The Splitfires were fairly new, from the look of them. The rest of your
comments echo the point I was trying to make.
I had not heard/read that the Bosch Plus 4 was for electronic ignition only,
and I have to say that premise seems counter-intuitive to me anyway. A spark
plug sees a charge of electricity which is generated by a coil. Whether the
coil is triggered by an electronic switch or by a set of points/condenser
surely makes no difference? The coil's output is limited by its internal
design and will not make more or less intense a spark just becuase the
switching mechanism is changed.
Fortunately, my years in the Midwest are long forgotten and I no longer have
to worry about trying to start a car in sub-zero temperatures. However, I'd
be surprised if a new set of Bosch Plus 4 plugs would accomplish a cold
start any better than a new set of conventional (good quality) single
electrode spark plugs. Warming the intake tract to vaporize the fuel mixture
better, and providing a fat spark via means of a 40K volt coil instead of
the 20K original might help, though.
Lawrie
BSC
----- Original Message -----
From: mghirsch <mghirsch@netzero.net>
To: <mgs@autox.team.net>
Sent: Friday, August 31, 2001 12:29 PM
Subject: Re: Sparkl plugs for 52TD
> When you replace the Splitfires with the NGKs, what condition where the
> Spitfires in? IMHO, replacing a used set of even the best plugs with a
new
> set of any plug will result in better burn.
>
> Also the Bosch Plus 4 is not recommended for a points ignition system.
>
> I have used the Plus 4's in my XJ6 for three years with no problem, even
> starting at -40. I would definately put them into my 78B if I decided to
> replace my eurospec pointes distributor with an electronic model.
>
> Maynard Hirsch
> 78B
> 67B
> 86 XJ6
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