Have i made a mistake?
Turbo Mini Forums

Bought some 10cc die-cast pistons from MED a while back now, on their site and on the phone they reccomended them too me for forced induction use when i told them what they will be used for.

But my question is, is the cc of these pistons large enough? As i dont remember hearing of any of you running 10cc pistons but mostly bigger like 15cc etc. The guy who did the machining on my block said that he skimmed the block so that the pistons are as close to the surface as possible which is what you need on turbo engines, im not sure what this means but he knew what he was doing so i let him get on with it.

I am going to be running a avonbar phase 2 cam, 10-15psi of boostage and eventually some sort of fully modded head. So would the pistons be ok for this? Any info/tips/advice would be great.

Cheers, Rich

you will still be able to get the compresion ratio down enough with the 10cc pistons,

a chamber of 28cc will give about 8.8:1 so bear this in mind when looking for a head.

dunno about the strength though, i'm not familiar with MED's stuff.

Edited by Joe C on 21st Aug, 2006.

MED = Omega

Edited by Sprocket on 21st Aug, 2006.

Yeah sorry theyre Omega pistons sold to me by MED

Thats relieveing news, i suppose any decent head modifyers would ask me the spec of everything else on my engine to get the correctly spec'd head wouldnt they. I just ondered weather it was do-able to get the CR down to a safe level with 10cc pistons so thanks for that!

i think most places do heads of around 28cc for turbo motors,

also Vmax can do up to around 35cc!! chambers.

Blimey! Well as long as i havnt screwed myself over getting the wrong pistons, thanks for the info mate!

omega pistons are well up to the job for turbo charging

if you are going the 1380 route??

then 10cc dish is not big enough to be honest!

use the accralite forged 18cc dish pistons from AVONBAR

a shade expensive but..... these are just the best!

I think Benross was thinking as if the rich1275 were going the 1380 route.

But i agree with you Dan, it is easy to find a suitable CR with 10cc dished pistons.

I ran them for years from MED(omegas) with no worries, boosting up to a Bar on a 8.5:1 CR.

Rich, maybe you should shed a bit more light on your chosen spec, intercooler? head cc?

It is all about CR realy, only when you want the ultimate engine have you got to get realy choosey.

JF.

sumpmut john is eccohing my thoughts

ultimate motor and all that

i may have been a shade one sided with biasing

"my thoughts"

towards the 1380 cc displacements motors

but its true which you state!

well Mr Avonbar is not giving me any discount at all DAN
the reason i plug him from time to time because!............

Mr AVONBAR leads the way IMO for our Turbo Charged engines
and has done so for many years

NO! bull, excellent products and advice comes for free!
it would be a duller world for us if say .......... ian whent defunkt through us not supporting him .......

not as though he is mind you !

my moneys with him most times

the phase 2 cam he engineered the accralite pistons he comissioned ................ this is just to name a few !!!!!!!

Edited by BENROSS on 22nd Aug, 2006.

Benross they are +020 pistons for my 1293cc rebore!
The rest of the spec is the phase 2 camshaft, obiously those pistons for the 1293 bore, not sure how much the block has had off the face but the guy said he machined it to bring the pistons as close to the face as he could for some reason. Eventually after a while i will do 3 things at the same time, get an intercooler, raise the boost to go from 10-15psi and have a suited avonbar cylinder head to get the compression ratio needed. Im not sure what cc cylinder head i should go for as i dont know what CR i should aim for hehe.

Tie up with mr avonbar on that one rich

ask for Ian

Thanks for the help yet again mate.