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I have a vm34 carb on my 76 kz400 with the 11th hour manifold.
my carb is getting super cold and idles great but when you crack the throttle it revs up and will not come back down.
after inspection the carb seems to ice over when you open the throttle and it's causing the slide to stick.
as soon as you turn it off let it set a minute and restart it it idles perfect.
you can actually see the slide slowly come down when you turn it off.
I tried bg fuel drier that is mostly isopropyl alcohol.
no effect...the carb still gets super cold.
has anyone else had this problem with the single carb conversion?
Not uncommon in draw through turbo setups, but I've not heard of it for NA engines. The problem is that I'm guessing you live somewhere humid and it's getting a bit colder. If you're looking to keep the 2:1 manifold, I doubt there's a "cure" other than waiting for warmer and drier weather.
It's why cars have hot air intakes on carbs....The drop in pressure of the air through the carburetor is the cause of it. Your air conditioner works the same way....The reduction in pressure through the expansion valve causes the evaporator coil to get cold.
It's the opposite effect of compression. The air gets hotter when compressed. that's why an air compressor output is so hot.
It's why cars have hot air intakes on carbs....The drop in pressure of the air through the carburetor is the cause of it. Your air conditioner works the same way....The reduction in pressure through the expansion valve causes the evaporator coil to get cold.
It's the opposite effect of compression. The air gets hotter when compressed. that's why an air compressor output is so hot.
That has to do with friction. It's kinetic energy.
Also, carbs get cold not only due to the pressure drop in the air, but also from the evaporation of the fuel. The more fuel a carb is asked to provide, the colder it gets. Hence my reference to draw through turbo systems.
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