I'm an idiot and sheared one of the studs on my Racing Beat presilencer when I pulled the exhaust at the track a while ago. The stud is sheared about 3/4" from the gasket surface.

Any idea how to repair this? I have a feeling the 'stud' is actually just a bolt with it's head welded to the opposite side, which means I can't simply replace the stud.

Anyone ever had to tackle this repair?

 

I did the same thing when I installed my RB presilencer new, I hardly put any torque on it at all and it gave way, well before I had a tight joint. I fixed it by leaving the first nut in place and adding a second one, which I torqued down VERY CAREFULLY to tighten the first one. This is still working even after I reinstalled the RB system in another GSL. However it would be nice to know what can be done if my repair ever quits, short of buying another presilencer.

I thought I should give RB a call on this issue, those studs aren't very good and like you say, they are welded into the presilencer so it's difficult or impossible to replace them.

 

Cut it, drill it out, and then use a new bolt, washer and lock nut?

 

Took mine to a machine shop, $20.00 to drilled and replaced.

 

They are reparable. I fixed mine. Hand drill, dremel with cutting disc, patch panel of steel from a 4" pipe of similar dimensions, cheap welder, some time, and a bolt. Now it's in the Cosmo working fine.

 

Interesting... so on the other side of the flange is a hex head, which I can drill and tap through?

 

My memory of the inside is fuzzy but I think it was a round headed specialty bolt. No matter because I was able to make a hex head bolt fit and it turned out perfect. The threaded and non threaded parts worked out exactly the same length as the RB bolt. If you didn't notice the patch panel, you'd swear it was never repaired.