Drilling Thermosat
Burning Brakes
Joined: Aug 2006
Posts: 1,123
Likes: 1
From: Rockland County NY
Le Mans Master
Joined: Sep 2006
Posts: 6,050
Likes: 147
From: Phoenix AZ
2021 C4 of the Year - Modified Finalist
Turbo,
figure your car should run 100 degrees over outside air while driving on freeway.
Slightly higher on rubberized asphalt. higher yet on piestewa peak at the curve going north.
So your car should be at 205-210 degrees on a 110 degree day on freeway. 225 in stop and go.
With an all aluminum 2 row, and a 170 t-stat, 90 degrees outside, my 86 runs at 175 degrees on fwy.
At 109 degrees, it runs at 189 on fwy. In stop and go, it runs at 195.
figure your car should run 100 degrees over outside air while driving on freeway.
Slightly higher on rubberized asphalt. higher yet on piestewa peak at the curve going north.
So your car should be at 205-210 degrees on a 110 degree day on freeway. 225 in stop and go.
With an all aluminum 2 row, and a 170 t-stat, 90 degrees outside, my 86 runs at 175 degrees on fwy.
At 109 degrees, it runs at 189 on fwy. In stop and go, it runs at 195.
Last edited by coupeguy2001; Aug 3, 2010 at 02:05 PM. Reason: info
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
According to TPIS's instructions - which is where I first learned of this procedure, it's actually a TWO PART mod.
Not only are the two holes drilled (different sizes based on the ambient temperature expectation) but the by-pass hole behind the passenger side leg of the water pump should be plugged.
That makes the job a lot more involved; pulling the W/P and re-installing it.
Jake
Not only are the two holes drilled (different sizes based on the ambient temperature expectation) but the by-pass hole behind the passenger side leg of the water pump should be plugged.
That makes the job a lot more involved; pulling the W/P and re-installing it.
Jake
Melting Slicks
Joined: Feb 2006
Posts: 2,753
Likes: 15
From: backwoods upstate ny
drill the t-stat and engine warm-up to 'normal op temp' will be slightly longer but without overshoot/undershoot of coolant temp...better for the engine but vehicle occupants may complain of reduced cabin heater enthusiasm in low ambient conditions.
fwiw, our testing showed that with four 3/16'' holes in the t-stat, ambient 85*F, light engine load: coolant temp never reached the t-stat rating (too much not always a good)
Last edited by redrose; Aug 3, 2010 at 03:41 PM.
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Congratulations. That is a huge lifetime achievement. God Bless Him. My son also went to West Point, Jason Verkay,Class of 95 I think it was. Was in Special Forces, Rangers, fought in Macedonia and Bosnia. Came out a Captain and works for Capital One now. He bought me the house I live in. Great people go there and even greater people come out.
That also reflects on the fine up bringing your son had. He will need as much support as you can give him now, and I will have him in my prayers. You will see that they take care of their own now, and anything I can help you with do not hesitate to contact me, Welcome to the Family. Brian Verkay Sr.
That also reflects on the fine up bringing your son had. He will need as much support as you can give him now, and I will have him in my prayers. You will see that they take care of their own now, and anything I can help you with do not hesitate to contact me, Welcome to the Family. Brian Verkay Sr.
Right now Ryan's attending a 4 month training program at Ft. Lee, VA. Won't be back to Ft. Hood until November.
Jake
Melting Slicks
Joined: Jun 2010
Posts: 2,178
Likes: 1
If you are just trying to bleed air, do it this way.
With a cool engine, take radiator cap off.Then start Vette, turn heater on full. Rev engine to about 1500 ish, then when temp gets to where the thermostat opens, you will see flow and then add distilled water as necessary to fill her up. Thren, once full, put radiator cap back on.
Reduce rpms. Radiator system is now fully packed.
With a cool engine, take radiator cap off.Then start Vette, turn heater on full. Rev engine to about 1500 ish, then when temp gets to where the thermostat opens, you will see flow and then add distilled water as necessary to fill her up. Thren, once full, put radiator cap back on.
Reduce rpms. Radiator system is now fully packed.
Last edited by Charleston2012; Aug 3, 2010 at 07:20 PM.
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Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
I recommend them because I've had a NON Fail-Safe version fail on my while driving down the road IN THE CLOSED position. Almost left me stranded.
I was able to wait out the time for cool down and finally made it home with the temp at 260F!!!
Jake
Burning Brakes
Joined: Oct 2009
Posts: 773
Likes: 2
From: Minneapolis MN
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
[QUOTE=94vettelover2;1574908291]Jake,your son in the pic looks like he could kick some ***-especially mine
QUOTE]
Let's hope it doesn't come to that, LOL.
Black Belt, Tae-Kwon-Do, hard as a rock thanks too the Army's physical training.
Jake
QUOTE]Let's hope it doesn't come to that, LOL.
Black Belt, Tae-Kwon-Do, hard as a rock thanks too the Army's physical training.
Jake
Safety Car
Joined: Jan 2004
Posts: 3,759
Likes: 8
I have and am using one of those and, no hole. Most auto stores sell them; Advance, O'Reilly's and yes, AutoZone.
I recommend them because I've had a NON Fail-Safe version fail on my while driving down the road IN THE CLOSED position. Almost left me stranded.
I was able to wait out the time for cool down and finally made it home with the temp at 260F!!!
Jake
I recommend them because I've had a NON Fail-Safe version fail on my while driving down the road IN THE CLOSED position. Almost left me stranded.
I was able to wait out the time for cool down and finally made it home with the temp at 260F!!!
Jake
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Jake
Race Director
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
BTW,,,Anyone ever consider that 3/8" burp holes might let your stat perform like a 160-degree stat?
Better yet,,,if you run one that stuck open, it's like a 0-degree stat! What's the problem?!?!? 
Instructor
Joined: Aug 2012
Posts: 213
Likes: 0
From: Carrollton TX
I was wondering about benchmarking, as I wasn't sure whether I was getting the best cooling efficiency out of mine, but looks like I am getting similar specs. Thanks for the confirmation.
Heel & Toe
Joined: Feb 2012
Posts: 21
Likes: 0
From: Queen Creek Arizona
Sounds exactly like my '96 (only I'm running a Hypertech 160* stat and a DeWitt's new model single-row radiator). Sounds like mine is about as close to your mentioned specs as can get
I was wondering about benchmarking, as I wasn't sure whether I was getting the best cooling efficiency out of mine, but looks like I am getting similar specs. Thanks for the confirmation.
I was wondering about benchmarking, as I wasn't sure whether I was getting the best cooling efficiency out of mine, but looks like I am getting similar specs. Thanks for the confirmation.
Just a side note, do you Phoenix guys go to the Pavilion in Scottsdale on Saturdays?
