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Re: Bugeye Group..... Re: Aluminum Head Sun, 1 Aug 2004 15:26:40 -0700

To: bugeye@yahoogroups.com
Subject: Re: Bugeye Group..... Re: Aluminum Head Sun, 1 Aug 2004 15:26:40 -0700
Date: Sun, 1 Aug 2004 18:39:09 -0400
Cc: bugeye@yahoogroups.com (Bugeye), spridgets@autox.team.net (Spridget)
OH!!!!!

You want to LOWER it to 9.0-1!!!
Sorry...misunderstood you, Larry.
Apologies.

Oh, yeah. 12.0-1 is racing gas territory
today. Oh for leaded Gulf No-Nox or
the Sunoco "260" of yesterday....100+
RON...."manly" octanes!!! ) 

Bill (he oughta know?) recommends no
higher than 9.0-1 with the stock cast
iron head using today's unleaded hi-test. 

Normally, you can run a full
point higher with an alum. head on the
same octane with the same "safety factor"
(against detonation/pre-ignition) with the
same ign. advance, according to my
mech (30+ year "pro" mech).

But Bill's forte is Series A's so I'd check
with him, were I you. He's pretty
conservatively on the "safe" side when
it comes to total ignition advance so I
would ass-u-me he'd be so when it comes
to CR on today's unleaded octanes, as
well.




Cap'n. Bob 
     '60 :{)






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