How many of you are running a 180 degree themostat on a basic cai tune? If not needed, then how about with a 2.6 pulley? We have had 52 straight days of over 100 degree temperature. Just to know if it would really help?? Thanks for any and all feed-back.
I'm runnng a 180. Someone on the forums (can't remember who) measured lower IAT2 temps with the lower stat, which will translate to more power. Remember you have to lower your fan temps or you won't see the benefit of the lower stat. You can only do that with a custom tuner (not Pro Cal).
Good luck.
Stock is 192. And presently nobody makes a 180 for the GT500's. If you are putting in a 180... the NAPA or Motorad they are not made for our cars. They are for 4.6 32 valve vehicles. The GT500's t-stat has a longer travel. If you put in one of the other t-stats when it opens it does not fully close of the bypass valve and you will be recirculating hot water.
I just sent Joel of Reische Performance a GT500 tstat housing as he is developing a stat for our cars.
Stock is 192. And presently nobody makes a 180 for the GT500's. If you are putting in a 180... the NAPA or Motorad they are not made for our cars. They are for 4.6 32 valve vehicles. The GT500's t-stat has a longer travel. If you put in one of the other t-stats when it opens it does not fully close of the bypass valve and you will be recirculating hot water.
I just sent Joel of Reische Performance a GT500 tstat housing as he is developing a stat for our cars.
Stock is 192. And presently nobody makes a 180 for the GT500's. If you are putting in a 180... the NAPA or Motorad they are not made for our cars. They are for 4.6 32 valve vehicles. The GT500's t-stat has a longer travel. If you put in one of the other t-stats when it opens it does not fully close of the bypass valve and you will be recirculating hot water.
I just sent Joel of Reische Performance a GT500 tstat housing as he is developing a stat for our cars.
Stock is 192. And presently nobody makes a 180 for the GT500's. If you are putting in a 180... the NAPA or Motorad they are not made for our cars. They are for 4.6 32 valve vehicles. The GT500's t-stat has a longer travel. If you put in one of the other t-stats when it opens it does not fully close of the bypass valve and you will be recirculating hot water.
I just sent Joel of Reische Performance a GT500 tstat housing as he is developing a stat for our cars.
Stock is 192. And presently nobody makes a 180 for the GT500's. If you are putting in a 180... the NAPA or Motorad they are not made for our cars. They are for 4.6 32 valve vehicles. The GT500's t-stat has a longer travel. If you put in one of the other t-stats when it opens it does not fully close of the bypass valve and you will be recirculating hot water.
I just sent Joel of Reische Performance a GT500 tstat housing as he is developing a stat for our cars.
I'm not doubting you but I measured my NAPA TH-109 and the stocker side-by-side and they had identical travel and lower poppet diameter. It was rlhay2 that did some data logging with that stat on the GT500 forums and the results are pasted below:
More stock stats, ambient air temp about 62 degrees:
IAT1 : 82
IAT2 : 120
Average running temps were 200-204 degrees.
Today's air temp was around 60 degrees resulting in the following
IAT : 74
IAT : 110
Average running temps were 184-188 degrees.
In summation, under similar conditions:
20 degree cooler engine coolant temperature
8 degree drop in IAT1 temperature
12 degree drop in IAT2 temperature
Need to boil the stock 192 and a napa and then measure and see if there are differences that matter.Looking at my F-150 the thermostat housing is much different and on the opposite side of the motor.Anybody tried calling Ford tech yet.If I had to say it would be that the GT-500 has a unique thermostat.
____________________________________
2008 GT-500 KB Stage 3,IW 10% Lower Dampner,UPR Extreme Lowers,Steeda Relocation Brackets,J&M UCA,Shelby X-Treme Brakes,Line Loc,SVT FR3 Suspension,Triax Shifter,DSS Driveshaft,Revan Racing Radiator and Heat exchanger,Reische 170,BMR Adjustable Panhard Bar,Dynatech Headers and X,Etc... #2 of 314 Alloys Built.
The GT500 uses a unique t-stat, the Motorcraft RT1185... it is similar to an SOHC t-stat but it reaches farther into a larger diameter bypass.
That NAPA thermostat is made for the cold-side 4.6L DOHC setup. Externally the two t-stats/bypasses are of similar dimensions but if you observe both t-stats opening you will see that the bypass plate does not move on a 4.6L DOHC stat. The bypass coolant flows up through the stem and is controlled by the pellet coming down and blocking the holes in the stem.
I am working on a 170* t-stat for the GT500 and hopefully we'll be testing something within a week.
The GT500 uses a unique t-stat, the Motorcraft RT1185... it is similar to an SOHC t-stat but it reaches farther into a larger diameter bypass.
That NAPA thermostat is made for the cold-side 4.6L DOHC setup. Externally the two t-stats/bypasses are of similar dimensions but if you observe both t-stats opening you will see that the bypass plate does not move on a 4.6L DOHC stat. The bypass coolant flows up through the stem and is controlled by the pellet coming down and blocking the holes in the stem.
I am working on a 170* t-stat for the GT500 and hopefully we'll be testing something within a week.
The GT500 uses a unique t-stat, the Motorcraft RT1185... it is similar to an SOHC t-stat but it reaches farther into a larger diameter bypass.
That NAPA thermostat is made for the cold-side 4.6L DOHC setup. Externally the two t-stats/bypasses are of similar dimensions but if you observe both t-stats opening you will see that the bypass plate does not move on a 4.6L DOHC stat. The bypass coolant flows up through the stem and is controlled by the pellet coming down and blocking the holes in the stem.
I am working on a 170* t-stat for the GT500 and hopefully we'll be testing something within a week.
Please hurry, it's HOT as Hell here in TX right now
I bought the NAPA one from Lethal about a week ago and my temp actually go hotter. I took it off and put the stocker back on. I talked to Lethal about it but they said that's what everyone was using and could not get a refund because it was installed......oh well I'll just wait until yours comes out.
____________________________________ 2007 Grabber Orange Shelby
78mm Precision Turbo custom kit
Forgeline GA3R 20 x 9.5 & 20 x 11
KW Variant 3 Coilover Kit
Brembo 6 piston 380mm (15") 2pc rotors
C & R Heat Exchanger
BMR Front & Rear Adjustable Control Arms
BMR K Member more coming soon....
99 Cobra w/PTK GTS 76mm Turbo
Full 03 Cobra body kit
Kenny Brown K-Member
Kenny Brown Control Arms
Kenny Brown Strut Brace
Live Axle w/MM Panhard Bar
MM Lower control arms
TA Diff Cover
Bilsteins w/MM Coilovers all 4
Tremec T-56
Leather Recaro Sports
HRE 18x9.5 & 18x11
Stoptech 14" BIG Brake Kit
Magnaflow CatBack
I read in 5.0 mustang and super fords about a 160 degree stat for gt500's that Pauls high performance sold. I called and ordered one and before I put it in I tested it in hot water. I tested it with a meat thermometer and compared it to a 190 degree stat that I laying around. It started to open later than the 190 stat. When I used the thermometer it would start to open around 195-200 degrees. I called them and they said you could not test them with hot water because they are a 2 stage stat and if I wanted I could send it back. They said they have installed alot of them in their shop and never had problems. I could not understand why you could not test them in water.I sent it back and it took them 2 months to refund me. I had to have my credit card company get my money back.Every time I would call they said they would refund my card but they didnt. They have terrible customer service. I would not reccomend buying from them.
The GT500 uses a unique t-stat, the Motorcraft RT1185... it is similar to an SOHC t-stat but it reaches farther into a larger diameter bypass.
That NAPA thermostat is made for the cold-side 4.6L DOHC setup. Externally the two t-stats/bypasses are of similar dimensions but if you observe both t-stats opening you will see that the bypass plate does not move on a 4.6L DOHC stat. The bypass coolant flows up through the stem and is controlled by the pellet coming down and blocking the holes in the stem.
I am working on a 170* t-stat for the GT500 and hopefully we'll be testing something within a week.
I look forward to seeing what you come up with and the test results. I for one will be ordering a $50 stat if it proves to help. I currently have the 180 and while it does maintain slightly cooler idle temps and putting around town temps, it performs much worse than stock on the track. Your info about it not closing the bypass would explain that behavior and show that a proper stat would work far better on the street if true. Please keep us informed on your new product. Yes its hot as H&)) her in Houston.
____________________________________
2006 Midnight Blue w/ Satin Silver stripes Ford GT number 366. Going to keep this one!
Wifes CUV: 2011 Lincoln MKT Ecoboost
Gone: 2007 GT500 in Vista Blue with Tungsten stripes.
i thought most ppl with turbo/sc cars ran 160 stat at least that what we ran in r 04 SRT-4...and alot are n/a stuff we run 180
____________________________________
2000 GT 5spd- 3.73, x-pipe, tune, CAI(DD)
1995 COBRA-2 yrs worth of headaches 4 motors later and still aint running
1994 LT1 Vette auto STOCK(FS$7,000)55k on her
1995 GMC Sierra 1500 p/u(sold)
1999 GT Vert. 5spd(Saleen clone)(SOLD)
I don't see why Lethal wouldn't atleast give you "credit" for your purchase?
How would anyone know that a themostat is or isn't going to help without trying it out first?
Just hope we give an imPROVED themostat by the Beginning of next summer.
I'm very pleased with the results and happy to announce that production of this thermostat is a go. They should be available from me or Lethal Performance within a week
FORD 5.4L DOHC IDLE ECT DATA
Test vehicle: 2007 Shelby GT500 w/OEM radiator (03 DSG Snake)
Control conditions: 5 min hot idle with A/C on low, cooling fan on
Logging performed: August 31, 2009
Cruise Data & Notes
SCT XCAL fan settings: High 188°/Low 182° (fan shuts off at 176°)
Ambient temp: 78°
A/C: Off
*Non-stop freeway cruise with 3-5sec WOT bursts: Nominal ECT range 174-178°
*Saw highest ECT of 180° after a few back to back WOT bursts, lowest ECT was 172°
*Fan did not run at all on the freeway
My impressions/interpretation of the data:
In the 78° ambient temp it seems the ECT wants to settle around 174° as long as the car is moving at 50+ mph, which is a few degrees cooler than a 4.6L DOHC setup. Short WOT bursts resulted in no more than a 2° rise in ECT. Thermostat seems to flow to rad pretty well by 182° and the stock GT500 fan/radiator setup proved more than adequate, easily controlling temps with the low speed fan. I think this is testament that the GT500 cooling system is pretty well done. It's hot-side thermostat housing design is superior to the 4.6L DOHC and favors high flow to the radiator, maximizing the larger diaphragm t-stat, with the coolant forced to take a 180° turn around to go back into the bypass. I feel confident that the 182° low fan setting will keep ECT in a target range of 176-184° under most city driving conditions.
Last edited by jm@ReischePerf; 09-01-2009 at 04:17 PM..
The 160 degree t-stat I got from Lethal worked/s great. Huge Engine temp reduction. I put it lin last fall. Living in SE GA. Driving in 32 Degree weather you had better take a jacket, very little heat. During the summer the gauge moves about a 1/4 inch (7 oclock) compaired to 1/2 inch (5 oclock). I uses a hand held temp reader and the results are the same 30 degree lower temps.
____________________________________
2007 Shelby GT500 Vert, Performance White.
-Mods-
American Racing Long Tube Headers~3" Full Exhaust Catless X pipes~2.6 Pulley and Idler
JLT Intake ~Evolution Stage 4 Tune~AFCO Heat Exchanger
BMR Carbon fiber DS !1:3.73s~Steeda UCA & LCAs
Proglass/Profinish Cold Air Hood~Aeroform Sport Bar~35,958 miles in 29 months.
All mods installed by owner
Best 1/4 mile, 11.491 ~Best 60', 1.7.38 ~Best 1/4 MPH 123.33
I don't see why Lethal wouldn't atleast give you "credit" for your purchase?
How would anyone know that a themostat is or isn't going to help without trying it out first?
Just hope we give an imPROVED themostat by the Beginning of next summer.
Yeah.........you win some, you lose some.
Glad Reische Performance will have one soon that is made for the GT500 ONLY and works! I'm ready to order.
Don't be so quick to draw that conclusion. Yes, you guys have had decent cruise ECTs using thermostats that leave the bypass open for a couple reasons:
1. The fan is being run a lot or constantly to achieve that ECT.
2. The thermostat housing favors high flow to the radiator and hinders bypass flow once the t-stat opens. This helps maintain decent temps while cruising but when you really bring the heat on you need to be able to completely shut down the bypass to maximize cooling capacity.
Someone recently reported to me that an improper low-temp thermostat works ok on the street but actually performs worse on the track than the OEM t-stat which is exactly what I would expect from an open bypass.
I promise you that this new 170 t-stat will outperform any 160 SOHC stat with better cold weather ECTs/warm-up but most importantly when under a lot of WOT.
Got the Reische Performance themostat in and it really helps.
Yesterday with temp at 102 degrees outside, the car read 182 in surbs. 45 mph zone stop-n-go tariffic. This just has to help out the motor. Thanks Resiche!!
Your welcome... so far results with the new t-stat have been pretty consistent! And thank you for posting your results, it really helps with getting the word out.
and could not get a refund because it was installed......oh well I'll just wait until yours comes out.
This just has to help out the motor. Thanks Resiche!!
Linear Mode
