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Old 11-13-2005, 02:15 AM   #1 (permalink)
cargodclub
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Question question about buying piston for dohc zc.Thanks

http://cgi.ebay.com/ebaymotors/CIVIC...QQcmdZViewItem

i wish to buy piston there
i wish to upgrade my zc dohc from 9.5:1 to 12:1 compression ratio?

will their piston work??

since i know piston from d15b,d16z6 will not work on dohc zc
and with lower compression ratio
right?
what will be the cc if i have installed .040 OVERSIZED piston about 1650cc?


thanks again
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Old 11-13-2005, 05:30 AM   #2 (permalink)
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These are in a sense stock replacements for the dohc ZC. I doubt they will raise the compression if any, and have heard they are cast not forged.
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Old 11-13-2005, 05:43 AM   #3 (permalink)
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they send thier piston are stroner than stock
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Old 11-13-2005, 01:02 PM   #4 (permalink)
 
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and they said that raise the compression... does any one have exprension with that pistons?
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Old 11-13-2005, 01:05 PM   #5 (permalink)
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They raise compression if placed into other motors because there the highest dome. I'm just stating what I've heard people say about them. I never used them - go for 50-180 on ebay from quit-quit and aftermarket go for at least 400. Something just does't seem right.
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Old 11-13-2005, 01:51 PM   #6 (permalink)
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yea
i am confirming that
since zc psiton will make 12:1 in d15b but no change in zc dohc
thanks again
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Old 11-13-2005, 05:33 PM   #7 (permalink)
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I ordered the same package from a different seller on ebay, for my usdm d16a1. These pistons do not raise the compression ratio, what gains in compression I made came from my head getting decked. I read 220psi on my compression check after the rebuild, if I remember correctly. Anyways, they are cast aluminium, I wouldn't run boost on these bad boys. They are great stock replacements, so if your ok with keeping your ratio the same, go for it.
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Old 11-14-2005, 04:28 PM   #8 (permalink)
 
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aluminium is less haevy so they should rev faster..
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Old 11-15-2005, 04:28 AM   #9 (permalink)
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but my stock zc piston is not an aluminium ones?

i just know the stock block is aluminium
thanks
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Old 11-15-2005, 10:46 AM   #10 (permalink)
 
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i dont know that i only say that aluminium should rev faster by logic if the stock ones are aluminium too so should be the same thing but shippest!
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Old 11-15-2005, 12:53 PM   #11 (permalink)
 
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If you have a ZC motor you already have these pistons in there. They are basically a p29 or pm7 piston.

Now if you have an a6/z6/y8 block and use the stock rods, they will raise your compression from approx 9:1 to 12:1.

Basically that is what I'm going to be doing to my recently aquired a6 block....getting the stock rods shot peened and having the shop install the domed pistons on the rods.

This link should help you out...
http://www.knology.net/~jediklc/D.htm

BTW...your pistons are aluminum....if you want it to rev faster go with a lightened flywheel.
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