I'm currently want to do a custom twin scroll top mount with the wastegates out for the dump tubes to exit out the top. I want to get as much room as possible and want to know if someone made a radiator that fitted under the frame in the front. Like where the AC condenser sits (since I'm doing an AC delete, I won't need it).

If anything, I want to know where I can GOOD radiator cores so that my fab guy can build his own that fits under there.

 

If I remember correctly Cadillac Seville and Deville with a northstar 5.0 had a radiator that was in front of the cross member, right behind the bumper. Why not just squeeze a civic radiator and fab up some brackets

 

I believe it's called a "tucked radiator" big with Honda guys I believe. If you're asking if someone makes one for the Evo application, probably not.. that I know of

 

How hard is it to fill a radiator sitting that far below the head?

 

Siracco radiators are short, fairly wide and are dual pass. Not to mention every radiator manufacturer makes a Siracco radiator because they are propular in dragsters and many other applications.

I've done what you are after in my build thread. I chose to eliminate the hood latch but you could likely make it work will retaining the latch.
https://www.evolutionm.net/forums/8842435-post46.html

 

You could always fab up a custom thermostat housing with a fill neck on top of that.

 

Check out bell intercooler cores. That's where my Fab guy got my radiator core so that he could make me a custom one.

 

Wow, that looks pretty sweet. I wonder how well it'll do for something like a road course.

Will check them out too. Thanks guys.

 

I'm interested in 03whitegsr's setup as well...

 

I have to imagine it would be marginal on a road course; it would probably work for time attack type racing though. It is thicker than the stock radiator, so the system volume is higher which will slow down how quickly things heat up. Ultimately though, frontal area will determine peak operating temps more than anything else so if you reduce core frontal area, you are likely to increase peak temperatures. It is still smaller than the stock radiator on frontal area...

I was building the car for auto-X and it was a good compromise between weight and cooling capacity.

 

I thought cbrd made a tucked set up.

You could relocate your lower brackets pretty easy for a lower radiator

Then maybe tip it toward the nose under the support

 

I knew folks that worked at Fluidyne down in Mooresville,NC. They always got calls to get custom size radiators fabbed up for race teams and what not. Im sure if you give them a call they could do something for you. I wont say it will be the cheapest route though. Even if its just a custom sized core Im sure they could handle that as well.

 

I hope people read this and get the info right. Thickness of cores matters less than frontal area. The first inch of thickness is the most effective in heat transfer to the air. No doubt there is an optimum size in terms of area that will not compromise flow rate so that the coolant has the most heat removed at the optimum rate of flow. By this i mean too large area may mean the coolant takes too long to pass through it, possibly resulting in the coolant in the block absorbing more heat. Im guessing the optimum area would be the size of the OEM radiator.

Sheesh why is everything a compromise ?

 

There are things you can do to control how fast the coolant moves in the system though so there are ways to handle the issue of coolant sitting in the block too long. You can also control HOW the coolant flows through the motor...

Agreed, thickness is far less important then frontal area if you have an issue with overheating. Things like fin count and fin design has a signifigant impact as well though. You can balance a thicker core with a more open fin pack, making the back half of the radiator more effective then if you used a dense fin pack.

Everything is a comprimise because nobody has figured out how to make Unobtainium and Perfectium materials.

 

we have done about 50 different evo radiators at this point LOL!

let me know if we can help-

cb