m151 nos cylinder head
 

Hi, i am looking for a nos cylinder head assy for a m151A2. found my rear exhaust flange was broken off and bolt snapped in the head holding the other side of the exhaust manifold. Any leads appreciated.
cheers, john

Can you not extract the broken bolt?
TNJ Murray would likely be a good bet for NOS M151 parts

Roses surplus up in Saskatoon used to have NOS heads back in the early 90s. Not sure if maybe Dave Good up in Edmonton ended up with them.
But I have to agree with Chris. Changing the head will be as much or more work that extracting that bolt, although by the time you get the intake off you may have more than one broken.
I usually place a washer the same size as the broken bolt or stud over the stud and fill the hole with mig weld. Then I put an oversized bt over the washer and weld it to the washer/stud assembly. As it cools, start to work the nut back and forth. If you shear off the washer/nut, then repeat the operation. It is very few broken bolts that have not resulted in successfull extraction using this method.

Hi Rob, that is a great idea. The flange on the lower side is broken, pretty sure i cannot repair that. Roses was a great place to snoop, found it way too late then they closed.

Hi Chris, u are correct but the lower flange is broken so i cannot mount the bolt to it.