Juan_Hong_Loe
That's dumb
Aight guys, 195 Theromostat did not work. Gonna try a wide band O2 sensor to tell if it is running lean or not. Proly gonna be sometime next week though. I will update as soon as I can. 
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Help Support Hardline Crawlers :
Cooling System??????????
- Thread starter Juan_Hong_Loe
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blacksheep10
XBJRA champ/ 555 and team Nasty codriver
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how bout shooting the exhaust tubes with a heat gun. that'll tell you lean condition right off.
Juan_Hong_Loe
That's dumb
blacksheep10 said:
How hot would be too hot when shooting the tubes?
blacksheep10
XBJRA champ/ 555 and team Nasty codriver
- Joined
- May 22, 2007
- Messages
- 10,442
- Reaction score
- 3
my thought was go find a vehicle with that same engine and shoot both. if the rig is close, run it. if its WAY hotter, check the plugs for whiteness.
have you checked the radiator flues . I have seen 2 or3 ALU rads that the flues have swelled up and cut the air flow off due to bad caps or over heating. would run fine at idle but heat up under a load. easy thing to check and no cost! wont hurt to check.
whowse said:
Wayne, is that you???
Juan_Hong_Loe
That's dumb
Well...
I tried the infrared thermal heat gun thingy on the radiator hoses and header tubes and these are my findings based on the motor in question 454 and Coles 496 (8.1)
454 496
Water temp @ T-stat Around 168 Around 168
Water temp @ Water Pump intake Around 118 Around 120
Water temp @ Upper rad intake Around 143 Around 135
Water temp @ Lower rad outlet Around 90 Around 98
Header Tubes @ idle @ operating temp Between 515-520 Between 380-420
Coles varied so much because I checked it when the fan was running and when it was not. The 454 had the fan running all the time. From the research I just got I would have to believe that the motor is running too lean? Not sure if over the years that these motors have changed that much in the cooling ports or whatever in the heads and intake but I wouldn't think that they would be that different? What do you guys think?
One more thing, the water temp sensor for the water gauge is right between #3 & #5 exhaust ports on the head. I shot the fitting with the gun and it read 275 degrees. Do you think I should find a different place for it as well? Gauge only read 210 degrees.
I tried the infrared thermal heat gun thingy on the radiator hoses and header tubes and these are my findings based on the motor in question 454 and Coles 496 (8.1)
454 496
Water temp @ T-stat Around 168 Around 168
Water temp @ Water Pump intake Around 118 Around 120
Water temp @ Upper rad intake Around 143 Around 135
Water temp @ Lower rad outlet Around 90 Around 98
Header Tubes @ idle @ operating temp Between 515-520 Between 380-420
Coles varied so much because I checked it when the fan was running and when it was not. The 454 had the fan running all the time. From the research I just got I would have to believe that the motor is running too lean? Not sure if over the years that these motors have changed that much in the cooling ports or whatever in the heads and intake but I wouldn't think that they would be that different? What do you guys think?
One more thing, the water temp sensor for the water gauge is right between #3 & #5 exhaust ports on the head. I shot the fitting with the gun and it read 275 degrees. Do you think I should find a different place for it as well? Gauge only read 210 degrees.
