CZLN6":267vp1kh said:
Howdy Ryan and All:
"What causes that (carb icing) and how likely will it happen to a weber 32/36?"
Carb icing happens when cold, moist is drawn into the carb. The wind chill effect of that air being drawn into the carb throat caused is to turn the moisture in the air to turn to ice.
How likely on a Weber? It will depend on several factors. What type of air cleaner are you using, what is happening to your engines heat. Are you driving or idling your engine on warm up. Are you using an engine preheater?
"This is part of the reason i mentioned using the hot water choke off the Hollet 5200."
The hot water piped to the base or choke of the carb is there to maintain warmth to the carb. That warmth would be important on a cold moist day
"It'd warm the carb up faster than how it is now."
It wouldn't warm the choke up faster than an electric coil unit but it would maintain some warmth to the carb after the engine reaches a high enough temperature to open the thermostat.
The FOMOCO factory solution to heating a cold carb was to induct hot air off the exhaust manifold in through the air cleaner. They added an air cleaner that plumbed hot air to the carb when it was cold and cool outside air when it was hot. It was the best of both temperature conditions. If I recall correctly I think it was called "Climatic Control".
Are you sure that your electric choke heater element is working? FYI- your aluminum adapter is very efficient at warming and cooling. Much quicker that other materials around your engine so it will be more likely to show condensation.
You seem to like the idea of running a heater hose next to your carb. If it will make you feel better do it. It probably won't hurt anything.
Adios, David
Oh ok that makes plenty of sense.
Ok so my air cleaner is the big chrome round one you'd see on a V8, maybe a 1.5" height to it. So no preheater, im driving it during warm up. I let it idle for about 2 mins before driving it.
So i worded what i said about warming the choke up quicker, i meant the carb itself. The hot water off the engine would get the carb (not the choke) hot faster than just the engine driving around and having the electric choke warm it.
I actually have a 289 air cleaner that on the snorkel has a side piece that i believe goes to the exhaust manifold. I thought that was for smog actually, which is why ive been looking into making a snorkel without the weird side pipe to it.
Yes my choke is working properly. I've been checking it a lot lately and have been having to increase the richness a lot over what I've previously had it since it got so cold here in the mornings lately.
I've just been playing around with the idea of using that hot water choke. Like it makes sense that it'd heat the carb itself up faster than just havjng the engine heat the carb through conduction. Plus, like you said it'd stay open a little longer when its hot, b/c this choke closes quickly since it got cold when i cut the engine off. Then in the summer, it'd help keep the carb cooler since it's drawing heat away from it too, right? Sorry, im taking fluid dynamics in school and im trying to use what I've learned there on my car. To me it seems logical to use the water choke. But give me your opinion. And why or why not you'd use it. You probably have experience with all this, while I dont.
Thanks a lot David,
Ryan