Monitoring Engine Temp - no oil temp

[SVO MkII]

Fair enough, but it _must_ be doing something else (reducing timing/ adding fuel) before it starts pulling boost. For any racing engine, you get concerned at 200* and by 220*, you've either stopped or are short-shifting and have accepted you're going to blow it up while trying to finish. 240* on water isn't even a thing, even if your oil is 300*.

I've got a friend of a friend who is a Ford guy that I think I can get info from, but so far I haven't been able to get him to talk. If I do, I'll pass on whatever I find out.

I hear you. All I can do is look at the data that I have and reference that with the physical experience behind the wheel. Not sure if your familiar with the Track Addict app, but it allows you to record vehicle data, and GPS data, on top of the in car video. I have replayed the laps watching all the vehicle parameters real time as I was lapping the track. I can say with 100% certainty that the engine was producing full power/boost all day long with coolant temps shown in the 230s. Now, I assume that what TrackAddict is receiving via the OBD II interface is the actual coolant temp. It behaves as you would expect during the course of a lap, i.e., moves up and down a bit based on power demanded. But, I didn't program the ECU or Track Addict. Again, I am intrigued by the fact that the factory coolant temp gauge was not way over to the right. Since the factory t-stat is 180 deg, one can assume that the middle of the gauge is somewhere close to 180. If the temp was actually 230+, I would sure as heck assume that the gauge would reflect something on the hot side?

Here's one theory. Maybe what Track Addict was displaying as coolant temp was really cylinder head temp, i.e., a translation issue between the ECU and Track Addict? I could see the CHT hovering in the 230 range more so than the overall coolant temp.

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[ihasnostang]

I hear you. All I can do is look at the data that I have and reference that with the physical experience behind the wheel. Not sure if your familiar with the Track Addict app, but it allows you to record vehicle data, and GPS data, on top of the in car video. I have replayed the laps watching all the vehicle parameters real time as I was lapping the track. I can say with 100% certainty that the engine was producing full power/boost all day long with coolant temps shown in the 230s. Now, I assume that what TrackAddict is receiving via the OBD II interface is the actual coolant temp. It behaves as you would expect during the course of a lap, i.e., moves up and down a bit based on power demanded. But, I didn't program the ECU or Track Addict. Again, I am intrigued by the fact that the factory coolant temp gauge was not way over to the right. Since the factory t-stat is 180 deg, one can assume that the middle of the gauge is somewhere close to 180. If the temp was actually 230+, I would sure as heck assume that the gauge would reflect something on the hot side?

Here's one theory. Maybe what Track Addict was displaying as coolant temp was really cylinder head temp, i.e., a translation issue between the ECU and Track Addict? I could see the CHT hovering in the 230 range more so than the overall coolant temp.

i can't remember do you have a tune but dont use it for track days? according to cobb OTS map notes..

"In order to keep the cooling system working efficiently in the most diverse array of conditions, the temperature threshold for fan operation has been lowered so that they come on sooner."

maybe wouldn't hurt to throw them an email whether or not you're tuned to see what the stock fan curve is like vs what they run on tunes. i dont know if i've ever heard the fans on my EB PP. It's difficult to estimate the air speed coming out of the radiator when your doing over 100mph at road america and whether or not more fan would help. i'm sure it wouldnt be difficult for them to take a stage 0 tune and change the fan ramp.

 

[SVO MkII]

i can't remember do you have a tune but dont use it for track days? according to cobb OTS map notes..

"In order to keep the cooling system working efficiently in the most diverse array of conditions, the temperature threshold for fan operation has been lowered so that they come on sooner."

maybe wouldn't hurt to throw them an email whether or not you're tuned to see what the stock fan curve is like vs what they run on tunes. i dont know if i've ever heard the fans on my EB PP. It's difficult to estimate the air speed coming out of the radiator when your doing over 100mph at road america and whether or not more fan would help. i'm sure it wouldnt be difficult for them to take a stage 0 tune and change the fan ramp.

No tune. Completely stock, except for larger intercooler and external oil cooler. That is certainly a concern, i.e., if the cooling system isn't capable of handling stock power levels at HPDE, it certainly can't handle anything more.

 

[ihasnostang]

No tune. Completely stock, except for larger intercooler and external oil cooler. That is certainly a concern, i.e., if the cooling system isn't capable of handling stock power levels at HPDE, it certainly can't handle anything more.

ah yeah i meant stage 0 as being the stock tune, but modified for you to have increased fan curve

 

[ihasnostang]

from cobb "We lower the desired ECT from the stock setting of 215 to 205."

 

[SVO MkII]

from cobb "We lower the desired ECT from the stock setting of 215 to 205."

Help me understand what this means. Are they referring to a warning message that is triggered at a certain temp? What is the "setting" that they claim to be lowering, and any idea why they do this? Thanks.

 

[HeelToeHero]

I was going to add, if I'm not using the AC in the V8 I see 220F in traffic on CHT. I've definitely seen 230F on track as well.

The ford power pack does turn on the fans earlier now and it's very to go much past 207F in street driving.

Fan settings won't really matter on track as they shut off after a certain speed anyway.

 

[TeeLew]

I really think the first order of business is to cool the water so you can run on track at 190-195*F. FWIW, these engines running as an N/A race engine in an IMSA Lites car is happiest at 180-185*F. Of course, that's completely different tuning, but it's a lot of the same mechanical bits.

A bigger radiator and improved ducting is a no-brainer.

 

[HeelToeHero]

I really think the first order of business is to cool the water so you can run on track at 190-195*F. FWIW, these engines running as an N/A race engine in an IMSA Lites car is happiest at 180-185*F. Of course, that's completely different tuning, but it's a lot of the same mechanical bits.

A bigger radiator and improved ducting is a no-brainer.

Good luck with that. No one is able to run that cool. There's a massive thread in the hpde section.

 

[TeeLew]

Good luck with that. No one is able to run that cool. There's a massive thread in the hpde section.

The GT4 car does. If you want to cool the thing, you just can't rely on the stock cooling system.

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