2005 Thermostat

[HUM GOOD]

I own a 2005 H2. My mods have been:
-K&N cool air intake
-Diablo Tuner
-Borla headers and cat back duals
I was told it is stock with a 185 degree thermostat. It still runs at 210 degree. I looked into hypertech 160. I was informed they presently don not have a fit for the 2005 water pump.
Looking for ideas to drop the temp. Truck runs much crisper before warming up.
Thanks in advance for any insights.

Happy Hummin!

[HUM GOOD]

I own a 2005 H2. My mods have been:
-K&N cool air intake
-Diablo Tuner
-Borla headers and cat back duals
I was told it is stock with a 185 degree thermostat. It still runs at 210 degree. I looked into hypertech 160. I was informed they presently don not have a fit for the 2005 water pump.
Looking for ideas to drop the temp. Truck runs much crisper before warming up.
Thanks in advance for any insights.

Happy Hummin!

[HUMMERcustoms.com/TAZ]

Call Ligenfelter they have 160 degree that is where I got mine and KenP also. Reduces engine temp allot. Right now My intercooler on the supercharger is mounted in front of eveything and pulling heat from it through radiator core.
I'm thinking we are going to put an extra small fan behind the intercooler a puller, so that may be it will drop temp of engine more. That is if We have room for fan.
TAZ

[HUM GOOD]

Thanks for the info TAZ
Truck sounds awesome. Just got mine 3 weeks ago. Have a whipple supercharger ready to put on. Letting in break in. Probably laying it in after 10K miles. Amazed at how much potential this engine actual has. It ashame they let it out of the factory running like a dog.
I see your from Arkansas. That's where my truck was purchased from.
I'll let you know how I make out.

[GeorgeSSSS]

Guys:

Do you think there is any need to lower the engine temp of a stock H2? From what I hear, it does fine in all kinds of weather and off road loads. So far, mine has been fine (but I really haven't stressed it yet).

Best regards,

George SSSS

[HUM GOOD]

order the 160 from lingenfelter. Will be here tomorrow. Thanks!

[Induction Concepts]

Leave it alone. 180/185 is a perfect engine temp, thus why it is installed there from the factory. Engines don't run as efficiently when they are below this temp. 210 degrees is fine, especially in June/July with the AC running.

The computer runs on completely different maps when it is below this temp, such as cold-start and warm-up.

[HUMMERcustoms.com/TAZ]

George if Your running straight stock and not generating anymore heat than factory designed it to run at I would not change it. The main reason for changing is to help prevent detonation when You have forced induction or want to run a handheld tuner in perf. mode with 87 octane fuel. I have done it for 5 years on My Sliverado with lower t-stat, electric fans and a few more things and in perf. setting with it running very cool have had not had any problem running 87 in a 93 octane tuning. Checked for codes constantly for first year never got a detinaiton or ping code. You want to run as cool as possible if You are messing with performance. I'm doing everything i can do cool My rig down. Icebucket for fuel line for looks but, functional if needed. Water/methonal injection that works at WOT. 160 degree t-stat. electric fans which seem to pull way more air through radiator than factory. My AC improved it's cooling by almost double because of the increased air flow.
So in short if full stock do not mess with it.
I have even bypassed the water heater line to the throttle body because it does not get cold enough here for Me to need it and all it does is heat the air up coming into throttle body.
i hope i helped Gearge
George I should have mentioned the reason I run 87 in perf. is because the 87 is more unstable than 93 and generates more power. The goal in perf. Is rn tming as advanced as You can get without ping and to use the most unstable fuel You can to get more power. To do this requires the lower temp pocess. Now if it is full race rig I would have 100 octane in it because it is goig to try and detonate no matter how cool You rn it becuse of the compression ratio. 87 octane can detonate before the spark ever get's there id the compression is there along with the heat to fire it off just like desiel. It has no spark plugs but, it runs and ingnites by compression. 87 will do the same if You are not remembering that for every action there is a reaction. So 87 in high compression means reaction needs to be eveything as cool as possible so it does not detonate but, gives you more power. it is a dancing in a circle till You find the right combination. I ran until SC My H2 on perf. setting with 87 octane with all the cooling I could get and never had a problem. I experimented and ran all the 87 our of a couple of weeks with adding 93 and saw My milaege go done a little and could feel the loss in power. Went back to 87 until SC went in.
TAZ

[GeorgeSSSS]

Guys.

Thanks for the very interesting info. I'm definitely leaving it the way it is.

Best regards,

George