TR2/3/3A TR3 Exhaust header's proximity to rear of generator?

[karls59tr]

Anyone else running exhaust headers and find that the front pipe is too close to the generator causing the generator to get so hot that it melts solder connections inside? Anyone have any recommendations for a" heat shield" to wedge between the two?

 

[TR3driver]

In my experience, thrown solder indicates a misadjusted (or incorrect) control box rather than headers too close. I ran headers for several years with no generator problems, once I learned to set the box by the book.

But it should be easy enough to fab something from thin sheet metal. Cut and bend a couple of tabs to clamp to the header tube with a hose clamp.

Another alternative would be an alternator conversion. They are usually shorter and hence leave more room.

 

[Geo Hahn]

My non-TR has a simple sheet metal heat shield behind the alternator. The early version was more of a shroud but then they went with something much simpler:

Of course it may well be that an alternator (esp the diodes) is more vulnerable to high heat. I've never had an issue with the TR Dynamo so long as I kept the rear bearing oiled.

 

[TR3driver]

Geo's photo reminds me of another point : the insulation on the wires will melt and run at a much lower temperature than the solder melts.

Interesting photo, Geo. Early 70s Jag, with the externally regulated Lucas 11AC alternator ?

 

[Geo Hahn]

...Interesting photo, Geo. Early 70s Jag, with the externally regulated Lucas 11AC alternator ?

Very close. 1969 Series 2 E-Type. And it has been a (enjoyable) learning experience after 40 years of exclusively Triumphs.