not per say, but under the t stat in the lim.
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07-19-2015
not per say, but under the t stat in the lim.
07-20-2015
but it's still on the other side of the thermostat so it's showing the temperature of the coolant that's in the engine?
07-20-2015
yeah, its in the coolant under the t sat.
07-20-2015
im like scotty tuned fans to turn on at 180 and have a 195 t-stat. even with under drive waterpump pulley i dont ever go over 190.
:4'' HAI\L67 HVTB\HV3\ER Rockers\WP underdrive pulley\Headers\cat delete\91 octane overkill incar tune.3.69 gears, Trans go shift kit.
07-20-2015
just order a tuned pcm from overkill, dont need to tune yourselfOriginally Posted by 01Grand PrixGT
:4'' HAI\L67 HVTB\HV3\ER Rockers\WP underdrive pulley\Headers\cat delete\91 octane overkill incar tune.3.69 gears, Trans go shift kit.
07-20-2015
I run a 180* tstat and a ZZP 1.0 PCM. I haven't seen 195* temps since I did that. Even idling in traffic in 90* weather.
07-20-2015
I belive so. There's a connector right under the thermostat behind the crossover pipe. I think that's the coolant temperature sensor. It goes right into the block.
07-20-2015
so then why is kornhead predicting doom and gloom ? he never actually said what he thinks the negative side effects are. as long as the engine temps are running cooler , then mission accomplished right ? i actually do have a 180 tstat , but after seeing the temps never even get to halfway on the gauge anymore, i figured there's no reason to put it in.
07-20-2015
Seems like im not the only one with 180 fans and 195 tstat, I love it.
07-20-2015
07-21-2015
you're basically running your fans all the time for no reason. that'd be a decent reason as to why you'd burn them out faster.
i had a caspers fan switch in my car so if i was ever in heavy traffic i could turn it on to keep it cool. having them run all the time via the PCM is kinda stupid.
07-21-2015
Actually it's in the LIM not the block.
Here's a pic of the end of the LIM, hole on the left is the ECT hole
Another pic from underneath
The electrical connector with the yellow on it goes to the sensor, just to it's right
07-21-2015
177-183 is how my temps range with a 180* t stat and proper fan settings
Not that it matters because this comment will be buried under 7 more pages lmao!
07-21-2015
No it's not. Because they only come on below X speed. They only run when the car is up to temp. Which keeps your temps constant instead of spiking and diving.
07-21-2015
i had a 180* stat with proper fan settings for it.
i'm saying running a 195* stat with 180* fan settings is dumb.
07-21-2015
IMO it's the same as running 195 settings. Close enough..
07-21-2015
Did not know this, thought it was just on 24/7.
07-21-2015
It's a bit tough to check at 65mph. Although..I think you could give it a good try. hahaha
07-22-2015
A couple of notes about running fans:
1) Fans consume electricity, and therefore power (via the alternator)
2) The amount of power fans draw decrease with speed. If a fan is trying to pull air at 30 MPH, but you are traveling at 60 MPH, the fans are basically freewheeling and barely drawing any current.
3) Cooler-running engines tend to knock less, therefore able to make more HP at WFO (typically this requires tuning changes).
4) Cooler-running engines have slightly less efficient combustion during normal driving- giving higher emissions, decreasing MPG, letting your oils accumulate more moisture & volatiles (which typically are acidic), and wearing out your Catalytic Converter faster.
5) If your fans are running but not needed, that's wasted energy.
6) Most OEM electric fans draw somewhere around 2,000 CFM (I'm not sure of the exact spec's on our cars). At 60 MPH, your radiator is exposed to about 15,000 CFM. There is no need to run fans once you are at speed. Generally anything above about 25MPH is useless for fans.
7) If your fan is running but your thermostat is closed, you're probably wasting all of the energy required to power the fans. Fans are really only needed when the thermostat is 100% open and ambient moving air is insufficient to cool the contents of the radiator.
And a couple of other things to keep in mind:
1) The temp seen by the thermostat is not necessarily the same as the temperature seen by the computer via the thermocouple.
2) Cylinders 2 & 5 run hotter than cylinders 1,3,4, and 6 - because they are "surrounded" by other cylinders. But because detonation (preignition) is bad in any cylinder, these are the ones where you typically have to fight detonation. This effect is minimized with higher flow rates.
3) There is NO MERIT WHATSOEVER to the argument that "coolant is flowing to fast to be cooled off in the radiator". The faster the better, period end of story. Therefore a periodic flushing is a good idea on several fronts.
4) I've never seen a water pump fail in such a way as to cause a cooling problem (unless it is completely seized). This would require that the impeller is somehow broken or not functional. Water pumps are designed to start dripping long before seizure typically occurs.
5) Cooling needs of the A/C system are not necessarily the same as the cooling needs of the engine, so fans may run based on the need of the A/C system even though the engine doesn't need it.
6) In some of the cars I've had in the past (not sure about this one), cooling fans are powered down above XX MPH because they are useless (even when A/C is running).
7) Preignition / detonation can be somewhat controlled by fuel octane rating. I run 89 octane in summer because it cuts back on my knock dramatically.
8) Octane requirements of a given engine increase as it ages. This is typically because of carbon buildup that creates local "hotspots" which can pre-ignite the fuel mixture in the cylinder. This can be somewhat offset by running the engine cooler as well (i.e. 180-degree themostat), although my personal preference is to use higher octane.
So "will a 180-degree thermostat help me"? Probably not - it's mostly use to defend against knock as you try to extract more and more HP from your engine.
-BC
07-22-2015
Dude I know. I just asked for insight and that's all I wanted. Now it turned into arguing and such lol.
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