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jesseT18
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Castle Hill, Sydney
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February 2004
7psi into 10:1 cast pistons? Sun, 03 April 2005 12:45 Go to next message
if i was to wack a sc12 onto my 2tg hybrid along with some efi gear a programmable ecu and a nice little cooler with some fine tuning, would it take it? or shes going to blow?

just want to consider my options, cause im looking into efi and im not going to bother unless shes going to take some boost further down the track.

another thing worth noteing is that its got ACL pistons, dont know how these compare in strength to standard 3tgte pistons

[Updated on: Sun, 03 April 2005 12:59]

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jesseT18
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Re: 7psi into 10:1 cast pistons? Sun, 03 April 2005 12:53 Go to previous messageGo to next message
according to some calculations...

10:1 comp on 7psi is equivelant to
3tgte (7.8:1 comp) on 14psi

can a stock 3tgte take that?

winding the sc down is another option by using a larger sc pulley maybe...
or going with a 3tgte exhuast manifold and turbo and winding the boost down nice and low

[Updated on: Sun, 03 April 2005 13:02]

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THE WITZL
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July 2002
 
Re: 7psi into 10:1 cast pistons? Mon, 04 April 2005 06:21 Go to previous messageGo to next message
with good tuning in think it would take it.

but i really dont have much love for the ACL cast pistons, dont know why....i just dont.

I think a turbo would be the cheaper option here, because there would be less mucking around with making mounts and pulleys and belts for the SC....

Or you can bum all of that and go for a 4a....

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toof
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July 2003
 
Re: 7psi into 10:1 cast pistons? Mon, 04 April 2005 06:35 Go to previous messageGo to next message
possibly get your hands on a metal head gasket that is say 1-1.5mm to take a bit of the compression out of it ? realistically face it you may say 7psi but if youve got the option for more inevitably youll do it Smile so perhaps dropping the compression a shade wont hurt... ? should also add a bit more wiggle room for error in your tuning... ?
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jesseT18
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Re: 7psi into 10:1 cast pistons? Mon, 04 April 2005 11:50 Go to previous messageGo to next message
yeah i think a 3tgte turbo manifold and ct20 would do nicely, ide probably be happy with 5psi.
metal heagasket would definately be used
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Norbie
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May 2002
Re: 7psi into 10:1 cast pistons? Mon, 04 April 2005 23:48 Go to previous message
jesseT18 wrote on Mon, 04 April 2005 21:50

ide probably be happy with 5psi.

You will be... for about a week. Trust me, the urge to crank the boost up will hit you very soon, and then you're stuck with a p00 CT20. I'd recommend getting a half-decent turbo to begin with, eg CT26.
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