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Old 10-17-2008, 01:57 AM   #1
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Default question on everyones water temps

um just would like to know what is everyone seeing on water temp high way and street driving..... i live in south florida and its crazy hot.

my set up is coolant reroute
custom rad... extra big
the bottom ducked not the sides or the top.. doing the top soon. the sides have too much stuff going on ( oil cooler lines, ic piping, ac crap otherwise fully loaded)..
70% water 30% coolant anti corro
ebay fans 12 inch and on all the time
30 row oil cooler
160 thermo
anyways i see like 185-195 on the street and highway 175-185
and this is just normal driving..... have not been able to go wide open throttle.... breaking in the new engine, new clutch and just got bigger injectors so i need to retune it. but will let you know what happens when i start to boost it. but just wanted to know if this coolant reroute really did anything.

sorry for all the type got carried away
thanks
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Old 10-17-2008, 08:26 AM   #2
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so its crazy hot and you are wondering if temps of 175-195 are something to be concerned about? You do realize that the stock thermostat is 195F, right?
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Old 10-17-2008, 08:32 AM   #3
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move to alaska. problem solved. better yet - move to canada.
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Old 10-17-2008, 08:41 AM   #4
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Mine hovers between 195 and 210, with occasional trips to 215.
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Old 10-17-2008, 01:46 PM   #5
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so its crazy hot and you are wondering if temps of 175-195 are something to be concerned about? You do realize that the stock thermostat is 195F, right?
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move to alaska. problem solved. better yet - move to canada.

And your temps are what? Sorry but I must have missed the useful info in your posts

Ive still got the crap stock gauge and havent got the ms running yet so i dont know about mine right now. Try using filling the whole rad with nothing but Water Wetter . It helped keep my temps on the last miata down to about 185-90
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Old 10-17-2008, 01:55 PM   #6
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break your motor in like a man, but its probably too late and your ring sealage will be sufficient, but not as good as mine will be.
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Old 10-17-2008, 02:56 PM   #7
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u are fine stop being a sissy and drive the car. God come on people we mod our cars to rape em and enjoy.
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Old 10-17-2008, 05:19 PM   #8
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And your temps are what? Sorry but I must have missed the useful info in your posts

Ive still got the crap stock gauge and havent got the ms running yet so i dont know about mine right now. Try using filling the whole rad with nothing but Water Wetter . It helped keep my temps on the last miata down to about 185-90

The useful information can easily be gleaned from my post by anyone with a brain. "Your temps are in this range which is at or below the range at which the factory thought it necessary to have the thermostat open to let cooling start." I just like to use common sense in making people see how stupid their concerns are. Thank you, come again.
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Old 10-17-2008, 06:57 PM   #9
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195-205 here, stock cooling system.
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Old 10-17-2008, 07:13 PM   #10
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u are fine stop being a sissy and drive the car. God come on people we mod our cars to rape em and enjoy.
amen!
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Old 10-17-2008, 08:08 PM   #11
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Uh....

230-250 here. I don't believe it, but that's what it says. That's with the GM coolant sensor numbers, GM bias resistance, standalone MS2 on a 99'. Car runs fine and never overheats though. But it makes me wonder. Talked to AbeFM and he said his did the same, something about MS2. So I put in his numbers for the sensor and it reads lower now. Actually reads a little too low. Need to adjust the numbers sometime. Ha, I can adjust my coolant temps....

160*F thermo is bad on your engine. Put a mazda thermostat of the correct temp in there. You want the cooling system to maintain the correct temperature all the time, not a super low one that increases engine.

And post some pics of your setup, radiator, heat exchangers, shrouding, fans, re route, etc. Not 1 phone pic.
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Old 10-17-2008, 08:24 PM   #12
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Pat, I take it you don't have an IR thermometer? I'd be curious what temps you are -actually- running, I plan to do MS in the future.
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Old 10-17-2008, 09:10 PM   #13
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The engine runs ~200*F. But for some reason MS2 reports higher values. FWIW, the sensor is in the back of the head and I have not done a reroute. So it "is" possible it's that hot back there. Sensor is dead on accurate at lower temps. Say it's 90*F outside on my digital thermometer, then Megtune will show that temp within 1 degree before startup.
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Old 10-17-2008, 09:17 PM   #14
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Uh....


160*F thermo is bad on your engine. Put a mazda thermostat of the correct temp in there. You want the cooling system to maintain the correct temperature all the time, not a super low one that increases engine WEAR.

Fixed.
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Old 10-17-2008, 09:42 PM   #15
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Fixed.
No, it increases engine!!!!11 Yeah, increases wear. I dunno why but my laptop sucks for typing. It will sometimes highlight a word while I'm typing and then when I hit the next key, it deletes the word and puts whatever key I just hit in its place. No idea why but it's aggravating.

And Paul, you're running a lower temp thermostat too I read. I'd switch to stock one if I were you.
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Old 10-17-2008, 09:57 PM   #16
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The engine runs ~200*F. But for some reason MS2 reports higher values.
I'm not trying to be an ***, just explicit; you've not yet confirmed with an IRT that it is inaccurate at higher temps?

If so, that is weird. I thought the use of GM sensors was more linear, than say the Bosch sensors. I've been told several times that I had to run another program to get the right values to the computer IF I ran a Bosch sensor. IIRC, GMs are more linear...?

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FWIW, the sensor is in the back of the head and I have not done a reroute. So it "is" possible it's that hot back there. Sensor is dead on accurate at lower temps. Say it's 90*F outside on my digital thermometer, then Megtune will show that temp within 1 degree before startup.

Tangentially speaking, this makes me wonder; Miatas' suffer with the problem of too much heat in the back of the head, and they also suffer from poor fuel pressure to the back two cylinders if you are running much more than stock HP (I forget the limit area)... Is it possible there is a relationship? Extra fuel can help with cooling for sure...

Thinking about it more, I don't think it is real likely; it seems like everyone has the cooling problem regardless of power while the fueling issue only comes on once you get up to X hp...


Hopefully I am coming up with something interesting, if not ignore me and nod your head knowingly...
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Old 10-17-2008, 10:21 PM   #17
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Quote:
Originally Posted by fahrvergnugen View Post
I'm not trying to be an ***, just explicit; you've not yet confirmed with an IRT that it is inaccurate at higher temps?

If so, that is weird. I thought the use of GM sensors was more linear, than say the Bosch sensors. I've been told several times that I had to run another program to get the right values to the computer IF I ran a Bosch sensor. IIRC, GMs are more linear...?




Tangentially speaking, this makes me wonder; Miatas' suffer with the problem of too much heat in the back of the head, and they also suffer from poor fuel pressure to the back two cylinders if you are running much more than stock HP (I forget the limit area)... Is it possible there is a relationship? Extra fuel can help with cooling for sure...

Thinking about it more, I don't think it is real likely; it seems like everyone has the cooling problem regardless of power while the fueling issue only comes on once you get up to X hp...


Hopefully I am coming up with something interesting, if not ignore me and nod your head knowingly...
No, I have confirmed what temperature the engine runs at ~200*F is the number. Thermostat is fully open by ~200*F, and it stays about that temp. Never overheats. But yes the actual "number" spit out of megatune is high. But I do believe it's wrong. Dunno why though. Like I said, perhaps that area back there is a little hotter. It's possible.

Tangentially speak? Care to explain? Speaking in a direction perpendicular to your thoughts? Or speaking in time derivatives?

Don't ASSume **** about fueling. There's more crap, rumors, and BS about fueling than there is in politics. I won't even touch the subject.

I'm nodding my head knowingly right now.
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Old 10-17-2008, 10:27 PM   #18
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Quote:
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Tangentially speak? Care to explain? Speaking in a direction perpendicular to your thoughts? Or speaking in time derivatives?
*Nodding thoughtfully* Yes.


Quote:
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Don't ASSume **** about fueling. There's more crap, rumors, and BS about fueling than there is in politics. I won't even touch the subject.

I'm nodding my head knowingly right now.



We understand each other, in a indirect sort of way...
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Old 10-18-2008, 02:02 AM   #19
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My temps "Texas" are usually 207.
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Old 10-18-2008, 03:20 AM   #20
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nods head...



Temp depends on where and how I'm driving, my thermostat won't open untill 195ish, for more info on this Joe Perez made a movie on youtube you need to watch.



*Agrees that 165 is too low, and that you shouldn't be a ***** breaking in a new motor. So quit being a *****.
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