2.5 pistons in an ej22t?

Heads, valves, pistons, rods, crankshaft, etc...

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TurboLegacy
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2.5 pistons in an ej22t?

Post by TurboLegacy »

is there enough cylinder clearance?

-im going for big power

any stroking tips
Last edited by TurboLegacy on Sun Sep 12, 2004 4:41 pm, edited 1 time in total.
92 legacy turbo 5spd fwd-12 psi, tm intercooler bov, walbro 255.

81 chevy malibu- 400 sb, holley 600, edelbrock rpm, hooker headers, lunati voodoo cam,4spd muncie, 3:73 posi,monte c. swivel buckets, corvette rally wheels
entirelyturbo
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Post by entirelyturbo »

The EJ25 is essentially a bored-out EJ22, so logically this must mean the EJ25 pistons have a larger bore, so no, I don't think they'll fit...
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TurboLegacy
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Post by TurboLegacy »

can anyone else help me?
92 legacy turbo 5spd fwd-12 psi, tm intercooler bov, walbro 255.

81 chevy malibu- 400 sb, holley 600, edelbrock rpm, hooker headers, lunati voodoo cam,4spd muncie, 3:73 posi,monte c. swivel buckets, corvette rally wheels
BAC5.2
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Post by BAC5.2 »

You'd be better off getting custom pistons ground. What kind of "big power" are you looking for?

Also, do you have an extensive mod-list and dyno-chart? I'm curious as to how you got 180whp and what the power curves look. Also curious about the 17" "icw" rims.
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Matt Monson
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Post by Matt Monson »

There are a couple of ways to approach this.
1. Overbore using the stock sleeve. Many will tell you the sleeve gets too thin to use at this point, but others have done it.
2. Overbore and resleeve for the 2.5 pistons
3. Get custom forged pistons for the 2.2 from someone like AxisPowerRacing.

As for stroking, which is a totally different beast, you use a 2.5 crank, but had better be sure your pistons are matched to the new stroke.

You really haven't given us a lot to work with here. If you want more detailed and specific answers, give us more info. Like budget, desired HP, what turbo and boost you plan on running, etc. But the basic answer to your question is NO, EJ25 pistons do NOT fit...
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