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Blacksmithing and Metallurgy Hand-wrought manufacture of metal objects, extracting metals from their ores, or purifying metals and casting useful items from the metals.

Blacksmithing and Metallurgy

Piston Rings - Dura-bar


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  #1  
Old 11-06-2015, 06:23:28 PM
Wayne Riedlinger Wayne Riedlinger is offline
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Default Piston Rings - Dura-bar

I want to make piston rings for an old engine I am working on, a 6 cylinder Pontiac. after talking to several machine shops I was told about a product called Dura-bar. It comes in several different grades. It was suggested I use the 65-45-1 which is a ductile cast iron. I was also looking at a Gray G2 product Has anyone have experience with this stuff. I have quite a bit of material we made rings for a Rumley years ago but it is far too big and I just had it poured in a foundry.I know I can buy rings from several places but I am looking at the option of making them myself.
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Old 11-06-2015, 06:32:01 PM
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Wayne A Thackery Wayne A Thackery is offline
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Default Re: piston rings.-Dura-

Wayne,

I have used old cylinder liners to make pistons rings out of with great success! Just a thought...
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Old 11-06-2015, 06:52:26 PM
Wayne Riedlinger Wayne Riedlinger is offline
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Default Re: piston rings.-Dura-

Thank you Wayne, its good to have options.
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Old 11-06-2015, 10:16:43 PM
Ironsides Ironsides is offline
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Default Re: piston rings.-Dura-

Wayne,I seen an old club member make them out of good quality cast iron pipe I had a doctors appointment so couldn't stay to see how he done it---perhaps you could Google it and see if anything comes up,good luck Norm
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Old 10-29-2016, 07:26:14 PM
Harvey L. Harvey L. is offline
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Default Re: piston rings.-Dura-

Quote:
Originally Posted by Wayne Riedlinger View Post
I want to make piston rings for an old engine I am working on, a 6 cylinder Pontiac. after talking to several machine shops I was told about a product called Dura-bar. It comes in several different grades. It was suggested I use the 65-45-1 which is a ductile cast iron. I was also looking at a Gray G2 product Has anyone have experience with this stuff. I have quite a bit of material we made rings for a Rumley years ago but it is far too big and I just had it poured in a foundry.I know I can buy rings from several places but I am looking at the option of making them myself.
I need rings for 25 hp Reid. Can you help?
Harvey Sorensen

hms793@hotmail.com
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Old 10-30-2016, 11:13:28 AM
Wayne Riedlinger Wayne Riedlinger is offline
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Default Re: piston rings.-Dura-

What size are the rings you need?.
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Old 10-30-2016, 02:37:20 PM
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Default Re: piston rings.-Dura-

Our sponsor: http://www.ringspacers.com/
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Old 10-30-2016, 11:43:13 PM
Harvey L. Harvey L. is offline
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Default Re: piston rings.-Dura-

I'll pull the piston out and get back to you. I believe they are 9.5 inch.
Harvey
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Old 11-06-2016, 07:51:48 AM
Wayne Riedlinger Wayne Riedlinger is offline
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Default Re: piston rings.-Dura-

Good sized rings. I think your best bet would be as Harry said -ringspacres .com. to make rings that big would take a bettor lathe then my Chinese 12 inch.
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Old 11-06-2016, 09:58:50 AM
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Default Re: Piston Rings - Dura-bar

There are many many steps in making rings that work. One of the most critical is the heat treatment of the blanks then the sizing operation heat process that is crucial. I'd forego the headaches and just buy them from Otto. Why make them three times when you can just pick up the phone.
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