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What does everyone do to combat overheating in their classis SER's, i just got one for NASA/SCCA racing and have heard they have overheating problems frequently

What choo no wanna run Spec RX-7 anymore?

As has been mentioned, a larger water pump pulley will help. I have one from a Stanza on my car -- not sure what year it's from (installed by some shop in NoVa ), but it's probably bigger than the Unorthodox Racing pulley.

You can also make some kind of "ducting" to block the sides of the radiator to force air through. I have this, too. Originally made out of cardboard and racer's tape, it's now a little more permanent with aluminum sheet.

Also, a front splitter or air dam might help (I recently constructed one similar to the Paule/Kojima SE-R Cup car made out of polyethelene, but haven't raced with it). Or consider something like the one on Scott Giles' 'Teg.

 

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Re: Re: Re: overheating

Pat, that is definitely illegal in IT.

How so? It's part of the air dam and "openings are permitted for the purposes of ducting air to the brakes, cooler and radiator" in regards to the air dam, and all the ducting is attached to the front bumper. It does not "cover" the normal grill openings on the front of the car. No support or reinforcement extends "aft of the forward most part of the front fender wheel opening." Unless there's some specific wording in the rule book that I can't find, I see it as creative rules interpretation.

 

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That's very creative IMHO.

From the ITCS:
"Openings are permitted for the purposes of ducting air to the brakes,cooler,and radiator."

How would you "duct" the air to the radiator after making an opening for said ducting? If you can duct air from openings you have made, why can't you run ducting from existing openings?

I know .... it's a gray area. But I have the slowest car in ITS in the MARRS series, so I'm not really worried about anybody complaining about my car. The aluminum is easy to remove anyway.

Oh my front splitter worked wonders this weekend in keeping water temps down. It never got above 200 the whole weekend. Outside temps were in the low '70s, and I've run in similar conditions before and watched the temperature gauge climb up to 220 or so.

 

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Here are some pics of my splitter:

 

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I made it out of polyethelene, which is hard plastic like what's sometimes used for cutting boards in the kitchen. I bought a big sheet of it from a local place for about $50. I think it's about 1/4" thick.

I just attached it to the lower "lip" on the stock bumper with some bolts. Also made it so part of it extends back so I could use some holes for the splash shields.

It's very similar to the one on Tom Paule's SE-R Cup car, but his has a little more engineering into it (been sworn to secrecy on details). Mine is just a piece of plastic that I slapped on.

My problem is that the bottom of the bumper is kinda angled up, so the splitter is angled up a few degrees. Not that effective for downforce and "scooping" air, but I just wanted to run it a couple times to see if it was solid -- which it was. When I race the car again, I'm going to make some changes so the splitter is flat.