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> 40 over pistons in 5sfe, using 7afe pistons
post Dec 24, 2010 - 10:22 PM
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STCelica



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alright i have a question that maybe some one could help me with. i am going to rebuild my 5sfe engine and i have a set of 40 pistons for a 7afe laying around. they are brand new with the wrist pins and rings. could i use these on my 5sfe engine if i gave the pistons to the machine shop and told them this is whats going in. any help would be great. thanks


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1997 Celica Convertible (going to rebuild again)
1994 TT 6Spd Supra
1969 Camaro
1997 S-10
1997 Astro Van
 
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post Dec 25, 2010 - 8:42 AM
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mkernz22



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they're not bigger than the 5s because the 7a cylinders are narrower. If the 7a is 81mm and the pistons are 40 over, that means they are 81.4mm, not 85mm. The 5s has a 87mm bore. If you look in the stickies it would tell you.
You can't hone the 5s an expect it to become smaller...

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