Upon hot start (heatsoaked) the res coolant (green) is the hottest until the coolant starts flowing then it stays within a couple degrees of of HEX out (blue).

I should have offered a legend previously.

ICT1 - Green - Coolant reservoir / IC in
ICT2 - Red - HEX in / IC out
ICT3 - Blue - HEX out / to coolant reservoir

 

Also, the first three snips are from the same log and ambient temps were in teh low 70's. The 'boost' snips are from a separate log with ambient temps in the upper 70's iirc.

 

Pretty sure kb recommends tank to pump to hx to ic unless using ice. Thrn it canbe tank to pump to ic

 

Can you tell me
What is your air temps pre/post ic compared to water temp pre/post ic?

 

Only air temps I have are IAT (purple) which is post IC in the tub and AAT (blue) which is pre-compressor in the intake tube. Post-compressor/Pre-IC could be calculated if I knew the actual pressure drop across the IC. Using post-IC MAP would get it close though.

For water temps, ICT1 (green) would be pre-IC, ICT2 (red) would be post-IC.

 

If you know compressor efficiency and boost you can get there from before the rotor temp. I dont know about KB, but magnuson and whipple both have AE charts to show efficiency.

 

KB doesn't publish anything like that. Weeding thru all the BS on their site I did find these numbers a while back which I used for my boost calculation spreadsheet.

Per KB supercharger dyno test, 2.8H efficiency is 85% @ 14.5psi (12K rpm) to 91% @ 26psi (17000 rpm)

 

So looks like a 10' rise in water temp.
Air temp 237 post ic.

Might be time to invest in a custom intercooler. Built for under the blower.???

 

There is no way they are 85-90% adiabatically efficient. Not even gas turbine axial and centrifugal compressors are that good. I would guess closer to 60-70% at most.

You can figure out the IC pressure drop by figuring out max theoretical boost based on 100% volumetric efficiency of the blower and engine and compare to the measured boost pressure. The difference is your intercooler pressure drop.

If you do get a custom intercooler, have it made from copper!

 

Don't know yet. I still have some tests I want to run before making that decision.

-do some static flow tests with artificial cooling (ice to res) to compare ict thruout the system
-get a log of cruise and wot with the pump disconnected to compare ict/iat.
-get a log of wot directly after artificial cooling (ice to res)

Depending on outcome, I may jut remove everything and spray about 20gpm of meth when in boost.