The V8 Owners Forum -

i am currently converting my Kitcar RV8 from Edelbrock/Holley to Quad Delorto's DRLA's
i am using the Rovercraft manifolds with the rear coolant ports sealed and the front ports feeding into a thermostat housing from JE Devs.

The thermostat housing has once 38mm feed to the radiator via a fan switch. C - G
Rad to Pump return H - F
I have a header tank with 19mm feed from the bottom to Pump Housing A - E
8mm return at the top of the rad to the header B
With a pressure relief cap with overflow tube to the floor. My questions are, i now have D with no function. can this just be capped off.
can D & E be used for the same function i.e. can A go to D if it is easier to connect to it?

i have read that people connect A to FH with Tee off, is this a better way for flow?

any advice gratefully received

I realise i probably should have mentioned it is a Rover V8

I guess it is an early rover front cover and water pump with the distributor driven oil pump. I believe the two connections at the rear of the pump are just another inlet to the pump, usually connected to the bypass and heater returns. The header tank is usually plumbed into the bottom hose on later engines, early ones it was just to the top of the radiator.

I don't think blanking off the connections at the rear of the pump, E &D should cause any problems, on some front covers they were not drilled.

I can't your thermostat bypass circuit?
When cold and the thermostat is closed you need a circuit to still flow coolant through the engine.