Yes, same page you just said it better ;)
And again, likely started with a
cracked spark plug not antiseize... maybe he
'over torqued' the plug and
stretched the threads...
Ok, still useful to keep things clean if that's the
message, it's what I'll take
away, and I still enjoy seeing these type of
videos, always learning what to/not
to do from others costly mistakes is nice
for a change.
How's the Tiger project coming along?
Sandy ;)
________________________________
From: Larry Mayfield <drmayf@mayfco.com>
To:
Jay Laifman <jay.laifman@gmail.com>
Cc: Tiger's Den <tigers@autox.team.net>
Sent: Wed, April 18, 2012 3:19:55 PM
Subject: Re: [Tigers] Anti-Seize on Spark
Plugs
Intersting...but, I am throwing the BS flag on this one. When the plug
was fires, in this case, and the spark arcs under the boot to the metal
case, it is done. The case with its tapered seat grounds the spark to
the
head and no further current flows. The engineer mentions that the
spark
runs down the case to the inside of the spark where the center
electrode is
housed in ceramic and sparks inside there. I don't think
so. Again, in a
normally firing plug, the current flows down the center
of the plug, jumps
the gap and grounds itself on the side of the plug
case. That side is
grounded both by the threads and the plug seat. As
to the anti seize, yeah
too much is a bad thing. But it must also be
noted that the common variety
anti sieze compounds use some sort of
metallic powder in them. I have two
different kinds, one with small
copper microballs and one with a nickel alloy
for higher heat
applications. The metals in the anti seize are conductive in
themselves so having them between the threads and head material is a
non
issue. getting the goo on the electrode is a problem though and you
should
avoid that. Also, getting it on the exterior plug ceramic is a
no no as
well. Why? well because it IS conductive stuff. so if you have
a db on the
ceramic the spark energy will take the easiest path to
ground and that isn't
through the center electrode. Anybody remember
what the plug torque is for
their spark plugs in their Tigers? I don't
see it in the repair manual. I
didn't get a torque spec with the
aluminum heads for the race car either.
Most say something like hand
tight plus a bit extra with the wrench. As
to putting the dielectric
grease inside the boot. Oh yes! It makes those
suckers really easy to
get all the way on. And that makes good electrical
contact with the
center electrode. It doesn't seem to help me get the boot
off though.
Just use a dab of ante seize. like a bit on a q tip. Or use
milk of
magnesia, works just as well and is non conductive.
happy sparking
mayf
______________________________
drmayf
Worlds Fastest Sunbeam, period.
204.913 mph flying mile
210.779 mph exit speed
On 4/18/2012 12:51 PM, Jay
Laifman wrote:
> Every car guy should watch this!
>
>
http://www.youtube.com/watch?v=1zw7d8B8ETw&feature=player_embedded
>
> Jay
>
_______________________________________________
>
> tigers@autox.team.net
>
>
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