Pump????

[88bluestar]

Which pump do you think is better?
It' an open system with no thermostat, single pass radiator running straight water.

[mag2555]

Not sure about the pump thing, but those ribbed Hose's make for a good amount of reversion along with the turbulence also!

[Kevin Johnson]

I am sure they saved a few cents per unit on the top one.

[ProPower engines]

If an oil pump cavitates you loose pressure and volume.
water pump works 5the same basic way only its not really trying to build that much pressure.

[engineguyBill]

Thermostat should be used in order to efficiently control engine temperature. Use a low temp 'stat, 160 degree or so and drill a few small holes in it so that a limited amount of coolant will circulate during the time that it is closed. If you are not running coolant, use one of the available coolant substitutes such as Evan's products, etc. Straight water should be avoided in any automotive cooling system.

The pump on the right is probably more efficient, as the impeller fits within the pump housing much closer therefore excess coolant is not lost between impeller and housing. Also, your system will work better if you utilize the bypass hose from the pump to the intake manifold. There is no advantage to be gained by blocking this bypass. The bypass hose and the holes drilled in the thermostat allow the engine to transition from cold to operating temperature much more efficiently'

Also, remember to use good quality fan (s) and a shroud that fits closely around the fan.

[88bluestar]

This is for a circle track engine, we’ve found they work better minus the thermostat. The left one is a short pump while the right is a long

[88bluestar]

100 degree weather, low humidity.

[RCJ]

I would use the one on the right.I've made plates and spent some time getting the pumps tighter fitting ,never made much difference.I believe the heads and block limit flow not the pump.One of the biggest changes was to follow the directions on a felpro 1003 head gasket and drill holes in the block by the center exhaust ports.

[88bluestar]

1003 fel pro is what I'm using. Eq iron cylinder head.

[rp930]

Get a Stewart pump and run A 160 HD Autozone thermostat. Drill a couple small holes as mentioned above. Did you drill the block for the head gaskets? Made a big difference on mine.

[Warp Speed]

I would NEVER run a thermostat in a racing application.........ever!

[tuffxf]

G,day Warp,
Do you mind if I ask why

Cheers
Paul

[Krooser]

The one on the right.

[Baprace]

I would NEVER run a thermostat in a racing application.........ever!

Perhaps you could explain why no T stat in your engines.

I would never send out an engine without a thermostat on a weekend racer, I need the oil up to temp. BUT the cup cars seem to control temp with tape on the air inlet.

[gunt]

i just know that the one with the rear plate on the right , the same with the subaru , both are available , and the plate has 15% better flow