wiseco comp. ratio specs, confused
02-07-2005, 03:29 PM
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wiseco comp. ratio specs, confused
i am looking to buy wiseco pistons for my b18a1 turbo, which is going to be ran around 14psi. i was looking at wiseco pistons and they don't have a specific compression ratio. every other brand does. they have a set that says 8.3-8.6 and a set that says 9.3-9.8. what kind of comp. ratio should i expect from those and which ones should i go with for my turbo set up. thanks.
02-08-2005, 01:35 PM
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Re: wiseco comp. ratio specs, confused (danthemang3)
The comp ratio they calculate allows for variances of piston-to-deck height. The "big dish" -12CC dished wiseco's net an 8.63:1 compression ratio at zero deck with a stock CC head, and 8.93:1 and 9.08:1 with a B16/ITR or GSR head, respectively. I would not run the -4CC pistons, as they result in 10.4:1 compression with a GSR head and 10.2:1 compression with a B16/ITR head, and if you want to with a VTEC head down the road (which you probably will) I prefer lower compression.
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