Help identifying CP "flat-top" Pistons

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04-15-2008, 05:33 PM

DragWerks

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Help identifying CP "flat-top" Pistons

I acquired some cp pistons... not sure on the compression, but they are completely flat, not domed or dished.

Inside the piston is stamped 79-2

If anybody knows what the part number is for these pistons or what compression ratio (B16), I'd appreciate it

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04-15-2008, 05:39 PM

tannerLSt

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if they are flat tops... they are close to 10:1

i'm running wiseco's flat top pistons... they are 10:1

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04-16-2008, 01:01 AM

a1320honda

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Re: (tannerLSt)

these are my 9.1 i just got

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04-16-2008, 05:33 AM

.CUBISH.

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Re: (a1320honda)

flat tops in a 1.8 motor will be around 10 to 1.. in a b16 they are around 9 to 1

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04-16-2008, 10:06 AM

DragWerks

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Re: (.CUBISH.)

^^^ thats what i gathered... thanks

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04-16-2008, 10:29 AM

a1320honda

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Re: (DragWerks)

I was worried about the same thing, and CP compensates for for the smaller combustion chamber of a vtec head. so the pistons i got are made for LS block with VTEC head to have a CR of 9.1, if i were to put an LS head in the block the CR would drop to around 8.1.

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