How do you re thread crank case threads on a 2 Stroke Engine? Tap and Die set but I need to use the same bolt!

Question

I do know that I will need a Tap and Die set but wont that make the whole too big for the cylinder head bolt to fit properly? Right now the cylinder head bolt turns all the way in and keeps spinning and wont grab. I need to use the same cylinder bolt because it passes all the way through the cylinder into the crankcase.

Answer 1

the solution is called a "heli coil kit"
the local parts store should be able to help you. Take the bolt with you for size reference.

Answer 2

Exhaust manifolds aren't any further threaded! The cylinder head is. employ an truly sharp mechanic to seem on the problem and fix if he's prepared. some metric bolts of an same length would have as a lot as 3 diverse thread pitches. A mechanic will be able to degree the stripped holes, drill and tap to the subsequent metric or known cap-screw length. If all this merely flew over your head is very the reason a mechanic ought to seem at it.

Answer 3

If it already spins freely when compleatly inserted there is no real way to shrink the hole down to previous dimensions. In some cases you might be able to weld up the old bolt sleeve and re-drill and re-tap the hole but with long holes it might prove difficult. The trick here might be to make the hole in the crankcase the larger size and find a neew bolt to fit so both holes will accept the same size (larger) bolt.

Answer 4

Go to an automotive store and buy a helicoil kit that has the same threads you need. The kit has the proper size drill bit to use. a helicoil and and insertion tool. It's simple and makes a good repair.

Answer 5

I suggest you check out the web site SEAL-LOCK international for thread repair inserts, very reasonably priced and ideal for your application, i know i use them all the time.

Answer 6

http://www.accessconnect.com/loctite_threadlocker_.htm

Answer 7

heli-coil go with that