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View Full Version : what size pistons??


adams86lxi
05-17-2006, 11:16 PM
Ok so im putting some stock pistons in my car for now and i need to know what oversize pistons should i get?

i know standard sized is 82.7 and my JE pistons i have are 83mm?? So anyone know what sized pistons i should get or where to get them for cheap?
SteveDX89
05-18-2006, 01:12 AM
83 would be the next size up over stock. Well, 82.95 to be exact.
adams86lxi
05-18-2006, 08:28 PM
.030?


nah i thought that too but it would more be like .3mm which is .01181 inches?? i have no idea if they sell pistons in that size oversize?
SteveDX89
05-19-2006, 03:29 AM
Piston sizes are sold in .010", .020", .030" and so on. .010" = .25 mm, .020" = .5 mm, etc.
AccordEpicenter
05-19-2006, 04:31 AM
apparently they sell them in .3mm oversizes also. So there is .3mm oversize and .030/.020/.060 etc too. I just figured this out also steve
SteveDX89
05-19-2006, 08:18 AM
apparently they sell them in .3mm oversizes also. So there is .3mm oversize and .030/.020/.060 etc too. I just figured this out also steve

Never knew that. Might just be an A20 thing so then when it get's bored, it's an even 83 mm. I don't think they sell that size for B-series.
AccordEpicenter
05-19-2006, 02:13 PM
well actually its like 82.95 i think for 83mm bore. Factory honda oversize pistons are this way, custom pistons can be had either in metric oversize or standard oversize.
adams86lxi
05-19-2006, 03:16 PM
sooo after all this talk... what oversize size should i get my pistons in then lol???
88Accord-DX
05-19-2006, 03:39 PM
To get the right size pistons. You need to have a telescoping gauge & outside micrometer to measure your cylinder bores. (&/or use dial bore gauge)
AccordEpicenter
05-19-2006, 03:46 PM
yeah... what size are your bores? Are you gonna have to overbore again? Need pics and info.
adams86lxi
05-19-2006, 06:16 PM
To get the right size pistons. You need to have a telescoping gauge & outside micrometer to measure your cylinder bores. (&/or use dial bore gauge)


yea i know i need one but i lost mine lol... But im thinkin its just bored .010 over since thats about what i come up with if u do the math??

So does anyone know any places that would have stock pistons for cheap in .010 over?
AccordEpicenter
05-19-2006, 07:53 PM
eGay
gfrg88
05-19-2006, 07:57 PM
the real question is WHY do you want stock pistons when youve got forged ones??? :dunno:
88Accord-DX
05-28-2006, 11:55 AM
the real question is WHY do you want stock pistons when you forged one??? :dunno:
I would just spend the money & bore the block out to 83 mm to use the JE pistons.