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X 2 for the grease gun trick.
Even if that doesn't work first time, pointing a welding torch at the cylinder whilst it's pressurised has always worked for me. just make sure that you're not in the firing line when the piston comes out like a 7/8" diameter steel bullet; I nearly collected a Darwin award from this when I was an apprentice -the piston ricocheted around the workshop for what seemed an age.
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Location: Cheshire
Car type: Race Ulster, 1926 Special, 1927 Chummy, 1930 Box
05-09-2019, 03:48 PM
(This post was last modified: 05-09-2019, 03:49 PM by Alan.)
I can’t wait to try that. It reminds me of when, years ago, I used to be in charge of an experimental workshop. The guys made a gun out of steel tube, an ignition coil and welding gas. I had to stop them when we started to get bullet holes in the roller doors.
Alan Fairless
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I have had good results from stainless liners but [as usual] beware cowboys. Lined ones are resistant to seizure; other measures useful for cars left standing are a dehumidified garage and use of silicon brake fluid. Having said that,my next A7 build will have cables!.
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Possibly Richard but the reasons not to use silicone brake fluid are legion. Just about the only thing it has going for it is flow at ultra-low temperature which is why the US military insist on using it. But it's been a while since I heard of anyone driving an Ulster at -40C...
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Location: Cheshire
Car type: Race Ulster, 1926 Special, 1927 Chummy, 1930 Box
Well, the grease gun shifted the seized pistons. The bores actually don’t look too bad. I might try them with new seals and see how I get on.
Chris, our mutual friend who says he knows a thing or two about brakes, reckons dot5 rather than silicone.
Alan Fairless
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Car type: Race Ulster, 1926 Special, 1927 Chummy, 1930 Box
No, it’s brain fade. I think I meant dot4
Alan Fairless
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Brain fade beats brake fade!....possibly....
Yeah, DOT 4 - just remember to change it every couple of years.
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But dot 5.1 is high performance std fluid for abs systems
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06-09-2019, 10:35 PM
(This post was last modified: 06-09-2019, 10:36 PM by Chris KC.)
Sebring, how does that relate to Austin Sevens with Morris Minor wheel cylinders?
edit: or are you confusing DOT 5 & DOT 5.1? They are entirely different (and incompatible) materials.
