Off Topic Intercooler Question.

[dr_frankenstein]

I have a question about non turbo intercoolers, particularly the ones are used under Roots blowers, these intercoolers are air to water and are usually wet / they cool a mixture of air and fuel - right?

is this correct in my thoughts? in that these intercoolers cool an AIR AND FUEL mixture?

Any input is greatly appreciated.

A.j.

 

[RUQWKNF]

They do not cool the fuel per say, but they do cool down the charge temps of the superchargers' boost.

Roots style intercoolers, as used on Ford, Mercedes and other applications are air to water style intercoolers. No fuel is ever mixed into the scenario. All of these applications have direct port fuel injectors, meaning, each intake runner has it's own fuel injector. Most of the OEM systems circulate radiator coolant through the water side of the intercooler, and utilize an auxilliary after cooler to help cool down this coolant before it makes another pass to the intercooler.

On the new LS9 Vette motor, it will utilize an air to liquid intercooler as well.
In this picture, you can see how the water is routed into and out of the ends of each intercooler core.

The charge air is blown into this chamber, and out the bottom of the intake, or vice versa. No one has shared the air flow pattern of this new intake design yet. It's probably one of those proprietary GM design secrets. Almost all of the OEM air to liquid blower setups are of this design.
Hope this helps a little.

Patrick

 

[KILL4PEACEUSMC]

Cant wait till Dexcool ruins them! Looks spendy!

 

[ct67_72]

if you were to use an air to water you could incorporate a fuel cooler. you can always use a fuel cooler anyway. since its direct port theres no other way to cool the fuel, or air fuel mix because its to close to the head. I remember my father showing me how to make a cool can years ago though with a coffee can and a coil of steel line filled with ice water.

 

[cchilly]

Yes, you are correct in saying that for a roots style intercooler.

My friend builds race engines and he just built an engine like this for a boat. He used a screw blower with EFI. Injectors on top and also at the intake ports. So the air/fuel mix goes through the blower, through the cooler into the intake plenum. It seems to work pretty good since it made 1400hp on 93 pump gas

Here is a picture of the cooler he used.

 

[dr_frankenstein]

Yes, you are correct in saying that for a roots style intercooler.

My friend builds race engines and he just built an engine like this for a boat. He used a screw blower with EFI. Injectors on top and also at the intake ports. So the air/fuel mix goes through the blower, through the cooler into the intake plenum. It seems to work pretty good since it made 1400hp on 93 pump gas

Here is a picture of the cooler he used.

Thats the one I was thinking of! The Idea though, is that it is wet flow........ I wonder if there is anything specific about the intercooler core, that allows it to operate in the A/F mixture?

What makes it different from a standard Air to Water intercooler core?

Hmm..............

Thank you all for your input!

Anyone else have any thoughts?

A.j.

 

[cchilly]

I don't think it matters about being just an air/water core.

Maybe they change the fin count. I know when taking the intercooler off there was some gas that was still in the intercooler.

I would just ask however you are looking to use for a core. Or you can contact people that make the root style ones. Whipple was the one that we used. I think BDS makes one also.


Chris

 

[dr_frankenstein]

I don't think it matters about being just an air/water core.

Maybe they change the fin count. I know when taking the intercooler off there was some gas that was still in the intercooler.

I would just ask however you are looking to use for a core. Or you can contact people that make the root style ones. Whipple was the one that we used. I think BDS makes one also.


Chris

Thanks for your input.... it has helped point me in the right direction!

A.j.