Question about water temps [Merged 5-8] temperature coolant running

[dsmtrance]

What is considered getting too hot? I have heard diff. #'s. I ask b/c I noticed that my car got up to 212 at idle last night after a few hard runs (check out my other posts for more info on my car's rebirth!!!). At a "start-up" idle it'll stay between 194-197 though. FYI, I have a 16psi rad cap, 180 deg. therm, 12" 1400cfm rad fan, and a Fluidyne rad. I'm just wondering what would cause it to run hotter at idle like that (didn't before with the RRE kit....has the IRC street kit now). Any ideas???

 

[underradar92]

Some friends have reported seeing just such a setup (on a DSM, coincidentally) at a track day a few years ago. The owner claimed it was quite effective. I had considered installing a motorcycle radiator in the SMIC location, fed by the hot side line from the turbo. Then I figgered I wasn't going to make enough HP to warrant a frontmount anyway, or ever delete my beloved A/C. If anyone has tried this I'd like to hear how it works, conversely, if anyone wants to try it, I want full credit for the idea.

 

[Greg Collier]

The rear radiator is a RRE trick that worked pretty well...

 

[RusherRacing]

Thats different than how I have mine mounted. Mine is completely under the rear pan. I might have to remove the rear bumber cover and get some good snap shots of it. It is mounted where you would typically mount a license plate.

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[GreenGSX]

Back when I had the big FMIC on the car I used to spray water on the radiator and inter cooler. Basically I had a pair of pumps. One for water injection and another to run the rad/FMIC sprayers. I used a 5 gallon tank strapped down in the back to supply everything. It worked great until the pumps gave out without warning and I popped a head gasket. I now use a VR4 windshield washer tank and pump to spray my Supra SMIC. Its triggered off a boost switch plumbed into inter cooler pipping. Between the shurflo pumps and a stock washer bottle pump I would go washer pump. The shurflo pumps have not been very reliable for me.

If you are going to spend a lot of time road racing you're going to have to seriously think about a big SMIC, a v-mount FMIC, or some sort of "work-around" like the water spraying I mention above. As you know I went to the Supra SMIC which is working out for me up to about 18psi/350ish Hp. To get more I would have to go back to water/meth injection.

 

[Greg Collier]

Thats different than how I have mine mounted. Mine is completely under the rear pan. I might have to remove the rear bumber cover and get some good snap shots of it. It is mounted where you would typically mount a license plate.

That's sweet

 

[Talontsi150]

My cooling temps are running extremely low. Around town it runs about 178 -80ish. Once I hit the freeway, temps drop down to 156-60ish. I watch my temp gage go from midway to right above the C sign. I have a new 180 Stat in there. Any reason for this????

 

[TSIMonsteR]

WOW! This is a first, most of the time people are complaining about overheating!

I'd definately suspect the thermostat. Check it, and if it is stuck, replace it with an OEM one.

 

[Talontsi150]

Ok, I'll try a new OEM one. But if the thermostat was stuck, on startup wouldn't I see the water moving from the water pump pushing it with the water cap off?

 

[andymoraitis]

It's possible that it's stuck partially open. Drop in a new 180 and see what that does for you.

Keep us posted,

Andy

 

[Talontsi150]

Ok, cool Thanks TsiMonster & Andy!!! I'll stop by the local Mitsu after work and pick one up....



Marc

 

[TSIMonsteR]

Look at it this way, if that isn't the problem, you'll have an extra!!

 

[Talontsi150]

Well yeah I'll have any extra 1, but if that not it, then I will be forced to go back to my stock radiator My A/C has never blown so cold!!! Laterr

 

[siceclipse]

this thread makes me laugh
you kinda lucky bastard!

 

[JayRolla]

I average between 210-220. Cant get them to lower either and I have new koyo radiator, full rebuilt motor and new thermostat. Fan kicks on fine. The car seems to run fine though

 

[oldman]

My cooling temps are running extremely low. Around town it runs about 178 -80ish. Once I hit the freeway, temps drop down to 156-60ish. I watch my temp gage go from midway to right above the C sign. I have a new 180 Stat in there. Any reason for this????

450whp I would double check the engine coolant temperature sensor.

 

[andymoraitis]

450whp I would double check the engine coolant temperature sensor.

I can't stand when I miss the obvious crap...ugh!

 

[bullettdsm]

?? I suspect gauge or sensor on this one. Did you put in a new gauge?

MB

 

[Talontsi150]

Hey guys,


The problem is fixed. Yes it was the thermostat, I pulled it out the car and it was bent to the left and open.... I'm reading off the AEM Software for my temps. Maybe AEM is wrong. But when I turn on my heater, its warm which i know its getting water from the Motor...

I went to Napa and they gave me a Stainless Steel thermostat 180 temp, life time warranty. I have never seen a thermostat made so well. Napa also assure me that it will never rust!!.

 

[andymoraitis]

Good deal,

I'm glad the easy stuff I missed didn't matter!

 

[Talontsi150]

Now I will go out and look for a new Engine temp sensor.... It maybe wrong... But now I do have a steady temp on my stock gage and Aem... So basicly I should be looking for 200+ water temps? Also I'm running 2 Flex a lite's fans, one 12" push and one 14" pull on a Koyo radiator....

 

[oldman]

Can I borrow your defective thermostate?

 

[playitlouddsm]

Ok i've read and read and read and have done just about everything i can think of to keep the temps down. Yes the car has an FMIC on it. I have, replaced the radiator with a koyo unit, water pump has 5,xxx on it, 1.3 bar cap, 30/70 mix, wired both fans to run at all times, boxed in the space between the fmic and radiator. A/C core is removed, also i've heat wraped the manifold. What is left? Should i look into an external oil cooler? Right now the temps while cruising are 200-210 and at idle will climb up to 213. Oh yeah compression is 190+ on all cylinders. And i have cut more air ducts in the front facia to get fresh air to the radiator. Any other ideas would be great.

 

[playitlouddsm]

Just to update, today i decided to take a shot at putting a 170 thermostat in. I know that they don't make your car run cooler, they just delay the time the car gets too hot. We'll i put that in and now the car runs from 179-186 so i know that the thermostat did something. This is after 30mins of driving too. Hopefully my high temp problems are over with now.

 

[JLangevin]

Hey Marcus, its Jason with the Orange 2g. You can borrow some of my heat if you like, . Im running 210-220ish. I dont know if the sending unit is right, but the logger shows those temps. Might have to see what I can bribe you with to help me figure it out, ;-)

 

[91-gsx]

this same thing use to happen to me. i use to take the car out for a while do some pulls and the needle would move towards the middle between C and H. then when i would cruise it would sometimes drop all the way down to the C again, the car was getting colder faster then it would get hot. now i am not trying to jack this thread but i was planning on replacing my thermostat anyway. i have dsmlink and i read that you can adjust for different thermostat temps, if this is the case should i get a lower then stock degree thermostat? if so, how low? i heard that if you run the lower thermos then you can usually up the boost and run more timing because of the drop in temps. what i am trying to ask basically is what are the benefits and downfalls of running lets say like a 160* thermo? what is stock again, 190* or something?
thanks for the help, and if this conflicts with this thread in any manner i will be more then happy to start another thread.
later