NAPA gave me the wrong size hot air pipe for skeet's car. i could just cap off the snout on the catalytic converter and maybe route some cold air into the air cleaner's snout, couldn't i? I'm playing emissions bandit here, so that's not a factor.. i understand that in the winter he might want it to help warm up the car faster though?

No need to cap off the exhaust riser - it doesn't go anywhere anyway. It's just part of the heat sheild around the cat. Just leave the heat riser off. It's for winter-time, but a lot of soobs around here that I've seen have it off. The emissions police won't care BTW - it's not an emmissions control.

 

GD

Actually I've been given a fail slip for not having the hot air pipe

i think i got one of those doohickys on this ea82 spfi/carby motor

i got

sitting here

cool, thanks guys. i think i will cap off the cat so i don't have exhaust fumes in the engine compartment.

There will not be any fumes in the engine compartment..the tube coming up from the cat only draws air from AROUND the cat. Since the converter heats up the quickest...and gets super hot...think around 1000 degrees or so...the warmer air that gets drawn up into the air filter housing while the engine warms up to cut down on emissions. Then after the engine warms up to operating temperature...the heat riser valve on housing will close and will draw air from the snorkel instead. Just removing the tube will not cause any problems until the outside ambient temperature is near freezing or below...without the tube then it will take much longer for the engine to wam up. Anyhoo...take it easy.

It was always my understanding that the "carb stove" also kept the carberator from iceing over in the winter time. The venturi effect that carbs use to pull gas out of the float bowl, also makes the humidity in the air condense out, and then, if it's cold enough, it will completly ice over the barrel. I've seen it happen. This explains why injected engines, don't have one. They don't have a venturi.

 

Somebody correct me if I'm wrong.

 

RedLance