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NUSTAD 510
PostPosted: Tue Apr 08, 2014 8:06 pm 
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Joined: Sun Nov 16, 2008 11:54 am
Posts: 35
Location: Newbury, Australia
Hi all, can anyone tell me the compression ratio of my engine. The block is early L20 with a 1mm overbore, dished pistons, standard crank and rods, A87 head and L16 sss cam. Tried engine calculator but got a static comp of 21:1. That can't be right. Many thanks, Shaun
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lampy
PostPosted: Tue Apr 08, 2014 9:06 pm 
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Joined: Sat Nov 06, 2004 8:17 pm
Posts: 916
Location: Western Australia
You need to adjust the volume of the cylinder head in the calculator. From memory some heads in there are set at around 1 cc.
A87 is 41cc

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