Anyone make a cat bypass for a '79...?

[Holshot]

He guys, I'm looking into possibly un-corking the exhaust some on the '79 and noticed the other day while under the car she has a triangle shaped 3 bolt flange versus the square 4 bolt flanges on the '80+ cars. I saw that Ramzi sells the 4 bolt cat bypass pipes bit didn't see a 3 bolt. Does anyone know who might sell one or if anyone reading has a old stock cat and would be willing cut off the flanges so I could have my own welded up that would be great! Thanks in advance...

[Weelan]

The less proper answer would be to bust all the stuff in the cat out. Not a great idea, but if you're serious about doing it or if your cat is clogged already, it's the free answer.

I'm pretty sure Ramzi sells the 3 bolt flange, if not he'd probably help you work something out. Give them a call.

[garion]

I'm wondering about this same question also..

I'm also wondering if I can just bolt on an old model's exhaust? I would keep the down pipe, and replace everything else. I have the cat (don't need it, no emissions testing), and also the two mufflers.. the mufflers need replacing..

[paintdudeluke]

Its called a sawzall, welder and a stick of pipe for $5-, plus you need an hour to kill and a 6pak of beer. It's almost like paying somebody to put air in your tire. Everybody has a pal with a welder in the garage.

[ORFORD2004]

http://www.ebay.com/itm/Test-Pipe-Fiat- ... cb&vxp=mtr

[TX82FIAT]

I would go with the test pipe and not just clean out the brick inside the CAT. A few years back before changing the exhaust I banged screens and filling out of a partially obstructed CAT on my 82'. It was an hour of punching a rounded crow bar and picking pieces out one at a time. Very labor intesive hour to clear the CAT. In the end, the hollow CAT sounded tinny or changed the exhaust note in a manner I hated. Given the time to hollow the CAT, the health risk and poor sond from a hollowed CAT. I'd go the true test pipe route. You may also want to give some consideration to putting straight through resonator. It will be much louder without the CAT.

[Holshot]

Its called a sawzall, welder and a stick of pipe for $5-, plus you need an hour to kill and a 6pak of beer. It's almost like paying somebody to put air in your tire. Everybody has a pal with a welder in the garage.

I thought about that but didn't want to ruin the stock cat for originality if one day I ever decided to sell the car and the new owner wants it "stock". Thanks for the advice non the less!

[Holshot]

http://www.ebay.com/itm/Test-Pipe-Fiat- ... cb&vxp=mtr

PERFECT! Thanks... As it so happens those guys are practically in my back yard and I can swing by tomorrow and pick it up! I would have never imagined checking eBay or for that matter DiFatta Bros. I actually know all those guys really well as John was a good customer of mine at my old Deli and over the years with all the Alfas' and Fiats' we've owned I been there hundreds of times for parts runs. Thanks again!

[Holshot]

Thanks to everyone else that's replied as well... I really appreciate everyone's input! Gotta love the forum...

[Warren]

I have installed the 3 hole DiFatta one on Ebay and it fits fine on my 1979. The silver paint though will flake off on first use.

[cos]

http://www.ebay.co.uk/itm/201084234527? ... 1562.l2649