My understanding is that you can go at least as high as 9.5:1 or perhaps 9.6:1
and still be fine on regular gas. At least I hope so, I had my head and block
machined for 9.6:1 based on that assumption. It would not ruin my whole day if
I had use a higher octane however.
Stan
-----Original Message-----
From: 6pack-bounces+stan.foster=hp.com@autox.team.net
[mailto:6pack-bounces+stan.foster=hp.com@autox.team.net] On Behalf Of Alan
Salvatore
Sent: Friday, June 13, 2008 10:56 PM
To: triumphs@autox.team.net; 6pack
Subject: [6pack] Compression boost
I am in the process of rebuilding my 76 motor.
I had it bored out 20 over and got a G2 cam, aluminum flywheel.
I couldn't decide what to do with the head. I just left it at the machine
shop and am going to have it milled for
9 to 1 compression.
The nice thing about the 7.5 to 1 compression was that it ran on regular gas.
Not to sure what effect the 9 to 1 will have on gas requirement;
or if I just should have bumped the compression even higher.
Al
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