MTFCA Forum

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

I wouldn’t - once they’ve lost the designed utility of being crushed by manifolds…. I do reuse cotter keys tho’

Not reuseable.

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.

Thanks for the confirmation: I thought they were one and done!

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

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.