AC 2 Litre engine dismantling, part 5.
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- เผยแพร่เมื่อ 10 ก.พ. 2025
- AC 2 Litre engine dismantling, part 5.
An update on the removal of the head-studs, which I always expected to be the biggest challenge on the engine. Not for the faint of heart! Thanks to Leo for helping out.
www.ac2litre.com
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Great coverage and amazing patience and perseverance. That sheering flush is not deserved considering all the care you took. Sadly that engine block is determined to fight you all the way.
I think our old friend Chris will be able to drill it. Fingers crossed!
Great perseverance , well done
Have you a Mig welder? If so, you could try welding a washer to the flush stud and then weld a nut onto the washer and try some torque on that. The heat from the Mig weld often is enough to loosen the rusted thread. A spray of anti spatter will protect your block from unwanted 'klingons'.
Best wishes, Dean.
My engineer friend knows someone who can do that process, so it's one of our options. But he also has a suitable drill/bedplate and can probably drill it out. We shall see! Thanks for the tip.
@@ac2litre no problem. These machines need to be saved, more power to you.
Glad to see that you were able to persevere thru and get all but one off. Now it has become a man against machine to get the last one out. Try welding a nut on top of that bolt and rock it back and forth. It will take a while, but it should work.
My engineer friend has a suitable drill/flatbed, to tackle that last stud. Then he'll do the other machining work.
Get a piece of silver steel same dia as the stud, turn it down to thread tapping size by the length needed then file to spade end then file cutting edges, harden using blow lamp then peck out using electric drill 1 mm at a time. This will prevent wander that ordinary drill bits can do and the big dia acts like a drill guide.
Sometimes you just have to be more stubborn that the machine. Cheers from Iowa US
It sure is a stubborn machine!
Good work. This is unfortunately what happens when two different metals come together and react over time. Liberally coating the studs with graphite grease should help future removal.
I was thinking about what to coat them with. Thanks for the suggestion.
@@ac2litre No problem. Some would say copper ease, but that soon dries out, whereas graphite retains its natural properties.
Hindsight and all that. You needed way more heat, the aluminum block will just suck up the BTUs. Renting an Oxy/Acetylene outfit or a big propane weedburner/roofing torch would've worked, local construction equipment rental (plant hire, I guess, in the UK) should do that. Anyhow you got it done but it was a little painful watching the struggle. Good job though, your nothing if not persistent.
That would certainly have helped (an O-A torch), although we got it up to 120 deg.C. The last stud will get drilled, at the same workshop line-boring the main bearing housings... when the new crank eventually arrives!
Knock the stud In like a nail when you apply torque to the stud.
Excellent advice. Thanks.