I've thought of your 170 T bucket often, and how well it does, C23.
In 250 engine swaps in to round body Falcons, its a great system...the radator support bracket prevents organising a really good conventional fan. It allows you to run serpintie drives, blowers, bigger alternators, an EWP liberates a huge amount of wasted space.
Due to the design, to use the EWP Stewart Components electrical water pump,
http://www.stewartcomponents.com/index. ... ry&path=63
you
just have to have enough free capacity. It works in most cases, but on the higher end, the system lags.
That's why there a different stages of kit, with extra management on higher end controllers. Some are best as just supplementry systems, for sub 90 cubic inch cars like A series Mini's where one kind is sensational.
The E558, it'll work anywhere with 55 US gals a minute flow is required.
Key thing is that its an aftermarket electrical pump that does a great job, but its not a miracle device.
The way the device was marketed in the US set it self up as a target early on. I like the part, and it will work 9 times out of 10. About where balldrick had it, at the 300 hp level, its fine. Past that, you just have to check the free capacity. An engine is a heat pump, and you tkae heat out by the right flow rate and the right heat exchanger, the water pump won't work miracles.
The Pring and Edgar method of checking the boiling temperature is a good basic way to check the pump operation. 150 degrees F is crook, 212 deg F is great. You do it before replacing the water pump. If the EWP keeps the unpressurised boil rate at the same as stock or higher, your all good.
Plenty of stock Windsor, Cleveland and Lima water pumps are no good stock. The alloy Boss 302 impellor is very good.
If it drops, you'll need extra radiator capacity to keep the themal stress at bay.
Same deal with thermo fans. Bob Pinnell from Capri and Cortina V8 components, and David Vizard reitterated it, ....thermo fans don't give the nessary wind rush compared to a high pitch engine driven fan. The less blades, the greater the pitch. More blades reduce pitch.
The cooling fans work by demand managment, not by peak wind rush. The work, but they work because they are demand mamaged by heat sensors, and that influences basic electrical requirments on your alternator circuits.
Modern control systems make a less efficent water pump, cooling fan or electric fuel pump work. In terms of physical performance properties, new technology is built down to a price, to get a satisfactory result.
Net positive suction head, the abilty for a pump to static lift, is worse with electric pumps than the old fashioned metal impellor.
The plus is the other freedoms the kits give.