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Type J overdrive question (solenoid or not)

To: "Bowen, Patrick A RP2" <PABowen@sar.med.navy.mil>
Subject: Type J overdrive question (solenoid or not)
From: Barry Schwartz <bschwart@pacbell.net>
Date: Wed, 05 Jan 2000 06:26:56 -0800
>Actually Dan,  According to the book Spitfires & GT-6's a Guide to
>Originality  J-type overdrives do not require a solenoid.  None of the spits
>I have worked on have ever had it, but that doesn't mean that some of the
>early j-type overdrives might have had one just as a carry over from the
>d-types.
***********************************
I think you mean a solenoid RELAY.  All the "J" type overdrives (I have
ever seen) have a solenoid, it's just not the 2 stage, high amperage one
that was used on the older type overdrives.  It's also listed in all the
repair and parts manuals (part number NKC41) and at around $180 quite
expensive.  Its located low, almost under the overdrive on the left hand
side and runs parallel to the frame.  The relay that switches the solenoid
is another matter and may or may not be used.  Personally, I would use one
(and do, on my GT6+ with a "J" type) because it uses less switching current
than even the solenoid and will help prevent the switch from burning out
that much sooner -

Barry Schwartz (San Diego) bschwart@pacbell.net

72 PI, V6 Spitfire (daily driver)
70 GT6+ (when I don't drive the Spit)
70 Spitfire (long term project)


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