Lights on front affect cooling?

R

Red90

Well-known member
Viton said:
The Ford "superstat" appears to be a little short in length to do the same job as the OE Tstat, but I don't have one in hand to measure.
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The thermostat is made by Stant. It has nothing to do with Ford. It is the correct dimensions and will hold your coolant at exactly 88 C. The 200tdi uses the same thermostat as Ford modular engines. All late model V8s and V10s.
 
Classic4X4

Classic4X4

Well-known member
If the stant 45779 actually keeps it at a perfect 88 and fits I'll get it tomorrow, install and give an update. Anyone use this with success?
 
R

Red90

Well-known member
Classic4X4 said:
That's a good point... I always assumed it was in farenheight because it barely ever got above ~110... I guess it's possible it's Celsius and running hot but I have to say the block is never very hot to the touch and the air always blows somewhat mildly warm.
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I?m asking about the EGT gauge not the coolant temperature gauge. Maybe post a picture of both.
 
Classic4X4

Classic4X4

Well-known member
Here's my gauge setup
 

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R

Red90

Well-known member
Okay.

1) Coolant Temperature.
The engine should heat up to 190 F at which point the thermostat starts to open. Usually you will see it go to 190 and then drop a small amount. It should stay there until you are working the engine really hard. It will then climb until the fan starts to control the temperature. Something like 200 F should be maximum.

2) EGT
What is reads at idle or part throttle does not matter. All that you should be looking at is what it does at sustained full throttle. When it starts going above 1300 F, then back off on the throttle a bit. If you can't get to 1300, then you have some free power available by increasing the fueling.
 
Classic4X4

Classic4X4

Well-known member
Red90 said:
Okay.

1) Coolant Temperature.
The engine should heat up to 190 F at which point the thermostat starts to open. Usually you will see it go to 190 and then drop a small amount. It should stay there until you are working the engine really hard. It will then climb until the fan starts to control the temperature. Something like 200 F should be maximum.

2) EGT
What is reads at idle or part throttle does not matter. All that you should be looking at is what it does at sustained full throttle. When it starts going above 1300 F, then back off on the throttle a bit. If you can't get to 1300, then you have some free power available by increasing the fueling.
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Really helpful, thank you! When I install the new thermostat I'll take it for a cruise and record the stats. Ive never let the EGT hit 650 (didn't know it was ok to) although the needle will ride right underneath at highway speeds.
 
AdamSanta85

AdamSanta85

Well-known member
Classic4X4 said:
Really helpful, thank you! When I install the new thermostat I'll take it for a cruise and record the stats. Ive never let the EGT hit 650 (didn't know it was ok to) although the needle will ride right underneath at highway speeds.
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Were you able to locate where you EGT probe is? That sounds cool for the highway (65mph+) but maybe its my truck not yours.
 
Classic4X4

Classic4X4

Well-known member
On the 300mile drive on Sunday I made an effort to keep it under 650 (I thought that was the hottest it could get) , it would certainly raise above that if I really gassed it but I can't imagine it getting much hotter than that. If I put the truck in neutral downhill the temperature would cool pretty quickly back down to about 450. With sustained throttle at -60mph ~2000rm and 10 boost psi it sat just below 650 going uphill and around 550 at 65 on flat roads. When I was over 10psi the temperature would increase. I'm not sure I could even get the EGT to 1300 unless the pedal was to the floor for a long time
 
AdamSanta85

AdamSanta85

Well-known member
Classic4X4 said:
On the 300mile drive on Sunday I made an effort to keep it under 650 (I thought that was the hottest it could get) , it would certainly raise above that if I really gassed it but I can't imagine it getting much hotter than that. If I put the truck in neutral downhill the temperature would cool pretty quickly back down to about 450. With sustained throttle at -60mph ~2000rm and 10 boost psi it sat just below 650 going uphill and around 550 at 65 on flat roads. When I was over 10psi the temperature would increase. I'm not sure I could even get the EGT to 1300 unless the pedal was to the floor for a long time
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Stock transmission and 1.4 transfercase?
 
Uncle Douglas

Uncle Douglas

Well-known member
Callsign: delete
Classic4X4 said:
On the 300mile drive on Sunday I made an effort to keep it under 650 (I thought that was the hottest it could get) , it would certainly raise above that if I really gassed it but I can't imagine it getting much hotter than that. If I put the truck in neutral downhill the temperature would cool pretty quickly back down to about 450. With sustained throttle at -60mph ~2000rm and 10 boost psi it sat just below 650 going uphill and around 550 at 65 on flat roads. When I was over 10psi the temperature would increase. I'm not sure I could even get the EGT to 1300 unless the pedal was to the floor for a long time
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Anything less than 1300 is of zero concern. Yes the needle will swing quite quickly, way faster than your speedometer needle :). You are essentially measuring the temp of a fire so lifting the throttle stops the fuel to the fire
 
R

Red90

Well-known member
It is amazing you were even able to move at 650F !!! I'm guessing you read 650 C somewhere (which is 1200 F). As Doug says, you can sit at 1300 F continuously without worry. I have a digital gauge with an audible alarm at 1330.

If nobody has adjusted the injection pump, then it is doubtful you will be able to get that high. Hopefully the turbo does more than 10 psi. Get some boost and fuel in that thing and you will think it is a rocket.
 
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