Trying to plump in for WVO conversion and having trouble deciding where to T back in. Is coolant pushed toward the monovalve or toward the waterpump?

Thanks,

John

The pump has a flat bladed impeller. So the flow moves parallel and toward the motor, then exits perpendicular to it.

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It pushes it towards the monovalve....I tested mine for function while I had the old monovalve out for replacement.

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Thanks DBHD and Pete, I had the return Teed in between the Pump and Monovalve which would be a high pressure area. I need to be in low pressure to the coolant can return and get sucked along. I'll move it to inbetween the Aux pump and engine.

I believe the two responses are opposite answers. If the coolant exits the motor perpendicular to the motor (?), then isn't it headed toward the block?

It depends on which vehicle you have. But coolant flow will exit the pump perpendicular of the pump motor.

You do know this thread is 11 years old right?

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When we speak of motors in this fashion, we are referring to the main shaft. Almost every type of pump you see with a line coming into the center of some cylindrical shape (at the center of a circle) will be the supply.

Just like a turbo, the exiting fluid (air is a fluid) will be sent from the line perpendicular to the main spinning component or shaft.


Whats wrong with keeping related info on one thread? Information transcends time.

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Thanks for the info. My car is 32 years old so an 11 year old thread is okay. I don't think the flow has reversed since then.

This is where I am getting conflicting information. The hose exiting the central shaft of the motor points toward the monovalve. The perpendicular hose goes to the block. If the coolant is exiting perpendicular, then it is flowing to the block. But others are saying the fluid is traveling toward the monovalve. So I'm getting conflicting answers. I think I will start the car and see if I can determine which tubes heat up in which direction. I don't want to take it apart and test it in a bucket of water.

Post #3 from 2005 was wrong and still wrong today. Flow is from monovalve to aux pump back to engine.

jimmypete, start the car and feeling the hoses is a great test. You will find the hose coming out of the head (by the oil filter shousing) is the first to heat up. From there, it goes into the firewall, down to the cabin heater (so you get heat faster), exits up the firewall to the monovalve, down to the aux pump, back to the engine.

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I believe this is correct. I will check the hoses for heat movement next time I have a chance. I figure I'll run it for a while with the climate control turned off. That should leave the aux pump off. Once I feel heat on the back of the engine (the hose leaving the head) then I'll turn on the heat and feel the metal tubes and hoses for heat travel. It'll be next week before I can do that, but will report back. on my findings.

Funola is right. In fact the monovalve depends on the light vacuum from the aux pump in order to function properly. Sad to see mis-information persist for sooo many years

A WVO (or other additional) coolant loop should be sourced by being teed into the coolant outlet near the oil filter, and returned by being teed into the discharge side of the aux pump between the aux pump and the engine block. To prevent the coolant from flowing backward in the WVO loop it needs to have its own transfer pump located anywhere convenient. This loop will have an outsize affect on cooling the engine since OEM coolant flow through the head is not that great... which is why turning on your heater in hot weather instantly cools the engine down.