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Old 05-15-2010, 08:37 AM
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Cal Learner Cal Learner is offline
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Join Date: Aug 2006
Location: Marysville, CA
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Quote:
Originally Posted by tjts1 View Post
This makes sense. AFIK its very hard to find non resistor plugs these these days.

The following spark plugs are specified for the M103
TR5
TR5GP
ITR5F13
TR5IX
So find one of these without the "R" in the name and you should be good.
The model numbers I gave in my earlier post are the correct NGK plugs for the M103 engine. As for sources, it's true that you cannot just stroll into your local auto parts store and find the correct copper core non-resistor plugs. But there are lots of M103 motors in operation still, and we're finding plugs for them. It's worth trying the places I listed earlier. In addition to those sources, I know that there are several I-net vendors in the UK that stock these plugs and can fill orders within a week.
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