hello fellow turbo people. id like to discuss something with you guys. I am planning a pretty gnarly track build for my fiancé and I to race. here is a basic list so we are all on the same page.

gtx3076 around 10-12psi for now.(obviously more later)
custom elt mani
stock intake 74mm tb
stock motor. possibly head work
custom vmount setup. with oil cooler


my main question is cooling. I am no stranger to the s2k, my current car makes 680rwhp blah blah... shave and tucked. blah. For this track build I am going to have to take a serious look at both water and oil temp. I am wondering if there is a "limit" or a point where you have TOO MUCH coolant. Obviously weight is an issue but I want to try and build a track worthy turbo car that I can run the piss out of and not worry about heat problems. I have not taken measurements on rad size quite yet this is simply a convo to try and figure out what is too much. My thought was to build a custom vmount rad and mount a separate "tank" on side of the bay that has the rad cap on it for both bleeding and the added volume of coolant. Since this is a stock motor with stock sleeves I assume I can run a big % of distilled water and water wetter (and a hint of antifreeze of course).

can anyone shed some light on the subject? I realize this may have better luck in the racing section but I thought I would try my luck with my fellow turbo dudes first.

 

Unless you know how to fab all the stuff yourself, why noy go with a proven setup like the SOS vmount system? Its pretty much a dual pass radiator and vmount intercooler already. I can tell you will runs much cooler

 

I will be building everything that I can for the car. #1 I'm not going to pay their stupid high price and #2 that still didn't really help me with my question

 

I went with a cheap speedway dual pass radiator (26x19 - core 20.75x18.25) and ~94 taurus fan. It takes a bit of space, and I had to make mounts and change the inlet/outlet on the radiator, but this seems to work so much better than the factory system does.

I don't track the car, so the only comparison I can give is my worst heat condition while driving (30+ minute freeway driving with the a/c on going about 75mph - rpm steady at around 4000). On both the oem radiator and a mishimoto 3-core I bought later, I was seeing ECT temps stabilize at about 217-218 on a mid 90s day.

It hasn't been mid 90s here yet, but I have driven around testing with the same situations (except temperature being around 87). With the taurus fan on low speed, the ect stabilized around 207-208. With high-speed on the temperature dropped to about 196. I have not tested the cooling with the a/c off.

Thats about the best data I can give without it getting hotter outside. I can't help answer the question of coolant capacity though.

 

Countless amounts of turbo s2000 owners have tried to track their cars. 99% of them have all failed. The key is you must have a vmount intercooler and radiator setup with a huge oil cooler.

You have 3 things to worry about. Engine bay heat, water and oil temps.

I would love to see people start successfully tracking turbo s2000's.

 

Lol my half size dual core rad in my car has never gone above 201 in 80+ deg weather sitting in traffic. It's a pathetic setup but it works for now.

Like I said, I want something a bit different and test the boundaries of what this thing can do. Top fuel does it make makes 700hp so I know it can be done. Just a matter of testing and such. Somebody out there knows this stuff.

 

You need NOS. Two of the big ones.

 

I am in the process of making my car "track ready". So far I have a Full Blown radiator (not the greatest, but a vast improvement over stock), a vented hood, twin SPAL Extreme 12" fans, and a 25 row Setrab oil cooler. My water temps peak around 205 or so, oil was hitting up to 280 but that was before the oil cooler. I have an event tomorrow so I should have better data then.

 

It seems like you already know what you want to do. I don't think theres such a thing as it being to heavy because of too much coolant. The SOS V-mount design is exactly the setup you want to build. If you know how to fab it up yourself, just copy their design and it will work out fine. I have their setup, but i don't have an aftermarket oil cooler. I've done a local lapping day at our track near me, and my car runs much cooler than it did before, Oil temp wise and water temps wise. Of course it is a small track, but still, its running cooler than it did before.

The SOS kit come with the dual pass radiator, v-mount intercooler, and a separate tank to fill/feed coolant to the radiator, which also hold more coolant/water as well.

It will probably be cheaper for you to just copy and build it yourself rather than come up with all new dimensions.

I'd imagine if i had an big oil cooler i would run even cooler. But I don't track that often, and I didn't want more places for oil leaks to occur.

 

I just went to my first track day this monday, I did NOT take my car, but rode with a few people, mustangs, vipers....I'd like to give it a shot, but am afraid of the same things people have spoke on here.

I am not going to completely re-design my setup for the track, but I would like to add an oil cooler, I deleted my stock oil "warmer" a few years back.

Anyone here recommend anything that works well and reasonably priced?