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TR6 The Importance of Tiny Parts in Distributor

SherpaPilot

Jedi Hopeful
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I live in central Texas and owned my TR6 for 39 years. Two years ago my engine and transmission went through a professional rebuild. During the rebuild I sent the distributor to Advanced Distributors in Minnesota for overhaul and recurve. They did a great job and sent the unit back with some advice. They advised to shed the electronic ignition and stick with the stock point system. The concern with electronic is stray voltage and arcing within the distributor cap. I followed this advice and retained my point system. Fast forward to this week. It was a beautiful "top-down" day for the TR6 and I took the Triumph out for a run. While enjoying the car, suddenly it began missing, back-firing, running rough and forcing me to put along at 5 mph. My first thought was the failure of the timing chain. With lots of effort, I was able to get the car back home and into my garage. Over the next day, while trying to figure out this problem, I discovered within the distributor the thin plastic insulation plug that rides in the points had cracked and broke off. Therefore the sudden missing and rough firing was simply an electrical failure. I had changed these points many times since the rebuild and that small plastic washer was always changed. It never dawned on me how important that little thing was. So the point of this story is the big things get blamed but sometimes the tiny small things are the culpret.
 
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