Ih8exhaust

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yooper

yooper

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I have a 12/89 FJ62 with a custom exhaust system that's about 2 years old. It uses the stock downpipes and then a cobbled together y-pipe and then new stuff behind that.

I blew an exhaust gasket a week or so ago (the gasket between the
exhaust manifold and the down pipe). I decided to replace both for
good measure and seemingly fairly easily installed new OEM gaskets just now. Apparently I don't know my own strength, as I cracked the downpipe right next to the flange as I was tightening the nuts, so now I have a brand new, nice big exhaust leak right there. :crybaby: :o :doh:

Question: I'm going to try fix this myself. Does anyone know if
this is a pretty standard size flange/downpipe that I can find at
Napa or order from someplace like Summit? My exhaust is all welded together, so I'd have to drop the whole thing to measure it, which I will do if necessary. If I can't get a part, I'll just weld the crap out of this one to patch it.

Having an exhaust leak right next to the engine is kind of
interesting. You can really hear what is going on in there - I can
tell when the ECU changes something and can hear very clearly when
there is a little stumble or misfire...
 
Im sure that if you can weld you could probably just chop off the end thats cracked and weld up a new flange, im sure that NAPA or someone would carry a flange that would fit. Id just run down to the parts store with some measurements and see what they have.
 
Yeah, pretty much my plan, but I predict blank stares and unavailable parts at the Napa counter. I was hoping for a part number or advice that a 'standard GM 2.5" flange' or something would fit...


I think I'll just hack it off and bring it into the store to match. If I can't get a new flange, I'll try to repair this one...
 
If it was me, I would just go to the place that built my exhaust and have them do it. Unless it is all bolt on and I guess thats what you are after. Take it to a shop anyway its way too damn cold up there to be fooling with exhaust, even in your heated garage.

Dunbar
 
Dunbar said:
If it was me, I would just go to the place that built my exhaust and have them do it. Unless it is all bolt on and I guess thats what you are after. Take it to a shop anyway its way too damn cold up there to be fooling with exhaust, even in your heated garage.

Dunbar
Click to expand...

Me too, I would definetly get the help of the shop that built the system.
 
Dunbar said:
If it was me, I would just go to the place that built my exhaust and have them do it. Unless it is all bolt on and I guess thats what you are after. Take it to a shop anyway its way too damn cold up there to be fooling with exhaust, even in your heated garage.

Dunbar
Click to expand...


Yeah, well, they went out of business...:doh:

I'm kinda done with having someone else do my exhaust work - those guys charged a lot and didn't do that great a job. I have a welder taking up space in my garage. It's about the simplest system on the whole truck. How hard can it be? If Napa doesn't have a flange for me there is a small exhaust shop in town that might. I might just let them fix it, too I guess. :bounce:

Cold, schmold. Maybe if you're from Houston. :D

It's like 20 degrees out and sunny. It's about 50 to 55 in the garage, juust right for wrenching....
 
Ended up hacking a piece of the system off right in front of the y-pipe so I could get it out to work on it, then just welded the flange back onto the stock pipe, which actually is in pretty good shape. Tomorrow I'll hit Napa for a 6" piece of 2" ID pipe to sleeve repair where I cut it and just slap it back together, welding the sleeve on. Should hold long enough for my purposes...;)
 
Used exhaust pipe is about the hardest thing there is to weld - thin & corroded, mostly. If you can get good penetration without burning through you're way better than me. I know a couple excellent exhaust guys & I love to watch them work.
 
I think I just got lucky. This Toyota factory exhaust pipe is good stuff. It wasn't too thin at all - I'm surprised it broke frankly. The pipe separated right at the flange. I think maybe it had quite a lot of stress on it from the way the previous exhaust guy welded it up...I'm going to bolt it on before I weld it back together and try to make it all neutral, then weld it in place...
 
Clean it up real good, obviously.

By the way, I like your avatar! My 1st paycheck job was in a Piggly Wiggly. I've been to Marquette a couple of times during spring break back in college (by the same name).

And like my buds & I used to say, "Piggies go to Market" 'cause the co-eds there were a little chunky back then.
 
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