A buddy of mine used a Flow Kooler on his road race car. After a couple of sessions the car was overheating terribly. After it cooled off in the paddock we couldn't figure out what was going on... I took the belt off and spun the water pump pulley and thought it turned too easily. We took the water pump off and the impeller fell out on the ground...
To the best of my knowledge only Edelbrock and FlowKooler have decent impellers. Everything else is the stock design. Some of the "high performance" or "high volume" are the stamped steel impeller with the round plate welded or riveted to it. Which actually does help, but they still churn more than pump at high RPM.
It does seem possible that either the impeller or pulley flange would fall off if the impeller didn't have enough clearance to spin freely, and got bound up. It's a shame they are having build errors with the FlowKooler pumps, I have a shorty version on an SN95 that does a great job. I also have an older Evans SN95 pump that has a cast, curved vane impeller which also does a great job, but they haven't been available for quite some time now AFAIK.
Some time back I bought a "highflow" Stewart pump, only things high about that pump was the person that wrote the sales copy, and the price. Total hoax.
Find Edelbrock Victor Series High Performance Street Mechanical Water Pumps 8840 and get Free Shipping on Orders Over $99 at Summit Racing! Get maximum cooling for the street or track. Edelbrock Victor Series high-volume water pumps are designed for maximum flow and equal coolant distribution...
Glad I bought my Flowcooler 10 years ago. It's been on and off many times with no issues whatsoever. Thing cooled the Kenne Bell 306 fine and now cools my 11:1 427w even using a 4.375" crank and oversized water pump pulley.
Only if there's cavitation creating microbubbles that reduce conduction between block and water will a higher flow rate not be better. Pressurizing the coolant in the block actually helps cooling, so that's a possible benefit of higher flow rates. It is true that the engine cooling rate versus coolant flow rate tends to level off at a certain point and the gain from increased flow has a minimal benefit beyond that point. Overdriving a stock water pump that doesn't have a backing plate or optimized impeller design is more likely to create cavitation issues compared to a good aftermarket unit.
I had a set of U/D pulleys on the car. Been there 20 years and i never had issues with cooling or charging. Car ran 188* on a mechanical gauge no matter what conditions. Very reliable.
However, with new combo, i figured i wanted to go with reliability over every single HP. I'm also reinstalling A/C, so that was a driving force for putting the stock pullies back on as well.
However, i wonder if the additional flow from the Edelbrock pump would allow me to run the U/D's with the new combo and still stay where i want to with cooling. Of course, unsure how this will affect my A/C output.
This is a bit of a mistaken concept.
As long as there is direct contact between the water and the walls of the tubes, the heat will be conducted to the fins and removed to the air....as long as there is proper airflow through the fins. Even if the water is moving quickly through the radiator, that means more water is in contact with the tubes and releasing heat.
I've had my 90 coupe for roughly 9-10 months. I'll go over the parts list that was given to me. Mileage is unknown on this combo. Could be as much as 50k miles.
But before I go to far, I plan on doing a compression test to see if the short block is healthy.
306 stock internals...
I am thinking that my valve seals are leaking.
I have a set of the older Trickflow castings (sbf-1) and the last time I pulled the upper intake I noticed oil on top of the intake valves. If I go down this path I would like to replace them with the heads on the block. I don't have an A/C and it...
AFR has answered the popularity of Chinese heads. Better parts also:
Looks like its identical casting that Skip white offers,That blue print engines offers,and same identical casting that can be purchased on Ebay as well from...
I'm looking for cylinder head reccomendations for a stock 5.0 shortblock. It's your typical Exploder jy pull that will be in a 2700-2800lb 83 hatch. TKO, 4.56, tubular suspension, custom cam, blah blah blah.
It's a street strip deal that will stay NA, but I may step up to a 347 or stock...
The imaginary scenario is a typical 427 sbf dart stroker making about 600-650 flywheel horsepower. Assuming I am going to be putting this engine into my 1995 GT, would it be practical to use a plenum style intake using the stock computer with a tune? Or would switching over to a carb style...
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