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10-20-2014, 07:17 PM
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CC Member
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Join Date: Aug 2009
Location: Phoenix,
AZ
Cobra Make, Engine:
Posts: 1,956
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Blocking Radiator ???
Can I block off a small percentage of my radiator with heavy duty clear Scotch packing tape???
I just installed a new 180 T-stat and it still runs to cool once the t-stat opens, I guess it doesn't close down much after it gets under 180.
I'm running 70 Celsius/ 158 degrees cruising at speed even in warn weather.
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FFR MK1---Sold
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10-20-2014, 07:46 PM
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CC Member
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Join Date: Dec 2012
Location: Phoenix,
AZ
Cobra Make, Engine: FFR1983, 427W, IRS, Wilwood brakes
Posts: 290
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Sounds like a good use for some large driving lights!
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10-20-2014, 07:47 PM
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CC Member
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Join Date: Dec 2012
Location: Phoenix,
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Cobra Make, Engine: FFR1983, 427W, IRS, Wilwood brakes
Posts: 290
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You should check the melting temp of packing tape before putting it on the radiator or you may have a mess!
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10-20-2014, 07:59 PM
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CC Member
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Join Date: May 2001
Location: California,
Ca
Cobra Make, Engine: NAF 289 Slabside Early Comp Car with 289 Webers and all the goodies. Cancelling the efforts of several Priuses
Posts: 6,592
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I use a piece of 1/8" clear Lucite plastic and clear Silicon adhesive. 8" tall and the width of the radiator core.
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Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way
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10-20-2014, 09:09 PM
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CC Member
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Join Date: Jul 2012
Location: Peoria,
AZ
Cobra Make, Engine: FFR, 347, Massflow inj, 65 GT350 tribute
Posts: 80
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Oil cooler? if so disconnect it for the street.
Mike
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10-20-2014, 09:46 PM
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CC Member
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Location: Phoenix,
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Quote:
Originally Posted by ffr 1137
Oil cooler? if so disconnect it for the street.
Mike
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Oil cooler not hooked up, just for looks I guess.
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FFR MK1---Sold
Superformance #884 --- Sold
No more Furds.
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10-21-2014, 05:15 AM
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CC Member
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Join Date: Sep 2013
Location: Sparta,
nj
Cobra Make, Engine: Backdraft 1048
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Before doing anything I would check to make sure the gauge is reading correctly.
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Gary
Backdraft 1048
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10-21-2014, 07:33 AM
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Senior Club Cobra Member
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Join Date: May 2007
Location: Mesa,
AZ
Cobra Make, Engine: Contemporary Classic, 428 FE CCX 3069
Posts: 7,506
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I second the gage reading suggestion. Make sure your gage is correct. What does the oil temp read when it comes up to temp?
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Dan in Arizona
CCX3209
"It's a great car and I love it, but it doesn't do 'SLOW' very well."
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10-21-2014, 07:37 AM
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Senior Club Cobra Member
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Join Date: Jun 2003
Location: West Linn,
OR
Cobra Make, Engine: ERA #684, 428 FE, TKO600
Posts: 1,378
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X2 on making sure the gauge is correct. Use a laser thermometer and check the upper and lower radiator hoses when you're sure the engine is at full temp. Even a cheapie HF will work in a pinch.
Not a problem blocking off part of the radiator if the engine is indeed running that cool but make sure whatever you block with can be easily removed "on the road". Approach how much you're going to block off in steps so you don't overdo it.
DonC
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10-21-2014, 07:53 AM
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Senior Club Cobra Member
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Join Date: Sep 1999
Location: SHERRILLS FORD,
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Cobra Make, Engine: Lone Star, 351-c
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If the temp is correct, how about a new thermostat? If the 180 is still too cool. try a 195.
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CHRIS POTTER
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10-21-2014, 09:40 AM
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Quote:
Originally Posted by CHRIS POTTER
If the temp is correct, how about a new thermostat? If the 180 is still too cool. try a 195.
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I agree.
I'm sure I'll get a little heat on this but, 180 degrees is really a little low. Low engine temperature isn't good for good combustion, fuel economy or maximum power.
Optimum engine oil temperature should be 220 degrees. Below this it also doesn't allow moisture in your crankcase to evaporate as quickly, fouling your oil more quickly. Nascar engines intentionally run at 220 or more because they make more power. Newer cars all run above 200 as normal.
200 is a better temperature to run at. Change to a 195 degree stat and forget the tape.
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10-21-2014, 09:43 AM
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Both water and oil temps read the same at cruise.
195 t-stat would be my best bet I guess.
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FFR MK1---Sold
Superformance #884 --- Sold
No more Furds.
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10-21-2014, 10:00 AM
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CC Member
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Join Date: Aug 2000
Location: Glendale,
AZ
Cobra Make, Engine: SPF 468ci 550HP + 150HP NX Matching Shelby GT500 650HP
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Dan, in the long run a cooler running engine lasts longer. Mine runs about 70 degrees for both oil & water at cruise in non-hot weather but still rises to 80 degrees locally. In the summer add 10 degrees to both cases. On the track or driving hard uphill my numbers rise to 100 water and 110 oil. Be careful what you wish for. My motor is older (1972) but I have 61K miles on it, change the oil every 3K miles and it still runs great. When my engine gets too warm it doesn't want to start (vapor lock.) That's why I always open my hood when I stop.
AZ Bob
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10-21-2014, 04:18 PM
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Quote:
Originally Posted by DWRAT
Both water and oil temps read the same at cruise.
195 t-stat would be my best bet I guess.
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Just to confirm, you said you put in a new 180 degree TStat. Both your oil temp gauge and coolant temp gauge read the same at 70 degrees C. Is it possible you got a 160 TStat in a mislabeled box or just a bad new one. A 160degree F could produce a warmed up coolant temp of 158 degree F (70 C).
A 180F TStat should produce a 190F coolant temp on warm days like we have been having.
That makes more sense than anything as I would think it unusual to have both oil and coolant gauges reading twenty degrees below 180 F
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Last edited by Car Nut; 10-21-2014 at 04:20 PM..
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10-21-2014, 07:10 PM
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Definitely got a 180 t-stat and tested it before installation on the stove in a pot of water with a gauge in the water and it opens right at 180.
My coolant gauge goes right up to 80 in the first 2 miles or so but once t-stat opens it cools back down to 70 and stays there.
Oil temp runs hotter when playing on the street but not open road cruising.
I'm going to stick with the 180 t-stat.
I just cut 3 different pieces of Lucite and will experiment on my next trip. (4", 6" & 8")
No more running at 70 in cool country for me.
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FFR MK1---Sold
Superformance #884 --- Sold
No more Furds.
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10-22-2014, 11:23 AM
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Senior Club Cobra Member
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Join Date: Dec 2001
Location: Glendale,
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Cobra Make, Engine: Cobray-C3, The 60's body lines on todays chassis technology
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Hey Dan,
I noted on cold start up your engine heats up to 180* but then drops 20* when t-stat opens and normalizes at the lower temp of 160*. You also said you verified opening temp on the stove. You also said your oil temp is concurrent with coolant temps (each at 70C) 158*.
Before hanging your hat on these numbers from a cold start I would run long enough to get everything to settle and fully heat oil and engine bay with coolant at stable readings. Oil temp will be about 20* above coolant but your sensors locations can also affect readings. You need to drive the car not just run in the driveway. Gauges and sensors all rolled up with the +/- allowed still have you at a reasonable reading. Is oil pressure real high? If it ain't broke do not fix it.
After a drive if the numbers look the same and you still have a temp of 160* maybe you are bypassing the t-stat with heater hoses or a bypass hose around the t-stat. I would rather see her at 180* but 160 beats the hell out of 220 or 230.
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10-22-2014, 03:02 PM
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CC Member
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Join Date: Jun 2001
Location: Mesa,
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Cobra Make, Engine: ERA #2119 289FIA
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Ratti-Dan,
"I would rather see her at 180* but 160 beats the hell out of 220 or 230"
True Dat. I finally wound up buying 6 gallons of Evans Waterless Coolant so I could quit worring about high temperatures. Maybe whoever winds up with my old Rat Motor will be able to figure it out.
Unless you are running some sort of fuel injection or needing to squeeze every last pony(like if you're trying to beat a Chevy), I wouldn't worry.
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Karlos
"In the Land of the Pigs, The Butcher is King"
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10-22-2014, 03:41 PM
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Quote:
Originally Posted by vettestr
maybe you are bypassing the t-stat with heater hoses or a bypass hose around the t-stat.
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Ya, I am doing that I guess. I forgot about that heater hose that comes out right next to the t-stat.
What's that hose for anyways???
__________________
FFR MK1---Sold
Superformance #884 --- Sold
No more Furds.
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10-22-2014, 04:04 PM
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CC Member
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Join Date: Jul 2010
Location: McMurray,
PA
Cobra Make, Engine: Superformance #522
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Quote:
Originally Posted by DWRAT
Ya, I am doing that I guess. I forgot about that heater hose that comes out right next to the t-stat.
What's that hose for anyways???
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It's a bypass hose, allows the pump to circulate water thru block and heads while tstat is closed. Have you verified the fan relay switch, there are several temps available for it.
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10-22-2014, 04:32 PM
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Quote:
Originally Posted by vatdevil
It's a bypass hose, allows the pump to circulate water thru block and heads while tstat is closed. Have you verified the fan relay switch, there are several temps available for it.
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Yes, my fan auto kicks on around 95 or so.
I usually manually kick it on in traffic around 85 or so.
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FFR MK1---Sold
Superformance #884 --- Sold
No more Furds.
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