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[pb64tr4]

Can anybody please tell me what guage of steel was used in TR4 bodies? I have to do some weld in patches and I am not sure what to buy. Thanks 

[charley fitch]

This is as close as I can tell you.  The metal in my TR3 appears to be 20 gauge.  This is also the gauge that is used on the patch panel that I recently bought from Roadster Factory ( which came from England).  To be sure what you can do is to obtain a measuring device to measure the thickness of your metal that you remove and then use that to go buy a replacement piece of metal.
I found that 20  gauge seems to be about .034" and 22 gauge is .030".
I am assuming that the metal thickness did not change from the TR3 to the TR4.
Hope that this helps.
Charley Fitch