Last I knew, Champion still had an L82YC. I don't know what they might have
that's any colder than that. Over the years, I've managed to find a few L66Y
and L64Y plugs on eBay (they're what came with and what I used to use in my
Spitfire 4 autocross car, which had previously been a GP SCCA race car in the
1970s).
--Andy Mace
*Mrs Irrelevant: Oh, is it a jet?
*Man: Well, no ... It's not so much of a jet, it's more your, er, Triumph
Herald engine with wings.
-- Cut-price Airlines Sketch, Monty Python's Flying Circus (22)
Triumph 10 / Herald / Sports 6 vehicle consultant, The Vintage Triumph
Register: http://www.vtr.org
Check out the North American Triumph Sports 6 (Vitesse 6) and Triumph Herald
Database: http://triumph-herald.us
-----Original Message-----
From: Dan Forgey <cofrog at q.com>
To: triumph fot <fot at autox.team.net>; triumph <triumphs at autox.team.net>
Sent: Fri, Apr 27, 2018 8:11 pm
Subject: [TR] TR4 Spark Plugs
I've got a TR4 w/.100 off the head and Kastner D cam and headers here in
Colorado (just over 5,000 ft.). I'm running Champion L87YC plugs and am
thinking of trying something colder as sometimes there is pinging when I'm not
on it. I see Champion makes an L86C but I have no idea how much colder this
compared to the L87YC. Anyone have any input?
Thanks,
Dan Forgey
** triumphs at autox.team.net **
Archive: http://www.team.net/archive
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