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Can you calculate my new compression ratio after getting my head milled?

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Old Feb 26, 2003 | 07:37 AM
  #1  
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Default Can you calculate my new compression ratio after getting my head milled?

I had 8.5:1 compression. I had my head milled with 0.010 removed.

Can any one estimate what my new compression is?
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Old Feb 26, 2003 | 09:25 AM
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Default Re: Can you calculate my new compression ratio after getting my head milled? (Hybrid)

Which motor is it? That is important. That milling should bump comprssion up 0.1-0.2 points
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Old Feb 26, 2003 | 10:31 AM
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Default Re: Can you calculate my new compression ratio after getting my head milled? (xThexHeadx)

Z6 block with Y8 head, my Arias pistons give me 8.5:1 compression ratio with that head/block combo.

So with the head milled 0.010 over, then my final compression is.....................................?

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Old Feb 27, 2003 | 04:10 AM
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Default Re: Can you calculate my new compression ratio after getting my head milled? (Hybrid)

bump
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Old Feb 27, 2003 | 04:13 AM
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Default Re: Can you calculate my new compression ratio after getting my head milled? (Hybrid)

about 8.7:1
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Old Feb 27, 2003 | 11:53 AM
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Default Re: Can you calculate my new compression ratio after getting my head milled? (turbodav)

.010 is equivalent to about .2-.3 points of compression. So you are at about 8.8:1
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Old Feb 27, 2003 | 04:33 PM
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Default Re: Can you calculate my new compression ratio after getting my head milled? (AzSi22)

http://www.c-speedracing.com/howto/c...c/compcalc.php


Good Site
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Old Feb 27, 2003 | 05:51 PM
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Default Re: Can you calculate my new compression ratio after getting my head milled? (Hybrid)

Just curious, not trying to start anything. Why did you get low CR pistons and then get your head milled to raise the compression?
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Old Feb 28, 2003 | 08:29 AM
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Default Re: Can you calculate my new compression ratio after getting my head milled? (slomofo)

Just curious, not trying to start anything. Why did you get low CR pistons and then get your head milled to raise the compression?
Probably turboing the motor and needed the head milled due to warpage?
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Old Feb 28, 2003 | 11:59 AM
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Default Re: Can you calculate my new compression ratio after getting my head milled? (AzSi22)

I blew the damn motor and damaged the head. Put it back together, realized this afterwords. Its winter here, so I have the car in peices. The head is not ready to go back on.

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