Just acquired a "new" 640 Adv recently..
As i already have one, have been in the process of transferring upgrades from the old bike to the new one..
Sent the bike in to have the leo vince fitted & the carb set up to correspond ..
Well impressed, feels brilliant, sounds great, very responsive, just felt a slight leak on the pipe...
Anyways, never mind, swopped bars, & raisers, & guards last nite, started her up this morning, ( as i finished fairly late last eve)
Well, suspected all along there was a leak between the tailpiece & the header...
Sadly Not.. the header has a spreading crack around the mid mount to the frame ... I will try & Tig weld this in the morning on a very low setting.. Its paper thin, & Im a bit scared of burning through....
Will see...
Removing the header pipe is a process, which requires removing tank, fairing, dropping sub frame, ( not full removal) , & removing the rear shock, after which it is easily removed with the application of a few well placed swear words...
I am considering just going the whole hog, & ceramic coating the header as I have done with "Doris"
Sheeet, been 2 weeks & nt even a proper ride yet, as Ive wanted to get stuff sorted ..
( First priority was valve clearance as im not qualified)..
Getting frustrating now, as the old bike needs retuning for the pipe swap..)
Maybe i will have to fit the repaired pipe, just for a ride...