Broken Petcock

[megawat]

Have a 1970 Ace 100, original brass petcocks look great but leak so ordered a set of the newer type thinking the design was less likely to leak. Installed with new seals and one snapped off at threads as I was snugging it up. Looks like pot metal. Does anyone know what the original material was?
Don

[socalhodaka]

Don't matter what there made of, don't over tighten and don't try to get that last 1/4 turn because you want the thing indexed right. Take the time and sand the washer to get the extra turn.

[Darrell]

Sand down the washer? First I heard of that -- but it's a good idea.

[Bullfrog]

. . . but yes, the originals were made of pot metal.

Ed

[Modracer70]

Same thing happened to me, I drilled out the threaded and the body peices and tapped to 1/4 20 thread, center drilled a piece of threaded rod and screwed the two peices together, using locktite. Still holding, no leaks, don't over tighten.

Dave

[megawat]

Thanks guys, am back to original brass ones and working with valve lapping compound to get a smooth fit.
Don

[TrophyHunter]

I've been making slow progress on the Wombat but sanding the original washers/seals was my solution, too. Several tries but they line up well now. Not perfect, but ..............