Destroyed exhaust threads

[Mudrig150]

So should I just cut the threads off the elbow and put a flange on? I think that would relieve the leak.

[john hall]

Originally Posted by Mudrig150

They're tapped for a bigger size pipe, that's all.

OK, schools in session.
Can't really see how you can attempt to screw in the elbow, if the block has been tapped larger. The difference between pipe size OD's jumps about 5/16" for the diameter range you are talking about---that is WAY more than the minor dia of the threads. If your block has been tapped larger, that elbow should drop in the hole. Furthermore, you can't simply run the next size tap in as the hole is too small to begin with. As shallow as it is to begin with I doubt you could even drill it out, besides most homeowners don't have that sized drill bits laying around. The original was probably installed on a milling machine, possibly reamed, and the threads were probably formed or thread milled. All that said, you probably have a bad block and a bad elbow. Take a look at this link to educate yourself on pipe OD's, don't worry about the schedule sizes. Class dismissed, unless you have threads that are not NPT. We can discuss European style pipe threads if you like. Just not those weird PG European conduit threads, I've only cut those twice in the last 30 years.

https://www.benjaminsteel.com/resources/pipe-size-chart

[darkminion_17]

Originally Posted by Mudrig150

So should I just cut the threads off the elbow and put a flange on? I think that would relieve the leak.

Yes put on the flange.

[twoton]

I think you should put a stack on it. Stacks is way cool, like duals and triple wheel weights.

[finsruskw]

Hell yeah!!
Why not put duals on it while you are at it...
and...and some flames etc on the hood and side panels...
You do have a hood and panels???

[Mudrig150]

Originally Posted by twoton

I think you should put a stack on it. Stacks is way cool, like duals and triple wheel weights.

Heh, I wish. The guy who wants to trade my 1250 for his wants it nice and original, he wants to at least have the parts. Too bad I ain't got the original muffler as the entire inlet pipe snapped off when I tried to make it viable for brazing.

I do have the 1250 hood and the 1650 hood. He want the side panels so I'm giving him the 1650 panels with the junk stickers.
He does NOT want flame stickers. He's not one of those guys.

[cubs-n-bxrs]

How's about you just post up some pics. Geez you're a kid with a cell phone. Surely you know how to do the pic thing.

[Mudrig150]

I don't have any, though.

[cooperino]

Originally Posted by cubs-n-bxrs

Well Cooperino the existing threads could possibly be full of carbon giving the appearance of compromised threads. Unless you chase out the existing threads you have no idea what you are dealing with.

No sir.. LOL. I have no idea what he is dealing with because I have not seen a picture. Plus, If he can spin a correct size fitting in there and it dont grab anything.. That aint carbon issue.

[ol'George]

Without pictures it is fictional.
You can't tell me a friend can't snap a few pix he can post if he has no way take them himself.
I've been helpful and supportive, but I'm about done.
Sorry but it is what it is.