RE: hotter plugs on hopped rebuild

[Mike Rolica <mrolica@meridian-mag.com>]

Umm ya....own a rx7 once.....
Mike Rolica
Plant A,
Magnesium Products Division
Strathroy

(519)-245-4040  Ext. 244



	-----Original Message-----
	From:	Programmer [SMTP:nwester@eidnet.org]
	Sent:	Saturday, July 29, 2000 10:12 AM
	To:	gmecm@diy-efi.org
	Subject:	Re: hotter plugs on hopped rebuild

	If anything, go a range cooler and stick with the stock gap (or .005
	smaller). A hotter plug will always erode quicker, can cause
detonation--yet
	however, fire easier with a wider gap. The ol' thought was wider
gaps fire
	leaner mixtures--which is true. Under
	higher compression, the wider gaps caused more emissions due to
	miss-fire...my
	personal experience is that colder plugs are better overall. We race
with #7
	range NGK's in our BBC. Anyone ever pay $35 bucks for a spark plug
?? <g>
	Lyndon.
	-----Original Message-----
	From: lpwcruzr <lpwcruzr@netzero.net>
	To: gmecm <gmecm@lists.diy-efi.org>
	Date: July 28, 2000 11:40 PM
	Subject: hotter plugs on hopped rebuild


	>I just had my LO5 TBI350 truck motor rebuilt. It was bored 30 over
and now
	>has a cam with 204/214 duration, 420/440 lift and separation of
110. The AC
	>Delco book list a plug of CR43TS with a gap of .035. I am wondering
if
	>moving to a CR45TS and widening the gap would be beneficial. .035
seems
	>awfully tight for a HEI ignition. Anyone see a problem with the
hotter
	plug?
	>
	>Paul Washburn
	>lpwcruzr@netzero.net
	>
	>
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