Drill exhaust manifold bolt - Remove head or not?
Update. Unfortunately I didn’t have any success welding a nut onto the stud. After multiple attempts I gave up as at that time the weld had stuck to the hole making it impossible to get the old stud out.
So I need to drill, tried that as well but quickly realized I can’t do it with a handheld drill as my first attempted hole veered off.
I’m thinking I need to first fill up the hole by weld using a cast iron rod and then re-drill it using a drill press. Any better suggestions?
The stud hole on the other side goes straight into the water jacket so I’m thinking I can drill the hole straight through. Would you guys try to just tap it with a 5/16 tap or use helicoil or similar?
Also while I’m at it, do you suggest I weld the exhaust crossover shut or will the gasket be enough to seal it for my RPM Airgap intake?
Update. Unfortunately I didn’t have any success welding a nut onto the stud. After multiple attempts I gave up as at that time the weld had stuck to the hole making it impossible to get the old stud out.
So I need to drill, tried that as well but quickly realized I can’t do it with a handheld drill as my first attempted hole veered off.
I’m thinking I need to first fill up the hole by weld using a cast iron rod and then re-drill it using a drill press. Any better suggestions?
The stud hole on the other side goes straight into the water jacket so I’m thinking I can drill the hole straight through. Would you guys try to just tap it with a 5/16 tap or use helicoil or similar?
Also while I’m at it, do you suggest I weld the exhaust crossover shut or will the gasket be enough to seal it for my RPM Airgap intake?