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-   -   It Gets Hot (http://www.mitsustyle.com/forums/showthread.php?t=8469)

At-Least-It's-An-Evo 08-11-2005 01:03 PM

It Gets Hot
 
So after doing my headgasket a couple weeks ago, my car doesn't overheat anymore. I did beat on it a little bit before this all started happening... I'm not too sure if it got hot like this immediately after the HG was replaced. Here's the issue though and what I've done so far.

The car did sputter and stuff while I was beating on it most likely due to the MSD not being hooked up correctly so it'd cut out at 5k rpm. The settngs on the afc at the time were super rich and conservative for not having a real "tune" on the car (afc was in the ++++ in the upper rpms with 650s). I was also on 110 octane only running 14 psi. So little boost, little timing, lotsa octane. The base timing was at 5 degrees and I assume the stock ecu woulda prevented anything from blowing... maybe?

I've changed the thermostat to a 180 degree one, pretty much flushed the coolant system, got a new radiator for it, put a 12" fan on it that is always on whenever the car is, and yadda yadda.

The problem isn't while crusing or driving, it's while idling. The car will cruise at about 180 degrees, but when I come to a stop and/or let it idle for... 2 minutes? The temp gauge starts to move. It moves pretty quickly. Like let's say it's at the "E" in TEMP, it'll start moving to the "M". I've logged it with the AEM EMS and it shows that when it's at the M, it's at about 194-196 degrees. When it gets to the P, it's a little under 200. I let the car idle for about 15 minutes and it got to the P. This is with the fan blowing at ALL times. The hottest I've seen/let it get to was about 205 and on the faulty temp gauge, it is nearing the "hot" part of the gauge which makes me subconsciously paranoid as it would with anyone else. I know the AEM says it's only at about... 205 degrees, but shit, Um..... what I'm really wondering is... if my headgasket is blown again, or if I'm kinda screwed and the block could be warped. I don't feel like doing the HG again, but I guess I will if I have to. I'm more or less wondering if anyone has ever had this issue and has resolved it successfully. ANY input would be greatly appreciated from anyone.

-CP Lee

EclipseGST 08-11-2005 01:12 PM

Re: It Gets Hot
 
I'm thinking your fine and the stock gauge is screwed up. I would go off of what AEM is telling you over your stock gauge. Do you have or know of a aftermarket temp gauge you could throw in quick just to test it? If I remember correctly idle temp on a 1g is normally 210ish on a hot day. My motor runs 210-215 on average at idle in warm weather. I'd rather have it around there so I know the moisture is all boiled out of the oil. Up around 230+ in this weather is when you have to start worrying. My $.02~


Edit: Having the AFC in the +++ range in the upper RPM's would mean your flowing more than stock air flow at that RPM so your probably hitting a mild fuel cut. Think of 0 being stock. 650cc injectors are quite a bit larger so there for you have to subtract the air coming in to lean out the car. Your numbers should be in the -35% range to get ya started. Good Luck

91nbtsi 08-11-2005 01:55 PM

Re: It Gets Hot
 
double

91nbtsi 08-11-2005 01:57 PM

Re: It Gets Hot
 
Get a bigger fan Cher! Or another. And listen to the AEM temp from the sensor, not the stock gauge. I remember mine would do the same thing, the DSM temp gauge could be burried and it is still only at like 220 or something, not hot enough to screw it up big time. Remember that with a 180 thermostat, that is the temp that the stat starts to open, so it will run hotter than 180 usually.

JET 08-11-2005 02:29 PM

Re: It Gets Hot
 
Is it possible that your are putting so much fuel into it that it is starting to run hot? I would seriously doubt that the block is warped. Cast iron really doesn't like to warp. The head will warp way before the block. Did you happen to check the flatness of the head when you had it off? That could be a definate possibility.

Pushit2.0 08-11-2005 04:04 PM

Re: It Gets Hot
 
My 90 last year ran 185deg just about all the time. I think it got up to 190 some times but never over 200.

~John

At-Least-It's-An-Evo 08-11-2005 04:05 PM

Re: It Gets Hot
 
Quote:

Originally Posted by JET
Is it possible that your are putting so much fuel into it that it is starting to run hot? I would seriously doubt that the block is warped. Cast iron really doesn't like to warp. The head will warp way before the block. Did you happen to check the flatness of the head when you had it off? That could be a definate possibility.


Yep, had the head decked. It was warped concave down between cyl #2 and #3 but it was decked and it was all good. I was thinking of a buncha different possibilities but maybe i'm just paranoid. :(

My other car never got over 195 and always stayed around 190.

91nbtsi 08-11-2005 04:17 PM

Re: It Gets Hot
 
You need another fan girl. If it is overheating when you slow down, it means you aren't getting enough airflow past the radiator to transfer the heat away. If it was happening when you were hammering on it, then I would say head gasket or something else. Quit being so paranoid and put a bigger turbo on there and make big power:)

At-Least-It's-An-Evo 08-11-2005 04:22 PM

Re: It Gets Hot
 
Man, my other car never did anything close to this, but I s'pose I'll try another fan one of these days girl Burgess.

91nbtsi 08-11-2005 04:31 PM

Re: It Gets Hot
 
Quote:

Originally Posted by At-Least-It's-White
Man, my other car never did anything close to this, but I s'pose I'll try another fan one of these days girl Burgess.

Good. Glad we have that taken care of.

Enes 08-11-2005 04:37 PM

Re: It Gets Hot
 
lol...loging with dsmlink i seen temps on normal operating conditions and on hot days reach 216 easily. even with fans..
I did some testing with fans on and fans off

fans only help if you are in stop and go trafic, and below 30 mph.

anything above 40 the air is flowing faster than what fans can produce.

-E

At-Least-It's-An-Evo 08-11-2005 04:49 PM

Re: It Gets Hot
 
You can't compare 2G logger temps to 1G temps, the sensors are in different spots. 2Gs always read much hotter.

JET 08-11-2005 05:46 PM

Re: It Gets Hot
 
My 1g got really hot going to the SO 2 years ago. I think it varies from car to car and also the FMIC can make a big difference. I agree with Nate, just put another fan on it.

A//// Guy 08-11-2005 11:08 PM

Re: It Gets Hot
 
My 1G gets really hot on 90+ days but if its nice out it stays at 197 or so. Some cars are just different. Cher I wouldnt worry in your situation because your ca is not even getting hot. The stock thermostat operating range is starting to open at 190 and fullly open at 206.... so using a 180 will only open it sooner but top off is still going to be the same.

Its all in the fans you have, mine are pretty small so they dont like to keep it cool enough on hot days at stop lights.

Goat Blower 08-11-2005 11:32 PM

Re: It Gets Hot
 
My car has always run within a few degrees of the thermostat. As long as there are no blocked passages and your cooling system is good, it should always stay at the temp under normal conditions.

Have you checked your radiator for internal corrosion or corroded fins? My old stocker was missing the bottom 3" of cooling fins when I pulled it out, it wasn't readily visible in the car.

A//// Guy 08-12-2005 09:53 AM

Re: It Gets Hot
 
Everything is new in my system... radiator, 2- 9" fans, 30% coolant w/watterwetter distilled combo....

Even with a FMIC you guys say your cooling just fine in 90+ weather? My car is fine if its not humid and super hot out, but I have noticed on the freeway it stays about 5 degrees cooler so my fans arent very strong.

I have no headgasket symptoms... oil is clean, coolant is clean and not disappearing....

Swifty1638 08-12-2005 10:01 AM

Re: It Gets Hot
 
as I say..get an aftermarket gauge for it bud. We can pull the egt gauge, and the oil pressure gauge, and I'll throw it in for ya, if you'd like..not too hard. You know I am good with gauges, since I got em all..:-/

-A. Swift

Pimpin Dsmstyle 08-12-2005 10:22 AM

Re: It Gets Hot
 
who machined the head? Not all people were put on this planet to be machinists.

Ive never had a FMIC so I dont know from experience, but cant having that directly in front of your radiator cause problems with air getting past?

Change your temperature sensor?

At-Least-It's-An-Evo 08-12-2005 10:25 AM

Re: It Gets Hot
 
Quote:

Originally Posted by Swifty1638
as I say..get an aftermarket gauge for it bud. We can pull the egt gauge, and the oil pressure gauge, and I'll throw it in for ya, if you'd like..not too hard. You know I am good with gauges, since I got em all..:-/

-A. Swift

I'll get a gauge for it once I get other things figured out financially and with the car in general I s'pose.


Quote:

Originally Posted by Pimpin Dsmstyle
who machined the head? Not all people were put on this planet to be machinists.

Ive never had a FMIC so I dont know from experience, but cant having that directly in front of your radiator cause problems with air getting past?

Change your temperature sensor?


A very reputable machinist did the head. He's done a bunch of Mitsu heads before so the head being flat is the last thing I'd doubt.

As far as the FMIC being in the way... meh. It gets enough air through and my other FMIC was bigger than this baby one and never had problems.

Yes, I've changed the temp sender sensor out for a new one. The old one got all whacked out and would peg itself to HOT all the time.

I guess I'll put another fan on it and flush it. Then if that doesn't work, I'll bepulling the engine.

niterydr 08-12-2005 11:19 AM

Re: It Gets Hot
 
Its the fans cher, its always been the fans.


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