6.5hp Tecumseh straight pipe mod?
I have been trying to figure out how to put a straight pipe on my 6.5hp Tecumseh engine on my go kart. The problem i have is that it is flanged and not threaded. what can i use to make a custom straight pipe? i have a M.I.G. welder and my brother has another one that burns hotter. can’t remember type. i have some old bike seat posts. some seem to be just about a cm. or so to small for the hole.
I would go to a welding shop (to purchase metal). They probably have something better than some old bike seat pieces. You will probably have to build and drill your own flange. Good luck.
Go Kart Custom Muffler

I agree. Measure the outside of your exhuast pipe then go pipe with a comparable inside diameter so it slides over the existing pipe. Then you can weld it with a lap weld using your mig.