Jrowley1986
New Member
Fabricating my own exhaust on my 76 CB750 and i wanted to take two 2 into 1's and dump them under the bike. Basicly what my question is, is that if i keep the OD of the exhaust inch and a half even after i junction them together, is that a propper OD in my end result. or should i bump the exhaust OD up after they join? My worries are too much back preasure, and/or not enough flow . Therefore creating a choke and creating high exhaust temps. Possibly burning up an exhaust valve......any help and advice would be MUCH appriciated. thanx in advance fellas. n-at
