I'm looking to find a high flow cat that has a two bolt flange on each end. Anyone know where I can find one at a good price?

My exhaust should end up like this:
Mac '94-'95 style headers, Y-pipe, cat, S-pipe, '96-'97 cat-back

Both ends of the cat need to be flanged with this setup. That way I can also replace it easily with a off road pipe or bullet muffler.

Does Carsound make one like this?

Thanks,
Dan

 

i had a muffler shop weld a 3 bolt flange on the end of my y-pipe so I can bolt a cat on and off for emmissions testing...they messed up and angled the flange weird so when I went to bolt the cat or "test pipe" on it does match up right and causes an exhaust leak, and a really annoying noise...so just make sure they line up everything right.

 

Thanks for the reply. I'm not an exhaust fitting expert, so this might be a dumb question.

Do muffler shops normally have the flanges that I would need to weld to the CAT or bullet Muffler?

Dan

 

yeah they usually do, if not they can order some...most parts store don't carry them for some reason

 

You'll want to go with a 3 bolt flange on the Y pipe side. a 2 bolt will usually leak like crazy. Then on the catback side, you want to use the ball and socket flange (stock setup). www.z28roc.cz28.com/Bullet.jpg
The only place that I know of that sells that part is RK sport. I'm sure someone else has them, I just don't know who. Also you could find someone with an old cat. and cut the ball off, and use that.
Summit sells 3 bolt flanges.

 

Thanks for the reply.

How come it leaks at the Y-pipe with a 2 bolt flange and not at the cat-back side?

That bullet with the flanges is exactly what I was talking about, but I think the MAC headers only have a 2 bolt flange on the Y-pipe, at least it looks that way from the MAC header pictures here: http://www.macperformance.com/store/...Product_ID=457

Did you weld that yourself? If not, where did you have it done?

Dan

 

Ok I see now what you're talking about.
If the macs really come like that on the Y pipe. Any exhaust shop will have that fitting. And yes it will work just fine. I thought you meant 2 bollt flat flange.

Yes I welded up the bullet in my garage.

 

O.k. Thanks.

Let's say that I wanted to make a bullet ORP like you have. Mine would look the same except that the 3 bolt flange would need to be a female adaptor to accept the ball of the MAC Y-pipe?

Dan

 

Yep, but you'll want to install the headers and y pipe first. So you will know exactly what fittings you need. And total lenghth of the orp.