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Home > Help Needed / General Tech Chat > N/A pistons for turbo applications.

Richie

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a LIL fishing village on the coast - Newcastle Upon Tyne

ok while my quest continues ie saving up for some nice pistons (IT 8NT GONNA HAPPEN), i have 4 or 5 built n/a blocks lying around all in good nick. can these be used safely with a turbo ? what is max boost that can be safely run, with turbo head using 28cc chambers and a 4wd cosworth intercooler. and what is the average CR when using N/A pistons ?

Cheers dudes :) i just feel that this year of my build has been wasted all i have achieved this year is to strip down the donor car and build the running gear into my modded turbo shell, and put a roll cage system in. the car still looks as it did when i got it, except the removable front end is all done. i really want this project done by march 07, and the fiasco trying to get rings for me pistons has ended in heart ache wallett ache and a kick in my testicles. the car still needs painting too, which is where my budget is going, hence the question on N/A pistons........

Iam just despo to get her on the road, she needs an mot and a trip to the DVLA along with export cert etc etc so i can make her fully fledged !


sorry to be on a downer am just gutted my car is still sat there collecting kids toys on the roof, paint pots ladders, offcuts of carpet etc etc

Edited by Richie on 20th Dec, 2006.



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MikeRace, Mini13

On 17th Aug, 2009 Jay#2 said:
I doubt I'll be dipping into the 13's like you did though!






Nick
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Midlands

i've been using N/A pistons in mine for 2 years, mine are the 21253's with 11cc machined into em. I think Nic was running them before he went all bling aswell *wink*

I was running 8:1cr and up to 15psi but just 10psi day to day cos i can't afford fancy pistons either.

this is how they look after 2yrs abuse anyway:

On 20th Oct, 2015 Tom Fenton said:

Well here is the news, you are not welcome here, FUCK OFF.


Vegard

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I pick holes in everything..

Chief ancient post excavator

Norway

Omegas for instance are totally similar when it comes to turbo or N/A. The only difference is the size of the dish.

Don't worry about this. Just get some sold skirt pistons with oil holes and no slots.

On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem.



Turbo Shed

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Epsom, Surrey

i'm with Vegard on this one.

full skirt pistons with oil holes not slots.


robert

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uranus

i think another thing that deff comes into it is heat soak , if you can keep on the throttle for a few mins at max boost without backing off ,thats quite likely to melt something , but the likelyhood of that is rare , so the typical on off type usage a high boost mini gets gives a window of usage you wouldnt have if it was a heavy car with a greater need for long on throttle situations .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM


Richie

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a LIL fishing village on the coast - Newcastle Upon Tyne

well i will give it a go :) will get some new rings for em and use em with me phase 2 etc. cheers for the replies guys.

Richie



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MikeRace, Mini13

On 17th Aug, 2009 Jay#2 said:
I doubt I'll be dipping into the 13's like you did though!






Nic

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First mini turbo to get in the 12's & site perv

Herefordshire

On 20th of Dec, 2006 at 02:02pm bud666 said:
I think Nic was running them before he went all bling aswell


yeah i was (i only changed them due to an unfortunate incident that allowed me a cheap upgrade), i ran 16psi on them, accidently ran 22psi once

id pop them in and get it running, im sure you'll be ok on them

once you get it all ok, if your feeling really keen and flush then you could upgrade to some other 'bling' jobbies


Richie

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a LIL fishing village on the coast - Newcastle Upon Tyne

had a look at em today, i have a clean set on rods, i have just had me crank pollished and have new shells etc etc. I am right in thinking i can use the rods with the pistons and just put em in with me new shells, or will i need to use the origional rods from me turbo ? they are both the same component ?



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MikeRace, Mini13

On 17th Aug, 2009 Jay#2 said:
I doubt I'll be dipping into the 13's like you did though!






Joe C

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Carlos Fandango

Burnham-on-Crouch, Essex

the 73.5mm powermax's look like they might be good, the top ring is a good way down.

On 28th Aug, 2011 Kean said:
At the risk of being sigged...

Joe, do you have a photo of your tool?



http://www.turbominis.co.uk/forums/index.p...9064&lastpost=1

https://joe1977.imgbb.com/



Richie

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a LIL fishing village on the coast - Newcastle Upon Tyne

its still alot of money bud :) i got some s rods jacked up and a strked GT crank, but iam saving that back for the mega build. i just want to get me car done, all me moolar is going into painting it.



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MikeRace, Mini13

On 17th Aug, 2009 Jay#2 said:
I doubt I'll be dipping into the 13's like you did though!





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