Originally Posted by shooboy
Hi DR, I just measured the inside thread diameter on my 91 head and it measures about .400". I'd guess at the outside diameter threads on the pipe to be 11mm, that would be about a .030" thread heighth........Shoo
Your right. Its in the neighborhood of .430
My junk motor has a pipe and bushing in the .460 range
Dont know why.
This NIP pipe and muffler are for a OS 61 to 90 motor. I double checked. Its in the
.430 range so its right.
Lemme know if your interested. Id still like one of those fine hammers