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12-17-2003, 02:43 PM
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The longest build.....
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Join Date: Aug 2000
Location: Midwest, USA,
KS
Cobra Make, Engine: Mid-States, 428 Police Interceptor, TKO 5 speed, Jaguar rearend, Trigos, and Guardsman Blue!!!
Posts: 612
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Not Ranked
Oil temperature ????
What is the normal-average-safe oil temp
for a 428 in a Cobra with an oil cooler
running at 180 degrees water temp???
Thanks,
Bill Cook |
12-17-2003, 06:38 PM
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Senior Club Cobra Member
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Join Date: Jul 2000
Location: Chilliwack,BC,
BC
Cobra Make, Engine: F5 Roadster
Posts: 1,422
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Not Ranked
Hi,
You need some heat in the oil to lubricate properly.
In general the oil should be slightly warmer than the water temp, it should run 190 to 210 degrees, I wouldn't run it over 230 degrees.Your oil cooler should have a thermostat and bypass in it to let oil by until it warms up to go through the cooler.
Perry.  |
12-17-2003, 08:18 PM
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Senior Club Cobra Member
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Join Date: Mar 2001
Location: Southern Connecticut,
CT
Cobra Make, Engine: SPF - 351W, 944 non-turbo
Posts: 2,105
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Not Ranked
Do you measure the temperature before or after the oil cooler?
Bob |
12-17-2003, 08:24 PM
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Senior Club Cobra Member
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Join Date: Jul 2000
Location: Chilliwack,BC,
BC
Cobra Make, Engine: F5 Roadster
Posts: 1,422
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Not Ranked
Hi,
I would like to know the maximum temp so it would be before the cooler, or have 2 gauges and see how much the temp drops after the cooler.
Perry.
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12-18-2003, 06:29 AM
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CC Member
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Join Date: Aug 2002
Location: Dacula, (Atlanta),
GA
Cobra Make, Engine: Unique 427 SC, Southern Automotive 427W Stroker
Posts: 1,649
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Not Ranked
Bill, I don't know how a stroked SB compares to a BB with regards to oil temp, but my engine runs 190 degrees when tooling around town and sits squarely on 230 when I'm running hard down the Interstate. I do have an external cooler. I'm running below 160 on water temp in pretty much all conditions (love that high-volume Edelbrock water pump).
__________________
After a good hard ride.....oil pressure is over 50, temp is below 190, she idles and no new dents. LIFE IS GOOD!
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12-18-2003, 07:18 AM
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Renegade Nuns on Wheels
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Join Date: Aug 2001
Location: columbus,
Oh
Cobra Make, Engine: Unique 427 roadster with 351C-4B
Posts: 5,129
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Not Ranked
From what I can find the ideal range is 180 to 200 F. All automotive oil cooler thermostats that I found open at 180F so that seems to be saying something to me!
Rick |
12-18-2003, 09:20 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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Not Ranked
Take a look at the Canton unit. It places between the block and the cooler, two lines in, two lines out, block and cooler so the oil bypasses the cooler until temp. is reached then it's allowed through the cooler.
The open temp on the Canton is 210. They seem to feel that the temp needs to be this high to allow outgassing of the contaminants.
Expensive but pretty.
DonC
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12-18-2003, 10:15 AM
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Renegade Nuns on Wheels
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Join Date: Aug 2001
Location: columbus,
Oh
Cobra Make, Engine: Unique 427 roadster with 351C-4B
Posts: 5,129
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Not Ranked
Interesting! The Canton unit does open at 215. Guess it is time to drop a note to one of the oil companies! Still it appears to be that you want the oil some where in the 200 degree range.
Rick
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12-18-2003, 12:55 PM
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30 Year Wait is Over
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Join Date: Feb 2000
Location: London, Canada,
ONT
Cobra Make, Engine: SPF 1630 '70 429 SCJ / 501
Posts: 160
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Not Ranked
I agree with DonC. I bought the Canton oil thermostat because it opens at 215. Cool oil does not lubricate properly and does not evaporate the water that condenses in the block and heads. I think you want a 180 degree thermostat. I currently have a 160, but on the highway the car runs at 160. I do not believe it heats the oil sufficiently. I will switch to a high flow 180 with the steam hole drilled in the edge.
__________________
David J. Seed
Q: What makes a good racer?
A: Size 14 shoe, size 2 hat.
Buddy Baker, NASCAR Hero
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12-18-2003, 01:06 PM
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Senior Club Cobra Member
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Join Date: Mar 2002
Location: God's country,
ME
Cobra Make, Engine: Original ERA 427sc, Powered by Gessford
Posts: 2,678
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Not Ranked
I've been thinking about installing an oil t-stat b/c I don't think my oil is getting warm enough- and this time of year, I can guarantee it's not warm enough.
I like that canton unit, but was wondering if 215 is too warm.
DJseed, how did you plumb that unit?
Also, has anyone installed this mocal unit (the OT2) which has a 180 t-stat in it?
http://www.batinc.net/thermos.htm
edit: never mind the question regarding the mocal OT2. I just saw the other thread entilted "Mocal Oil Thermostat". 
__________________
Replica is not a dirty word.
"If you can't be a good example, then you'll just have to be a horrible warning."
Last edited by Chaplin; 12-18-2003 at 01:09 PM..
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