too, or does the ratio change? I've got a Longman GT15 head to play with here; will measure cc shortly. I've been looking at decompression plates, but would rather do it properly and gain some cubic capacity in the process:)

1963 Cooper
1975 Pick Up

The size of the dish in the pston dosnt really determine the amount of boost that you can run, it just a major factor.

its (together with the quality of the components) the compression ratio (CR) that you need to pay attention to.

a CR of around 8.5:1 is what is seen as acceptable for high boost engines.

your compression ratio is determined by your piston dish, combustion chamber, ring lands, head gasket (i have probably missed a couple of minor ones)

so you can see its not neccesarily a 10cc piston thats good for high boost as a low dish piston will just mean moe to be taken out of the head, and a deeper dish piston will mean less to be taken out of the head.

Hope That Helps.

Thanks James:)

1963 Cooper
1975 Pick Up

WWW.TURBO-MINI.COM

All i can say is NEVER use a decompression plate they are a waste of time and money...... I learned the hard way.....

That mini is determined to Kill me!!!!

What happened just so I can show my dad this post, as we're in arguement over using it. He recon's it's fine but I've explained everything that gets affected.

http://photobucket.com/quintonrose