Morris Commercial Head Stud Removal.

[Mike K]

You must be pleased after the long wait. I took a Morris CS8 block to be decked and bored a few months ago, I made the mistake of telling the engine machinist "I'm not in a hurry" , I will be waiting til XMAS I think.

Interesting they helicoiled the stud threads, I think it's 12mm thread, the Morris head studs in the six cyl. CS8 are that size . 12mm threads come in three thread pitches, confusing ! metric fine is either 1.5 or 1.25 pitch.

That bracket made from flat bar , on the engine front where the pulley is on the 4 cyl. , I had one but didn't know it is a 4 cyl. part. I think I threw it out !

[Mike K]

Update: I successively removed all of the head studs in the Morris block.... around 7 years back.

I made a stud puller.. my own design. It grabs the stud low down minimizing twisting.

The trick is to heat the stud to a dull red just above the deck surface ... let it cool and apply some penetrant . Repeat at least twice. Say some prayers and go for it. A longish bar on the puller will help. Oxy Acc heat is a good fast intense heating process , you dont want to be using a little puny propane torch that will take forever to heat the stud. Heat up the stud not the block.

If the studs don't give way ... try the heat cycle again.... don't be in a rush. Try and 'feel' for the point where the stud will snap instead of coming loose , not easy to do.

As somebody pointed out..
the end of the stud may have rust and be swelled out....as you unscrew the stud it may damage the threads in the block..resulting in a oversized threads, this is a big potential problem and helicoils may be needed. We don't want loose studs.