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pros and cons about slp 160* thermostat

Old 03-15-2004 | 05:20 PM
  #31  
Steve Y's Avatar
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A 160 degree thermostat should NOT cause the motor to warm up slower, just reach a lower peak temperature. The idea is that the thermostat stays shut until it reaches the specified temp, then it opens. Then when the temp falls below the specified temp it shuts again. It repeats this cycle over and over.
Old 03-15-2004 | 05:58 PM
  #32  
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wont a lower tstat cause HP loss without a tune due to it affecting the AFR?
Old 03-15-2004 | 06:38 PM
  #33  
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Originally posted by Florida_Z28_Boy
Also, for what it's worth...when Car Craft did their late model engine tech article on the LS1 one of the first mods they recommended was a the cooler thermostat
I can agree with that. But how low?
From personal experience with 2 LS1 cars going almost 600 passes down the track. There is no advantage in running a LS1 lower than 175-180°. It will run no faster cold or cooler than that. And a warmed up engine will last longer under heavy abuse. Now if you let it get over 210° or so it will slow down a little.
The LS1 motor being all aluminum disperses heat differently than a cast iron motor. And therefore can't be treated the same.
Old 06-09-2004 | 11:47 AM
  #34  
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Originally posted by AL SS590 M6
I can agree with that. But how low?
From personal experience with 2 LS1 cars going almost 600 passes down the track. There is no advantage in running a LS1 lower than 175-180°. It will run no faster cold or cooler than that. And a warmed up engine will last longer under heavy abuse. Now if you let it get over 210° or so it will slow down a little.
The LS1 motor being all aluminum disperses heat differently than a cast iron motor. And therefore can't be treated the same.

my car runs faster when its cold than warm, when its warm it barley breaks free but when it cold it burns tires like hell.
Old 06-09-2004 | 01:36 PM
  #35  
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Originally posted by bond449798
my car runs faster when its cold than warm, when its warm it barley breaks free but when it cold it burns tires like hell.
I think that has to do with the tires being cold too. Hot n' sticky gets traction, cold doesn't well
Old 06-09-2004 | 01:40 PM
  #36  
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Originally posted by 1KillerV6
I think that has to do with the tires being cold too. Hot n' sticky gets traction, cold doesn't well

yea that true but it still feels faster when cold.
Old 06-09-2004 | 11:46 PM
  #37  
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Doesn't heat = hp in an engine?
Old 06-10-2004 | 12:22 AM
  #38  
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Yea I agree, it does feel faster though.

And i'm definately not an expert but heat does = hp to a point. If its too hot, it will lose hp. I know that running a cold engine hard is bad, so heat preserves the engine. But too much heat is bad and can cause knock (detenation)

Oh, feel free to correct me as i'm still young and learning
Old 06-10-2004 | 02:38 PM
  #39  
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Yes, heat = hp. BUT heat + crappy fuel = detonation.

Plus for A4 guys, heat = tranny death. Your fluid flows through the radiator, if your ECT is 200° then you lowest fluid temp is 200°. Which is getting pretty high.

I've seen maybe 1 mpg drop with a 160° stat (I really cant tell a diff). I've not seen a rich condition either, the PCM should be able to adapt if it does go a little rich.
Old 06-11-2004 | 04:22 AM
  #40  
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Help me out here, my ride is in the shop for a new engine harness so now is the time to do this.

Would dropping a 160* stat with the fan kit in my 93' LT1 m6 help, hurt, or have no effect on over-heat and HP performance? Typically I drive only when its sunny out, a good freeway trip but sometimes get stuck in traffic - ever since I got it in 93', its been a fight to keep the temp down and the fans on sooner. Its never overheated per se, I've shut it down a few times because 240* is a bit high for my comfort zone (bad traffic, hot day).

I checked the link listed earlier so I plan on ordering the fan kit but thought about dropping in the 160* stat with a re-program anyway.

Thoughts? anyone? beuhuller?
Old 06-11-2004 | 02:30 PM
  #41  
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Originally posted by GEARHED
Help me out here, my ride is in the shop for a new engine harness so now is the time to do this.

Would dropping a 160* stat with the fan kit in my 93' LT1 m6 help, hurt, or have no effect on over-heat and HP performance? Typically I drive only when its sunny out, a good freeway trip but sometimes get stuck in traffic - ever since I got it in 93', its been a fight to keep the temp down and the fans on sooner. Its never overheated per se, I've shut it down a few times because 240* is a bit high for my comfort zone (bad traffic, hot day).

I checked the link listed earlier so I plan on ordering the fan kit but thought about dropping in the 160* stat with a re-program anyway.

Thoughts? anyone? beuhuller?
It's a great mod for an LT1
Old 06-11-2004 | 04:09 PM
  #42  
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My bad for checking the board so late...I should have been in the LT1 section but this is *great* information and help.
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