Nearly finished my rebuild on the Comet just fitting the exhaust pipe. The nut wont screw in! Now I think I am quite good on this item but it wont go in. I have a spare nut or two in the stash and one of those fits a treat, I get out the calipers and yes the one on the pipe is an oversize nut I guess the 90 bore head had been 'seen to' and this new head is a pretty new standard head so its time to change nuts. I have a socket that just slips in the pipe and fitted to an extension in the vice I heat up the pipe and flatten the flange, then I swap nuts and get out my trusty 2 piece clamp. Its nothing special just a piece of alloy round bar about 1" or so long with a hole in the center same size as a pipe with about 3/8" parallel bored and the rest re-leave tapered then split in half. But without it you would have to be a real blacksmith to achieve a new flange. Pipe up the heat start the flare with a ball pain hammer flatten out with a tap hammer and file the face and flange sides then finally make sure the flange fits right up inside the port. add gasket then screw in nut by hand well into port, tighten a turn or so and leave final tighten till the engine is warm.
The workshop is the only cure for the Ground Hog day syndrome so why not tell us about your days job?
The workshop is the only cure for the Ground Hog day syndrome so why not tell us about your days job?