all the ss/sc have the front mount heat exchange for the core of the intercooler. basically a water to air intercooler, cooled by antifreeze. in order for this to work there has to be a pump moving the antifreeze throughout the system, which is usually diffrent for the normal cooling system. now the question. what size pump do we use and how fast does it flow?

 

It's in a seperate circuit. I don't know if there is a pump tho.. Maybe it just work because hotter liquid goes up and sucks in colder liquid, I don't know...

 

Seperate coolant system with an electric pump.

 

INTER/AFTERcooler same damn thing.

Not to get ahead of you, but I am pretty sure the intercooler system on your car is very efficient and probably does not need to be worried about until after 300+whp.

Part of GM's proposed stage 3 was to have it pass through the intercooler twice before recirculating.

 

The intercooler uses conventional coolant in a separate sealed system from the engine cooling system. The intercooler system has a radiator, a reserve tank/filler neck, a pressure cap, attaching hoses, and a pump capable of a 26 liters (7 gallons) per minute flow rate. The pump is commanded ON, by the control module, whenever the engine is running.

 

Yea, the intercooler has it's own pump. If you look at the filler neck while your car is running, you can see the water circulating pretyy good.

 

finally someone gets to the point of the question. thats what i needed to know. thanks

 

Has anyone tried using Water Wetter or Purple Ice etc in there and dyno'd for gains??

 

I have a rockcrawler that we installed one of the very first supercharged 2.0 crate motors into in Dec 04. It was the very first running standalone in the US as far as GM was concerned and quite a *itch to get running as we were the true guinea pigs.

Now comes a problem...during the build, the GM guys explained that the aftercooler itself did not have an internal pump, therefore we'd need to install a remote pump of our own, which we did. The pump failed recently and I was getting ready to replace it when another competitor explained how he did not even have a pump, that there is an internal one inside the aftercooler unit to circulate the coolant.

Looking carefully at the aftercooler, I cannot figure how in the world they would do an internal drive system so it does not make sense to me. In a standalone system, without the factory heat exchanger and reservoir, I only have the engine mounted factory aftercooler unit and my own fan cooled cooler and reservoir. I am still assumiong the other competitor was incorrect and I do need my own pump. Can anyone clarify this?

 

there is no bilt in pump....its a stand alone pump that you can see if you crawl under the car. you can see the black hose's runing to and from it.

its always on and flows a good amount....i dont think anybody is makeing enough boost to need a new pump yet. i would only recomend replaceing the pump/re-working the flow lines if you auto-x or somethin like that where heat soke is a problum.

 

Thanks 06Black...that answered that question of whether it is a standalone pump. Now I need to try to figure the GPM of that pump so I can get something equivalent. Again, this is on an eninge in a rockcrawler so I don't have the factory Cobalt stuff, only the crate engine.

Thanks again...anyone with info on GPM flow would be a great help. I'm using -8 lines to plumb it all.

And, anyone with a recommendation for a brand/style/link for a decent pump?