Catalytic Converters

[jimoshel]

Any one know off hand what was the year Jeeps first come out with Cats? :dunno:

[kro10000]

Erm well not sure if this helps, but you started seeing them in the mid-late '70s

[HOrnbrod]

They were mandated for all new US domestic vehicles in 1976, and Jeeps were no exception so I'd say then. But some of export countries didn't mandate cats until the early 90s, so a bolt-in resonator was available form the factory. :smart:

[glundblad]

I had a 1975 Chevy Monza with a cat. Anyone remember the Monza? It was thrill in snow. :ack:

[mvusse]

I had a 1975 Chevy Monza with a cat. Anyone remember the Monza? It was thrill in snow. :ack:

 

Oh yeah. While taking a forced 4 month break from college in 92 I got a job rust proofing cars and doing miscelaneous mechanical work for the owner, including work on the owner's Monza. Worst POS Chevy I've ever seen.

[whowey]

They were mandated for all new US domestic vehicles in 1976, and Jeeps were no exception so I'd say then. But some of export countries didn't mandate cats until the early 90s, so a bolt-in resonator was available form the factory. :smart:

 

Weren't light trucks subjected to a different year?? Seems like it was a couple years later for trucks.

[HOrnbrod]

I'd take a Monza any day over a Chevette. That was the worst POS Chevy ever made. What did it have, about a one liter engine putting out 40HP or so? :ack:

 

Weren't light trucks subjected to a different year?? Seems like it was a couple years later for trucks.

Could be. I thought 76 was the mandatory year for all US domestic vehicles. Maybe some cars had cats earlier than 76? :dunno:

[mvusse]

Some 3/4 ton and 1 ton pickup trucks were exempt through at least 78.

[jimoshel]

Checked. My '77 J20 with original exhaust is cat free.

[mopwrd340]

converters were being put on cars starting in 1975 trucks had none if they were a certian gvw. the little red express made it till 78 without one i had a 76 cordoba that came without them it had a 400 hp with duals on it . i remember having the exhaust replced and he kept telling me it came wih them then i rembered the sticker on the door said non catalyst he looked at it and said no problem. :idea:

[jeepdoggydogB]

I had a 1975 Chevy Monza with a cat. Anyone remember the Monza? It was thrill in snow. :ack:

Yes, remember the V-8 Monza? My brother converted a 1976 Vega to a V-8 with the V-8 Monza donor. :ack: