As above.
My brother has a WRX ( back in Oz) that suffers from piston slap when cold. But goes when warm. How/What/why and can it be cured on an m20b27???
Piston Slap. What is it and how to cure it
Moderator: martauto
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Dan318-is
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piston slap in my m20 was caused by a seized piston ring, and damaged the bore so much that it needed a rebore
typically however, slap is caused by improper fit of the piston in the cylinder bore. the piston is usuaaly too small or the bore is too large (i think),
typically however, slap is caused by improper fit of the piston in the cylinder bore. the piston is usuaaly too small or the bore is too large (i think),
Last edited by Dan318-is on Fri Nov 11, 2005 12:47 pm, edited 1 time in total.
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kam-325i
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I Think Piston slap is excesive bore wear. To much play between the pistons and bore wall causing the piston to "slap" around.......
EDIT: damm, he beat me to it
EDIT: damm, he beat me to it
Last edited by kam-325i on Fri Nov 11, 2005 12:20 pm, edited 1 time in total.
Pete don't care about colour, He would shag a rainbow if he could find the end of it....
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Dan318-is
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bore wear = not good dude!
try a compression test on all cylinders when engine is cold and warm
try a compression test on all cylinders when engine is cold and warm
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Motorhole
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Forged pistons can cause piston slap when cold also. They expand more than cast parts, so typically cut slightly smaller than forged pistons (I think...!?)