Ya I noticed a few people on here have 160*, and I was just wondering, wat exactly does this do? I know it obviously drops the temp but does it have any hp gain or what? Also what is a vette servo? I also see a few people have these but never figured out what it is, thx fellas

 

lowering our operating temperature allows us to play with timing more. Cooler temps....more timing. Of course there is a balance here...the motor won't run to well at all if you keep the temps at 130*.

Vette servo and shift kits are trans modifications for firmer and more reliable shifts. The vette servo will help the trans handle the harder shifts as well. That's a lamen explanation..the real trans tech guys will chime in with the TMI I am sure though if you want more info.

 

I just happened to find a Corvette servo install write up (not sure which vehicle, but the operation is the same) that may be helpful.
http://s-series.org/Sections-index-r...-artid-29.html

As for the cooler stat, I run a 160* stat for a few reasons...mainly to keep my eng temps cooler to allow me to run more timing and more compression when I have my LQ9 in there. My opinion is if you install a cooler stat, you really should have the PCM tuned accordingly, to both optimize the effects of running cooler and to compensate for the cooler temps that may "confuse" the PCM. The combination of the 160* stat and e-fans allow me to keep it running precisely where I want it, around 175* (fans come on at 180* and off at 173*).

 

I agree with both dew and bud, but just to add to that... if you install a 160* T-stat and do not tune for it there will be no positive effects on your engine. And there will also be a nasty drop in MPG. On the upside it is one of the easiest and greatly beneficial mod you can do for the price, especially on an LQ9.

 

So does the 160* stat have any issues in cold weather environments? (assuming everything is properly tuned)

 

My LQ9 160* therm does not keep the temp at 160*. When the truck was stock the 185* therm let kept the truck at 205* plus up to 230*. After the therm and a tune setting the fans at 185* on low and 198* on high the truck now only hits 200* and comes back down to 185* fast. I have elect fans.

 

I've used 160* stats here in New Jersey for years and never had any adverse affects...this is my first fuel injected vehicle with a 160* stat and my first winter with it though. The PCM has been tuned accordingly so I don't forsee any problems. If you're concerned about not having good heater operation, I don't think you'll have a problem. I ran a 160* stat in my 85 Monte SS for about 5 years and always had great heat. So far, temps around here have just gotten down to the mid to high 20's, mostly in the 30's and my heat has been fine. I'll be able to report more as the temp drops closer to zero, which I'm sure will happen by January.

 

they also make a 180 thermo if u dont wanna go with the 160. my stock one was 212.

 

Just a little update...13* this morning and I still had great heat. I let the truck warm up for about 5 or 10 minutes while I ate a bowl of cereal and looked for my warm hat, and when I came out it was almost in operating temperature. Turned on the heater fan and it was already blowing warm...half way to work, it was blowing HOT (had to take off the warm hat )

So far, this 160* stat is reacting just like every other one I've used in the past during the winter

 

the best way to think of it...as told by Brian @PCMfoless...the LQ9 have al heads and using a lower temp will keep the heads from soaking up all that heat, thus allowing more timing...