I always thought that at 90mph, the sea pump impeller vanes were not really doing much as far as pumping water?

Good chance.

We can get even deeper into this without trying.

What if 1 engine is spinning 6200rpm at 90mph and another is at 5000rpm at 90. ?

I'm not sure on the pulley ratio to the sea water pump.

Ithink what mike T was getting at is that Teague is saying a an12 is sufficient to get your pressure and the fine tuning to get the desired pressure is up to the end user.
At 90 you are covering 132 fps, btw.

bingo,we have a winner.i can tell you that if you look at the dump on my boat at 100 mph the amount of water coming out is amazing.i don,t need a gauge to tell me i am moving a ton of water,but i understand that some do.i have an adjustable valve on mine that pops open if i get a pesssure spike when reentering the water at 100 plus,this is to keep from damaging the core.

i will bet that if you call the blower shop and ask them about their testing on cooler line sizes all you will hear is cricket,s.same with ke,but bob teague will give you actuial facts from his testing,that is why i plumed mine his way.

I do actually need gauges, im not that smart! . I dont like to guess how much oil pressure i have, how much hot my oil temperature is, or how warm my engine is running, or guess how much fuel psi i have.

I do plan to make sure i follow teagues advice on psi in the core, as well as monitor intake temps while running.

Dan did actually talk to the blower shop. They and several others have done quite a bit of testing with their cores, and actually have some data on the inlet temps and power changes. I have yet to see anything like that published from teague, other than bolt on our product and gain 75-100hp, but never any dyno testing data.

Blower shop tests their cores to over 100psi , and wants water flow. Thats why they, whipple, eickert, and even now teague, offers high flow end caps, with 3/4npt fittings, to replace their 1/2 npt fittings . Why would they bother making these new end caps, if the old -12 to 1/2npt was enough?

Now they offer high flow endcaps. Why?

http://teaguecustommarine.com/em0011...illet-end.html

Per Blower shop:

1. (2) -12 IN and (2) -10 OUT as they want to be sure the core is pressurized and full of water.
2. Run as much water as possible psi is pretty irrelevant as those cores are tested to 120psi.
Things to consider:
Single -12 pickup may clog with debris easier than a larger pickup.

I know I don`t know anything but if I were to plumb an intercooler it would have a minimum -20an pickup or 1 1/4" line. This way the pickups would be as high as possible to prevent any speed loss. Probably overkill but I`d rather err on the side of too big then too small.

Correct they need some pressure to ensure that its full.

Excuse my ignorance - how much fkin water volume do these small cores need ? This water demand is really sounding ludicrous.

Yes, I know, Roots blowes create heat.....but in no way the same amount a 598cid engine at full song pushing a condominium thru the water at 90-100MPH. I say this because the water flow discussed is surpassing what it akes to cool a big azz motor at big rpms. Remember, the same water going thru the motor has already gone thru the oil cooler....so, it's feeding both cooling systems. And now, we have this small core innercooler under a Roots supercharger that needs half the lake or ocean too cool it.

Uuugghhhh. LOL.