IAT's Question

TYTILIDIE

METH HEAD
Ive been doing some runs and noticed Im losing 3-5 tenths. My IAT's are up from 105* to 150* at the end of my run. Same outside temperature. My IC pump is working and the IC is cool to the touch. Anyone have any ideas on what could cause this?

Mike
 

TYTILIDIE

METH HEAD
Re: IAT's Question

My bad run starts out at 77.9*, hits 80* at shift into 2nd at 4275 RPM, hits 96* into 3rd at 4425 RPM, 100* at 60 MPH, 110* at 66 MPH, 110* at ^*MPH, 120*@74MPH, 131@ 80MPH, 140*@85MPH, 150*@ 92 MPH.

My good run is like this
Starts @ 57* 60*@36MPH, 70*@54MPH, 80*@68MPH, 90*@81MPH, 100*@91MPH, 105*@95MPH.

Mike
 

dgoodhue

BuSTeD 4.3
Re: IAT's Question

I think that is relatively normal. If the intercooler wasn't cool to the touch and the IAC was getting up around 180-200 degree then IC pump/circulation isn't working.
 

TYTILIDIE

METH HEAD
Re: IAT's Question

Im pretty sure its circulating cause when its not the upper line you can see the air in it. Funny thing I noticed this morning though, usually whe I turn the IC on the return line has about 4" of air in it and the water drains down, now all of a sudden its solid fluid. Im wondering if my pumps not pumping as fast.

Mike
 

Andreas

New member
Re: IAT's Question

If you had air in the system before, not reffering to the 4", the pumpwheel could be damaged. That leads to less flow.n However it seems that your pump has less capacity now than before.
 

TYTILIDIE

METH HEAD
Re: IAT's Question

I have clear hoses at the IC itself all the way to the fender and the air that you can see is right when it comes out of the IC. From that point on its solid fluid. Is the pump wheel repairable or shouls I get a new pump all together?

Mike
 

dgoodhue

BuSTeD 4.3
Re: IAT's Question

I think the pump wheel probably is fine, what your describing is normal (atleast as far as I know) I honestly don't think the pump speeds even make that much of a difference as long as the coolant is circulating.

On an 80-85 degree day, my MAT will started out around 100 degrees and will hit as high as 145-150, especially if I have made a few runs. On 60-65 days at the track, my MAT's will start out 80 and I will hit 110-20 degrees. I have a ATR aux IC. If you want lower MAT, get alky/water injection or switch to an air to air. Its just the limatation of the system.

(FYI I am only running 16-18psi of boost on a stock turbo)
 

TYTILIDIE

METH HEAD
Re: IAT's Question

The outside temp s here were 35*. Something isnt right. The motor sounds like it always does but the water circulating doesntlook normal. I may get a new one just incase. I cant handle going from 14.1 to 14.6.

Mike
 

dgoodhue

BuSTeD 4.3
Re: IAT's Question

Oh, so you hit 150 with 35 degrees outside temp? You have a circulation problem is that is the issue.
 
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