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Motorcycle Discussions => British Bikes => Topic started by: bwg3coy on December 09, 2018, 03:03:09 PM

Title: but size for Centre tank- Exhaust downpipe diameter
Post by: bwg3coy on December 09, 2018, 03:03:09 PM

I have a 1977 Triumph Tiger TR7V.
I have forgotten the nut size of the Centre tank nut?
Also the diameter of the exhaust down pipe? I think it’s 350mm?
Can anyone help

Title: Re: but size for Centre tank- Exhaust downpipe diameter
Post by: Rex on December 09, 2018, 03:36:26 PM

350mm would be the diameter of the exhaust pipe on the QE2! ;)
From a (very distant) memory, the nut is 5/16" UNF.

Title: Re: but size for Centre tank- Exhaust downpipe diameter
Post by: bwg3coy on December 09, 2018, 06:19:37 PM

Thanks Rex👍

Title: Re: but size for Centre tank- Exhaust downpipe diameter
Post by: Grunt on December 11, 2018, 01:31:03 PM

The tank mounting nut and stud is 5/16UNF, part numbers 14-0302 and 83-4930. The diameter of the into head exhaust on my ‘77 Bonnie is more canal boat size at 35mm.