Piston fitment

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02 October 2012 | 02:30 PM

maxscooby

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Piston fitment

Quick question someones got wiseco pistons which he had for a 02 plate sti with a 2.5 block. not sure what they mean by 2.5 block. But as a 56 reg hawkeye has a 2.5 block will they fit the hawkeye e.g.

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02 October 2012 | 02:40 PM

banny sti

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From: Type R

yes they will fit but the block will need machining to make sure they fit properly

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02 October 2012 | 02:43 PM

maxscooby

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Nice 1 mate

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02 October 2012 | 10:56 PM

rob84

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From: somewhere out there

std bore on a 2.5 is 99.5mm ideally you need to bore like banny suggested and fit a set of 99.75 mm with correct clearance

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02 October 2012 | 11:29 PM

maxscooby

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it says on the box
comp. HT 1.2300
Bore: 3.9180
any idea wat dat means lol

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02 October 2012 | 11:48 PM

TimH

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From: JT Innovations Ltd.

99.5mm is 3.917"...3.918" is 99.52mm...so I'd say you have 99.5mm pistons.

"comp. HT" is "compression height" so is 1.23"/31.24mm but no idea if that's standard.

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