Front exhaust pipe length

[kaysystems]

Hi

I never had a stock muffler or front pipe since I bought my '66 Mk 3 in 1974. Now that I have one and a new front pipe, how long is the front pipe supposed to be? Mine goes almost to the rear of the shifter box, meaning it needs to go 3 1/2 inches into the muffler. Seems like a lot.
Is this correct.

Thanks

David

[nalimugmug]

A few pics for you

WhatsApp Image 2026-07-17 at 13.24.23.jpeg

WhatsApp Image 2026-07-17 at 13.23.56.jpeg

WhatsApp Image 2026-07-17 at 13.23.25.jpeg

[kaysystems]

Thank you

Do you know what the original finish on the front pipe retaining nut was? Paint would surely burn off.

David

[blethermaskite]

Pretty sure its cadmium plated. Cheers George

[kaysystems]

I was looking at the one for sale from Mdina - https://www.bevelsingleparts.com/340 - says it is plated. Mine has had the brass showing through since I bought the bike in '74.

David

[kaysystems]

Folding footrest clocking.

Best way to make sure th left footrest folds up, not down (like mine right now).

I'm thinking metal, or fiber washer. There's no room for a nut on the back. I think I have a reproduction footrest

Thanks

David

[ranton_rambler]

Thank you

Do you know what the original finish on the front pipe retaining nut was? Paint would surely burn off.

David

Flicking through the Mick Walker book, the factory finish is clearly plated. Could have been chrome I suppose, but more likely Cadmium.

[Jordan]

Folding footrest clocking.

I installed a thin nut on the footpeg bar so it could be locked in any position.

[Eldert]

the problem with the new header pipes is that they are hanging to low . they are all made for the 250 widecase engines that have a longer conrod and therefore the pipe hangs lower

if you choose to put a thin nut on your folding footrest the thread is 7/16 UNF

Eldert

[blethermaskite]

I also use a thin nut to lock the folding footrest in the correct orientation, Cheers George