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Old 05-03-2012, 06:11 PM   #1
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Engine temp

I have a 92 fox that I just finished building and I have a autometer mechanical water temp gauge on it and a 180 thermostat in the engine. While driving my car never gets above 180or just might hit it. I just replaced my ignition switch because of a different problem I was have and while I was in the middle of it my gauge read 190 after the car was off for like 5 minutes. my radiator has 50/50 and is full a. Anyone seen or know what the problem is. I tried a autozones gauge to see any difference but it barley gets to 170 but that's why it's only $17 lol. I read that my car should be around 190-195 about. the whole engine is new except for the block, crank, and rods. So what do y'all think?
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Old 05-03-2012, 08:16 PM   #2
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Re: Engine temp

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Originally Posted by Chris01 View Post
I have a 92 fox that I just finished building and I have a autometer mechanical water temp gauge on it and a 180 thermostat in the engine. While driving my car never gets above 180or just might hit it. I just replaced my ignition switch because of a different problem I was have and while I was in the middle of it my gauge read 190 after the car was off for like 5 minutes. my radiator has 50/50 and is full a. Anyone seen or know what the problem is. I tried a autozones gauge to see any difference but it barley gets to 170 but that's why it's only $17 lol. I read that my car should be around 190-195 about. the whole engine is new except for the block, crank, and rods. So what do y'all think?
I think if you put a 180 degree thermostat in it that it's not going to get to 190-195 degrees. Put the factory temp thermostat back in it.
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Old 05-03-2012, 10:30 PM   #3
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Agreed with what TH said...plus when you shut your car off since the coolant isn't flowing and dispersing heat through the rad anymore it will jump up in temp because the block is still hot...
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Old 05-03-2012, 10:42 PM   #4
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Ok that's what I was thinking about the gauge..I have just read so much good stuff on using the 180 over the stock and 160 t-stat. So is is my engine running to cold or is175- 180 ok? If so I'll just change it out this weekend
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Old 05-03-2012, 10:47 PM   #5
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im not sure if its really gonna hurt it short term but i would change it. and i cant give you all the reasons why. but i do know that the engine does run better at those the 190-195 range. and also the oil will flow better when its a little warmer. i think i have a 185 in mine. it was fine till i put aluminum heads on now its cooling a little more than i like. so i also am gonna go a little higher.

---------- Post added at 10:47 PM ---------- Previous post was at 10:46 PM ----------

if you want better cooling out of your thermostat you can go with a high flow. it will still open at the right temp but will allow more coolant to pass.
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Old 05-03-2012, 10:52 PM   #6
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180's to cold for the fox's...I think below 180 you can cause additional wear on the engine...go back to stock thermo!.

---------- Post added at 10:52 PM ---------- Previous post was at 10:50 PM ----------

Edit!!....what ^he said^
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Old 05-03-2012, 10:54 PM   #7
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I also got aluminum heads trickflows to be exact. Thanks guys I'll be changing it out to a stock.. If I remember right the spring side goes in the block
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Old 05-03-2012, 11:01 PM   #8
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I also got aluminum heads trickflows to be exact. Thanks guys I'll be changing it out to a stock.. If I remember right the spring side goes in the block
correct..
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Old 05-03-2012, 11:11 PM   #9
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Re: Engine temp

Here's the deal. To lubricate properly your oil needs to be at a minimum temperature of 180 degrees.
It may run borderline with a 180 degree coolant temp and not lube your engine properly.
That coupled with the richer fuel mixture will cause premature wear to your engine.


The only time you might want to run a cooler than normal thermostat is on a dedicated strip car, where there are some small benefits to the richer fuel mixture.
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Old 05-03-2012, 11:21 PM   #10
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Ok well I'll keep that in my notes thanks
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Old 05-03-2012, 11:24 PM   #11
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Quote:
Originally Posted by Trojan Horse
Here's the deal. To lubricate properly your oil needs to be at a minimum temperature of 180 degrees.
It may run borderline with a 180 degree coolant temp and not lube your engine properly.
That coupled with the richer fuel mixture will cause premature wear to your engine.

The only time you might want to run a cooler than normal thermostat is on a dedicated strip car, where there are some small benefits to the richer fuel mixture.
Curious...what benefit do you get from runnin rich at the track?...just more fuel at high rpms?...
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Old 05-04-2012, 04:59 AM   #12
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Re: Engine temp

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Curious...what benefit do you get from runnin rich at the track?...just more fuel at high rpms?...
Engine runs cooler, less likely to detonate, burn a piston from leaning out at high rpms.
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