b20 bore help

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Dec 15, 2009 | 04:11 PM

kandstd16t

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From: sonora CA,

b20 bore help

i was just wondering how far you can safely bore a b20 out to on stock sleeves the motor is going to be just a all motor with a mild cam and thats it

Dec 15, 2009 | 04:21 PM

VTECJUN

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From: speedfactoryracing.net

Re: b20 bore help

I have gone 85mm with a block guard just to be safe with the RS Machines 85mm pistons. Motor is still going strong after 1 year. It made 235hp and 162tq with no issues.

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84.5mm on a b20 block. makes the sleeves too weak?

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