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  #1  
Old 10-02-2003, 12:22 PM
aces1980 aces1980 is offline
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compression ratio?

Does anybody know the compression ration of a D16Y8 head on a D16A6 block?
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Old 10-02-2003, 02:43 PM
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i remember it being about 10.8:1
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Old 10-02-2003, 04:07 PM
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Looks like we'll be using 2 head gaskets for our mini-me turbo project.
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Old 10-02-2003, 05:18 PM
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2 Head gaskets? Doesn't sound too smart, a better idea would be to buy a thicker head gasket.
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Old 10-02-2003, 08:07 PM
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y8 head with a6 pistons 10.06
z6 head with a6 pistons 9.7

z6 and y8 headgasket are same thickness

lowest compression for single cam would be a6 head with z6 pistons at 8.66
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Old 10-02-2003, 08:10 PM
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i knew it was 10 somethin. Anyways, i was gonna build up my D16A6 block and put in Z6 pistons and now im happy that it will be low compression.
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Old 10-02-2003, 08:12 PM
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Re: compression ratio?

Quote:
Originally Posted by 90CRXZCSi
i knew it was 10 somethin. Anyways, i was gonna build up my D16A6 block and put in Z6 pistons and now im happy that it will be low compression.
what do you plan on going turbo?
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Old 10-02-2003, 08:24 PM
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Since we are on the topic of compression ratio how can I calculate it/ I want to know the compression on a a6 block with an a6 head but with zc pistons, also the comp of an a6 block with a z6 head and zc pistons. If anyone can help it would be much appreciated.
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-waiting to be built-my spare a6 block, with y8 head, 93 valve cover, z6 intake manifold, integra tb....
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Old 10-02-2003, 08:30 PM
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a6 head and block with zc pistons would be 10.7
and the z6 head with a6 block and zc pistons would be 11.58
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Old 10-02-2003, 08:52 PM
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civichbsi91 thanx for the help. Also how did you find that out? Do you just know it, is there a site that has all the info, or is there a way to calculate it so in case I have more questions I can figure it out my self.
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1989 Crx Si
-Aem cold air intake
-thermal cat back
-test pipe(makes exhaust sound really bad)
-Skunk2 short shifter and knob
-Hx wheels
-Tenzo front and rear strut bars
-parts waiting to go on- nuespeed header
-waiting to be built-my spare a6 block, with y8 head, 93 valve cover, z6 intake manifold, integra tb....
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Old 10-02-2003, 09:08 PM
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Re: compression ratio?

Quote:
Originally Posted by jam4484
civichbsi91 thanx for the help. Also how did you find that out? Do you just know it, is there a site that has all the info, or is there a way to calculate it so in case I have more questions I can figure it out my self.
i have a chart with D series piston/head combinations
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Old 10-02-2003, 09:09 PM
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Is there any way that I can find a similar chart or do ou know where I could pick one up?
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1989 Crx Si
-Aem cold air intake
-thermal cat back
-test pipe(makes exhaust sound really bad)
-Skunk2 short shifter and knob
-Hx wheels
-Tenzo front and rear strut bars
-parts waiting to go on- nuespeed header
-waiting to be built-my spare a6 block, with y8 head, 93 valve cover, z6 intake manifold, integra tb....
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  #13  
Old 10-02-2003, 09:12 PM
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search the web my friend
google, yahoo
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Old 10-02-2003, 09:30 PM
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Re: compression ratio?

http://www.knology.net/~jediklc/D.htm
even better
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  #15  
Old 10-02-2003, 09:34 PM
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nice find!
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