For 9:1 compression on a 1500 motor, you want to replce the US spec
dished pistons with the UK spec flat-topped ones. You may still need to
mill the head a bit, but this will get you close to the stock UK 9:1
spec.
-=Chris
Chris King
http://home.comcast.net/~kvcbk/
<-----Original Message----->
From: elliottr@rmi.net
Sent: 5/8/2006 5:53:56 PM
To: spitfires@autox.team.net
Subject: 1980 Spitfire Head
I am considering having the head on my Spitfire milled down to give me a
little more compression. It is a stock 80 head so it is currently about
7.5 to 1. I am thinking of taking it to about 9 to 1. Can anyone tell me
how much I would need to take off to get it to that compression?
If I do have it milled down, do I need to get shorter pushrods or is
that within normal adjustment.
Thanks,
Roger Elliott
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