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Date: Wed, 08 Feb 2012 12:37:12 -0500
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From: Lorn H Olsen <lorn@dynacomm.us>
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Subject: Re: Tempest spark plugs
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Bill,

I am not a spark plug expert but all fine wire plugs went through the =
platinum stage and then on to iridium. If you get the Champion fine wire =
gap gauge, you will see that platinum plugs gap at .015" and iridiums =
gap at .024". Why? I don't know for sure but I have to guess that there =
must be less resistance in the iridium. The larger gap also should =
lighting the fire better. The post that sticks out to gap to the center =
post has a smaller diameter on the iridium plugs.

Lorn

> From: "Bill Wade" <super_chipmunk@roadrunner.com>
> Date: February 7, 2012 4:18:37 PM EST
>=20
> What's the problem with platinum? I'm running fine wires in both my =
IO-550 and TCM IO-360.
>=20
> I haven't noticed any problems after 300+ hours on each one. -Bill =
Wade

--
Lorn H. 'Feathers' Olsen, MAA, ASMEL, ASES, Comm, Inst
DynaComm, Corp., 248-345-0500, mailto:lorn@dynacomm.us
LNC2, FB90/92, O-320-D1F, 1,800 hrs, N31161, Y47, SE Michigan