Rusty Triumphs in Scotland

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Re: Rusty Triumphs in Scotland

Post by Hooli »

If you're honing the bores then stick new rings in. I can't believe they'd cost much.
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Re: Rusty Triumphs in Scotland

Post by captain_70s »

They are cheap but my concern is that new rings will be mullered by the lip at the top, the old ones are worn in with it so to speak.
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Re: Rusty Triumphs in Scotland

Post by Eddie Honda »

That's what stepped top rings are for

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Piston rings 4 by E Honda, on Flickr

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Piston rings 5 by E Honda, on Flickr
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Re: Rusty Triumphs in Scotland

Post by Hooli »

^^ That and/or the lip is the bit of bore the rings don't reach anyway.
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Re: Rusty Triumphs in Scotland

Post by fried onions »

I used Cords stepped rings when I rebuilt my 803cc A Series. Also sometimes known as ridge-dodgers. It was a successful engine and didn't use any oil or smoke. But I had the block inspected by the machine shop of course, in order to check the bores first. They were within tolerances so honed them, then I could fit the rings to the old pistons.
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Re: Rusty Triumphs in Scotland

Post by The Reverend Bluejeans »

New rings on old pistons; the trouble is, they can have too much up and down play in the ring lands and the rings become an oil pump. Especially a prehistoric long stroke thing like that.
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Re: Rusty Triumphs in Scotland

Post by Junkman »

The old rings would be much more prone to that.

Generally I'm not convinced the Scottish way of engine rebuilds has any benefits at all and look forward to have this explained. Why would one open up an engine and then not take the opportunity to do it right?
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Re: Rusty Triumphs in Scotland

Post by Eddie Honda »

Do you think he's made of money?
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Re: Rusty Triumphs in Scotland

Post by Junkman »

Neither am I. That's why I leave engines together for now.
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Re: Rusty Triumphs in Scotland

Post by Eddie Honda »

But you are Mr Moneybags in comparison. Cpt 70s can't afford a pot to piss in. He's broker than his engines. He doesn't even spunk his money away on ciggies or vape juice.

You can afford decadent Chineseium tyres and oil cans with VWs on the label.
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