Rover v8 cooling system diagram
Discussion
Hi - Wonder if anyone could help (and I would so appreciate it) - I have a kit car that I am bulding that is using a rover 3.9 v8
I cant figure out the cooling system - and if someone has a diagram of the water flow, and pipes that need to be connected in the most *simple* form it would be so great.
I am NOT using a heater system
Mainfold is a Edelbrock performer
I just need the most simple diagram possible - if anyone could help i would be seriously greatful (and seriously happy).
many thanks in advance,
Stuart.
I cant figure out the cooling system - and if someone has a diagram of the water flow, and pipes that need to be connected in the most *simple* form it would be so great.
I am NOT using a heater system
Mainfold is a Edelbrock performer
I just need the most simple diagram possible - if anyone could help i would be seriously greatful (and seriously happy).
many thanks in advance,
Stuart.
Don't have a picture to hand but I can describe it if it's any help.
The water pump is at the front of the engine. All the external connections to the waterpump are inlets. The pump sucks the water in, squirts it into the two sides of the block, it flows up into the heads. Each head has an outlet at each end (four in total). These connect into the intake manifold. Uually, the rear ones are blanked off by the manifold, the front ones are collected into a water chamber at the front of the manifold. At this point it depends what manifold you have, but typically the manifold will have a stat housing on the front that the top hose connects to, and a bypass outlet. Some will also have an outlet to feed the heater circuit. Most will also have tappings for a coolant temp sender.
There are a couple of different arrangements for the water pump, but the common pre-serpentine one has two small inlet ports on the top as well as the main inlet. Conventionally, one of these is used for the bypass, and the other is used for the heater return. So, the bypass is a small hose connected directly from the intake manifold to the top of the pump, and the heater circuit is another small hose connected between the intake manifold and the top of the pump. If you have a stat fitted to the manifold, you *must* have a bypass between the manifold and the pump. If you fit a remote stat you must still connect a bypass to the top of the pump, and it must go up to the top hose i.e. without any downward sections. If you have a preserpentine engine this is very important because without this you will get an air lock inside the pump.
Some engines also have a throttle body heater which takes a small feed from the top of the inlet manifold and tees into the heater return. This is best left disconnected.
Apart from that you have the main top hose to the top of the radiator, and the main bottom hose from the bottom of the radiator back to the main pump inlet. You need an expansion tank too, and this is usually connected in parallel with the radiator as high up as possible so that all air from the top hose naturally lows up to the expansion tank, with a very small inlet to keep the water flow rate up and keep bubbles in suspension, and a larger outlet to the bottom hose to keep the flow rate down and avoid pulling bubles down out of the tank.
Hope that helps.
The water pump is at the front of the engine. All the external connections to the waterpump are inlets. The pump sucks the water in, squirts it into the two sides of the block, it flows up into the heads. Each head has an outlet at each end (four in total). These connect into the intake manifold. Uually, the rear ones are blanked off by the manifold, the front ones are collected into a water chamber at the front of the manifold. At this point it depends what manifold you have, but typically the manifold will have a stat housing on the front that the top hose connects to, and a bypass outlet. Some will also have an outlet to feed the heater circuit. Most will also have tappings for a coolant temp sender.
There are a couple of different arrangements for the water pump, but the common pre-serpentine one has two small inlet ports on the top as well as the main inlet. Conventionally, one of these is used for the bypass, and the other is used for the heater return. So, the bypass is a small hose connected directly from the intake manifold to the top of the pump, and the heater circuit is another small hose connected between the intake manifold and the top of the pump. If you have a stat fitted to the manifold, you *must* have a bypass between the manifold and the pump. If you fit a remote stat you must still connect a bypass to the top of the pump, and it must go up to the top hose i.e. without any downward sections. If you have a preserpentine engine this is very important because without this you will get an air lock inside the pump.
Some engines also have a throttle body heater which takes a small feed from the top of the inlet manifold and tees into the heater return. This is best left disconnected.
Apart from that you have the main top hose to the top of the radiator, and the main bottom hose from the bottom of the radiator back to the main pump inlet. You need an expansion tank too, and this is usually connected in parallel with the radiator as high up as possible so that all air from the top hose naturally lows up to the expansion tank, with a very small inlet to keep the water flow rate up and keep bubbles in suspension, and a larger outlet to the bottom hose to keep the flow rate down and avoid pulling bubles down out of the tank.
Hope that helps.
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