Ron, I'm running the Crane PS20 ( 40kv with ballast). Ballast is not part of
the equation on the gap (assuming that you have teh right coil or effectively
shorted out the ballast. Your ballast resistor is a wire that is part of the
wiring loom. All you can do is identify the end of it where it attached to the
coil. Should be two wires on the +ve side, one from the starter solenoid
shorting out the ballast and the other the resistor for normal times. I am not
sure what the ballast requirements for Bosch coil is.
Gap I am running is 42 thou. with normal plugs. If you search the spitlist
archives most are in the high 30's to low 40's region. Since opening the gap is
changing teh emision is is not written anywhere. I called the manufacturers
(Crane) support line and that is what they said to me.
Alan
Original Message:
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From: Ron Deaver rrdeaver@emagichappens.com
Date: Sun, 22 Oct 2000 23:29:22 -0700
Subject: Bosch Blue Coil & Plug Gap Adjustments
The resurrection continues (I do plan on a writeup when not buried under
the bonnet). I would like to replace the stock 20-year old Lucas coil with
something not prince-blessed. The Bosch Blue Coil sounds good, but one
thing comes to mind...
Hotter coil ads often advise that you can run a larger plug gap when
upgrading to the hot coil. I have not found advise on just *how* much
bigger of a gap to use.
My lil brown 1980 Spitfire has Allison ignition and Bosch Platinum
plugs. Any advice on how big of a plug gap to use with the Bosch Blue
coil? Nope, I do not have a resistor installed (none that I can find anywhere).
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