6pack
[Top] [All Lists]

Compression and 87 Octane

To: 6 Pack List <6pack@autox.team.net>
Subject: Compression and 87 Octane
From: Kendall Larsen <klarsen@inreach.com>
Date: Wed, 26 Jul 2000 01:26:40 -0700
Tim/Dick you guys really seem to know this stuff so I thought I'd double
check what the machine shop told me. The guy there said that 9.0:1 would be
able burn 87 with out retarding the ignition. what do you guys (or any one
else!) think? I'm thinking I'm going to shoot for 8.75 because the cylinders
haven't been bored out at all yet so when that becomes necessary I don't
want that extra volume to bump my compression ratio into the unworkable
range.(when I serviced the engine I determined a honing would be sufficient
for now and, yes, the rings did seat nicely. )  I'll check those numbers all
over with the machine shop guy again before he starts milling the head but
I'd like to be armed with second opinions before I speak to him again. I
would prefer to be able to burn 87 but still get a performance gain from an
increased compression thus all my fussing about where to draw the line.
Thanks guys.

Kendall Larsen
74


<Prev in Thread] Current Thread [Next in Thread>