Cooling intake

[John S.]

What would happen if I plumbed water through the intake? Right now I’m carbutated, but eventually may go efi with the same intake.

[V8Nate]

I've thought about that too, I think it would only benefit if it was heated. I've also thought of running oil thru it from the full flow but figured the juice wasn't worth the squeeze especially if a leak ever occurred.

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[John S.]

Would this have a similar effect as cooling the inlet charge(intercooling)? I could pump it through a small radiator or a tank.

[V8Nate]

I'm sure it would help with that not with intake icing though

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[John S.]

I’ll have to bring my laser thermometer gun out with me for a cruise. I don’t think icing is an issue when blowing a turbo into a carb. Maybe I’m wrong.

[V8Nate]

Very true

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[Clonebug]

In the 7000 miles I put on my blow through carb turbo I never had a problem with icing of the intake. I drove it in temps as low as 25* F.
My turbo consistently add about 20* F. to my ambient intake temps. A little more if it's really hot out.
I've seen as high as 130* F. intake temps at cruise when the ambient temps were pushing over 106* F.
I just add a little IAT retard so it pulls timing all through the timing map when it gets too hot.....no different than if the turbo is cooking the air on boost.

As far as running coolant through the intake heat line.......I doubt it would do any good due to the volume of air that is pushed through the intake on boost and rpm. So you see a couple degrees of cooling.....the turbo can add 200* F. with high boost.
Water/Alcohol injection and if that's not enough then add an intercooler and use both in combo to keep your boosted IAT's below 130* F.

[panel]

Are you wanting to plumb warm water through to help with icing or like some TB that have warm water running through them ? Subaru's etc.

Or did you want cool water to run through to cool the charge?

If you went EFI would you go with fuel injectors by the heads or like a TBI on top of that manifold?

[John S.]

I was just asking about cooling the intake charge. Right now I’m carb’ed.

[nbuscemi]

Neat idea... the problem is that the air flow through that part of the intake is so fast and the surface area of the manifold is so little, very little heat will transfer to the passing water. This is why the volume of intercoolers are so large. It slows the air flow down and allows heat transfer.

-Nick-