In 1992, I pulled a Dolomite 1850 apart which looks like half of the V8 engine. Same issue, all studs corroded to head. I ended up using a lump hammer and pieces of wedge shape wood. The engine was new apart for being used on a university dyno Unfortunately it had been outside and become full of water. It was destroyed by corrosion internally. I’d gathered that by the time the lump hammer came out!
These bolts are a nightmare! I had many issues with them on my many owned Dolomites! Now I am restoring a Stag and I think that I will be overhauling the engine too just to get everything ok. I do have time to soak these bolts untill they dissolve 😂, so that is what I will do! Those stud or bolt removal tool seems a good investment, so I will go for that too!
Also I would remove the engine and check all the surfaces are flat as these engines are reliable and good ONCE they have been rebuilt properly AND the mistakes made at the factory rectified
Some of the head studs are angled. You need to remove them first. You can buy like a hole saw that cuts the crap around the head studs and allows them to be removed
Yes done many , not just a stag problem , lots of other known maker engines same thing , remember these are sometimes 50 years old eventually all gaskets will fail ,, hole saw helped, but made pulling tool ,, to be fair the. Stag engine is not bad at all , ruined by no maintenance, and. Poor factory. Fitting , once put right will give years of trouble free use with simple oil changes and gravity fed header tank ,
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In 1992, I pulled a Dolomite 1850 apart which looks like half of the V8 engine. Same issue, all studs corroded to head. I ended up using a lump hammer and pieces of wedge shape wood. The engine was new apart for being used on a university dyno Unfortunately it had been outside and become full of water. It was destroyed by corrosion internally. I’d gathered that by the time the lump hammer came out!
Good job, decades back I have known those stag heads taken off in pieces. It was such a pig of a job with the corrosion.
These bolts are a nightmare! I had many issues with them on my many owned Dolomites! Now I am restoring a Stag and I think that I will be overhauling the engine too just to get everything ok. I do have time to soak these bolts untill they dissolve 😂, so that is what I will do! Those stud or bolt removal tool seems a good investment, so I will go for that too!
Yep a complete pain very bad design, try to find a set of original stud tools from Irwin as modern ones are made in china
These studs are a dowel fit and corrode to the head , very same as saab 1854cc engines , saab had a puller to remove the head
Would this puller be available somewhere?
Also I would remove the engine and check all the surfaces are flat as these engines are reliable and good ONCE they have been rebuilt properly AND the mistakes made at the factory rectified
Some of the head studs are angled. You need to remove them first.
You can buy like a hole saw that cuts the crap around the head studs and allows them to be removed
yes used to have them for my MK2 Jags, but this one was ok after i broke the seal with the wedges
Yes done many , not just a stag problem , lots of other known maker engines same thing , remember these are sometimes 50 years old eventually all gaskets will fail ,, hole saw helped, but made pulling tool ,, to be fair the. Stag engine is not bad at all , ruined by no maintenance, and. Poor factory. Fitting , once put right will give years of trouble free use with simple oil changes and gravity fed header tank ,