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04-06 Ralliart Engine/Drivetrain (no forced induction)

High comp pistons

Old Oct 27, 2006 | 10:21 AM
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High comp pistons

has anyone bothers to ask RRM if there forged pistons sence they are made to order if they can make them in to a high compression kit for our cars??
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Old Oct 27, 2006 | 01:03 PM
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thats pretty much what made to order means. however, you dont want to go past 10.5:1 pistons because then you have to worry about the ecu not being very friendly with the change.
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Old Oct 27, 2006 | 03:17 PM
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how many psi can you push if you get the RRM pistons and the RRM turbo kit?
it would also be sweet if they sold a stroker crankshaft for the Ralliart, make it like a 2.8L or maybe even a 3.0L. 3.0L Turbo Ralliart OMG that would just be nasty.
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Old Oct 27, 2006 | 03:54 PM
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There really isn't any more room in the 4G69 to increase the displacement, as it's already stroked out compared to the other engines in the series.

I'm sure you could find high-compression pistons that are already available. Figure out what past mitsu's used the same stock pistons (look at past non-turbo eclipses) then look for high-compression replacements.
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Old Oct 27, 2006 | 04:02 PM
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Originally Posted by otter
There really isn't any more room in the 4G69 to increase the displacement, as it's already stroked out compared to the other engines in the series.

I'm sure you could find high-compression pistons that are already available. Figure out what past mitsu's used the same stock pistons (look at past non-turbo eclipses) then look for high-compression replacements.

look up 2.6 dodge i cant remember the name of the car, but its like an 89. they have the same stroke and diameter as our motors.
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Old Oct 27, 2006 | 05:18 PM
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im talking a 13:1 with a stand alone fully bilt not to be messed with lol...
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Old Oct 27, 2006 | 09:58 PM
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Originally Posted by RalliDew
im talking a 13:1 with a stand alone fully bilt not to be messed with lol...
youd be the first to have one? go with it. you can do anything to anything as long as you have the cash.
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Old Oct 28, 2006 | 03:37 PM
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i guess ill have to call them about seeing if they can make them.
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Old Jun 28, 2010 | 10:21 PM
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alright ralliart dew ........i would love to go on with 13.1 toooooooooo but sadly it's hard 2 find !!!! i've found out lately that WISECO Pistons makes BOTH FOrged & HIgh COmp pistons
forged are 8.5.1
high are 10.5 !!!!!!!!!
i really want higher & i'll fully Megasquirt my RA !
what about the 2.6 dodge's Pistons ?? any info yet ???
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Old Jun 29, 2010 | 08:07 AM
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Bringing back a dead thread, lol
I have the wiseco 10.5:1 pistons, I will let you know how it runs when I get the car back in one piece.
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Old Jun 30, 2010 | 12:42 PM
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SSP has 14:1 last I heard, in the 12s with them... He should be moving on up from then though.
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Old Jun 30, 2010 | 01:44 PM
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I dont think SSP is selling those, I had emailed him awhile back.
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Old Jun 30, 2010 | 01:47 PM
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Such high compression pistons would be sick! So much potential.
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Old Jun 30, 2010 | 02:28 PM
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Originally Posted by blaire
Such high compression pistons would be sick! So much potential.
Yes, but you got to have your engine built for it. Lots $$$ and headaches...
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Old Jun 30, 2010 | 02:52 PM
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Well ssp didn't make them himself... I'm sure you can find out more if u get ahold of him.. He's a busy guy and has stepped up for the ra community before ...
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