Copper intake/exhaust rings

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Belliott3
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Copper intake/exhaust rings

Post by Belliott3 » Fri May 17, 2024 1:12 pm

Are the crushable copper intake/exhaust rings reusable? I’m thinking not, but I’d like to be certain.
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George House
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Re: Copper intake/exhaust rings

Post by George House » Fri May 17, 2024 1:32 pm

I wouldn’t - once they’ve lost the designed utility of being crushed by manifolds…. I do reuse cotter keys tho’
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Jerry VanOoteghem
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Re: Copper intake/exhaust rings

Post by Jerry VanOoteghem » Fri May 17, 2024 2:10 pm

Not reuseable.
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jiminbartow
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Re: Copper intake/exhaust rings

Post by jiminbartow » Fri May 17, 2024 2:33 pm

No. They are designed to assume the irregularities (such as rust pits) of the surface they are pressed into. If they are rotated or transferred to a different port, the surface changes and they can no longer seal properly.
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Belliott3
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Re: Copper intake/exhaust rings

Post by Belliott3 » Fri May 17, 2024 2:51 pm

Thanks for the confirmation: I thought they were one and done!
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Les Schubert
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Re: Copper intake/exhaust rings

Post by Les Schubert » Fri May 17, 2024 3:10 pm

I have reused them when I’ve had do repairs on a road trip. The important thing is to retorque them HOT on reassembly and possibly more than once
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Ed Baudoux
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Re: Copper intake/exhaust rings

Post by Ed Baudoux » Fri May 17, 2024 7:58 pm

If they're not seriously deformed, anneal them by stringing them on a piece of wire, hearing them red with a torch, and quenching them in water. They'll be soft enough for reuse.
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Re: Copper intake/exhaust rings

Post by Steve Jelf » Fri May 17, 2024 11:11 pm

It may be overkill, but I smear some hi-temp RTV on them, especially if the engine surface has any pitting.
The inevitable often happens.
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