IC pump run time options

[SBNova]

Has anyone done any testing of when to run the IC pump? I have mine hot wired but hacve seriously been thinking about just changing the temps in my chip to enable it at different times.

I have not tried these fields, but are considering theseto make changes;
0x00B5 KFANMTCL Cold Fan Enable MAT Temp Threshold (Low) 45.5 Deg. C
0x00B6 KFANMTCH Cold Fan Enable MAT Temp Threshold (High) 45.5 Deg. C

My personal theory is that this may work like a thermostat for coolant, where once you hit a certain temp the pump would kick on and provide water that is cooled (sitting far from heat, in the lower IC) and make more of an impact on IAT's. Now I have a stock pump, so I know that the water wont move fast, and will heat soak some in the lines anyway.

I was just thinking that like a radiator- if the water moves too fast through it it doesnt cool off, similair to continually moving the water. A car with no thermostat usually runs cool for short periods but gets hotter as time goes by. So giving it a chance to "cycle", it may work well.

Any opinions?

 

[KETCH-UP]

Re: IC pump run time options

I think running the pump constant would be better. The pump "off" time would give the lower unit more cool down, but at the same time the upper unit would heat soak more.The pump "on" would initially drop temps quick, then level out. I think overall the MAT's would be higher.

 

[sytyguy]

Re: IC pump run time options

FWIW, these constants have been active (for IC pump activation at about 19 degC and above) since version 10 of the Ultimate, IIRC (around '99 or '00). And, I think as small as our stock unit is, the last thing we have to worry about is lack of heat absorption. But, it'd be neat to try. Let us know what you find out.

Hood

 

[jwaller]

Re: IC pump run time options

I keep asking myself why in the world would you want to turn off the IC pump?

only thing I have come up with so far is to pass emissions and blow up your motor. dont do it, waste of time.

 

[SBNova]

Re: IC pump run time options

I kow it would heat up while under normal driving, I just thought that maybe I could find an average running IAT temp and set the IC pump to come on at just higher than that. So when I am driving and get into boost it would get a cooler "shot" of IC fluid.

For those that take their trucks to the track, I doubt it would work. This is just a thought for those that drive our trucks, for extended periods around town where the lower IC doesnt get much air flow. I think I am heat soaked after 30 minutes, and maybe cycling the fluid would help.

 

[sytyguy]

Re: IC pump run time options

I kow it would heat up while under normal driving, I just thought that maybe I could find an average running IAT temp and set the IC pump to come on at just higher than that. So when I am driving and get into boost it would get a cooler "shot" of IC fluid.

For those that take their trucks to the track, I doubt it would work. This is just a thought for those that drive our trucks, for extended periods around town where the lower IC doesnt get much air flow. I think I am heat soaked after 30 minutes, and maybe cycling the fluid would help.

I'm thinking that there would be an adverse effect of equal proportion from the water that has been sitting in the upper IC. While you may get a cool shot when the water from the lower IC gets circulated up, it won't take long for that really hot water to get back around. Plus, it's gonna be very hard for the lower IC to have any kind of immediate effect on that hot water (think about leaving a home A/C unit on at 75 degF all day, keeping the house at a constant temp by cutting on/off every so often, versus cutting the unit on at 3:00 in the afternoon when it's 95 degF inside and expecting it to cool the house down.)

Also, the heat is going to spread through the lines and down towards the lower IC at a consistent rate (it'll obviously stop spreading at some point, but it will have an adverse effect on more than just the water in upper IC.) I think you'll have a lower average temp by having the pump run all the time.

But like I said, it's worth a try. Worst case scenario - you found a way that doesn't work (think Edison/light bulb.)

Hood

 

[SBNova]

Re: IC pump run time options

Yeah I understand what your saying. I think I will give it a try, and know for sure if it works or how bad it is.