Carb icing

[farmo83]

It looks like I’m a little late to the game but I recently discovered Boostpower’s tech talks. In one of them they mention Carb icing on old school TT setups with Carbs? What is this and how does it work?

 

[racerden]

It looks like I’m a little late to the game but I recently discovered Boostpower’s tech talks. In one of them they mention Carb icing on old school TT setups with Carbs? What is this and how does it work?

What they are probably talking about is the carb bowls frosting up. Older Race Aero carb bowls were plumbed with inlets/outlets where some ran engine oil lines to them. Thinking was to either heat the mixtures before entering the TC's or use it as a sort of remote oil cooler. Either way it's not needed; engines love cooled fuel & by the time it hits the warmed TC inlet turbine, things disperse pretty quickly. As for the oil cooling thought, have another beer. Hope it helps...
197

 

[SoCalZero]

Here is how mine is setup with oil going through. They still get cold and frost up.

 

[oldschool]

What they are probably talking about is the carb bowls frosting up. Older Race Aero carb bowls were plumbed with inlets/outlets where some ran engine oil lines to them. Thinking was to either heat the mixtures before entering the TC's or use it as a sort of remote oil cooler. Either way it's not needed; engines love cooled fuel & by the time it hits the warmed TC inlet turbine, things disperse pretty quickly. As for the oil cooling thought, have another beer. Hope it helps...
197

So would I be better off eliminating this? I have an old Race Aero set up like this.

 

[Outdrive1]

I’ve seen that on blower set ups too. I always wondered what caused that??


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[obnoxious001]

So would I be better off eliminating this? I have an old Race Aero set up like this.

Heating the carb box was done to try and give a better cold idle quality. I didn't run mine that way for ski racing.

 

[wsuwrhr]

Icing on the manifolds are a good thing. My Vw does that especially in the winter months.

 

[SBMech]

It's a side effect from pushing fuel through tiny holes, the same principle that applies to A/C. They used to use exhaust to heat VW's intakes so they would not ice up, but everyone deletes them, so they do.

As long as it does not hamper fuel flow IMO it's not bad, since cooling mixture is the primary way to make more HP.

 

[Outdrive1]

It's a side effect from pushing fuel through tiny holes, the same principle that applies to A/C. They used to use exhaust to heat VW's intakes so they would not ice up, but everyone deletes them, so they do.

As long as it does not hamper fuel flow IMO it's not bad, since cooling mixture is the primary way to make more HP.

Like I said. I’ve always wondered why it happens. [emoji106]


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