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Can anybody please clarify the cooling connections on a Rover V8. I`ve just swapped over to an Edelbrock Performance manifold. Hopefully the picture I have posted has come out above. I`m not running a heater either. On the old standard manifold there was a water pipe running under the manifold and an extra connection on the old manifold at the thermostat end. I therefore now have one connection less but still the extra pipe if that makes sense. I guess I need to use this under manifold pipe still and on the diagram this is the pipe with ends G & H. I could do with an idiots guide! So by my reckoning is it:-
B to F
A to C
K to H & I using a T connection? or K to H and block off I?
D to G (what happens to E?)
Where does J connect to?

Could I loop D & E together as no heater?

Hopefully someone can clarify.
Thanks

Cooling thread

Cheers for the link. I had already seen that thread but it doesn`t answer all. It doesn`t mention the connection (I) on the back of the manifold in my diagram. Has anyone used an Edelbrock manifold and can confirm things for me?

I'll need to have a wee look at the pics to refresh my memory, but they're on my other computer which is being fixed.

I'm pretty sure though that either H or I was blocked off...

Scootz - `I` was and still is blocked off at the moment

Is 'I' the one that comes directly out of the back of the manifold? I have been reliable informed that this can be blocked off.

Yes `I` is the one that comes directly off the back of the manifold.

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Does anyone think this set up will work ok? I`ve removed the pipe that was under the manifold and `T`d in the expansion tank top hose to the rad top hose. Hoses D & E are simply joined together as these would ordinarily feed a heater I believe.

I`ve plumbed the cooling system as per my diagram in the above post and ran the engine today but I don`t think the water is circulating. This is based on the fact that the water level in the expansion tank wasn`t dropping (when I knew the system wasn`t yet full) and also the return top pipe into the expansion tank there was nothing coming out of this. Am I missing something? Ideas please anyone?
Nick

I've had this before. When I stripped the little darling there were no vanes on the water pump!

Might be worth having a look

Cheers!

Completely wrong.

It will just airlock -

Go read the cooling threads on the V8 Forum

quote:

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Originally posted by snippy
I`ve plumbed the cooling system as per my diagram in the above post and ran the engine today but I don`t think the water is circulating. This is based on the fact that the water level in the expansion tank wasn`t dropping (when I knew the system wasn`t yet full) and also the return top pipe into the expansion tank there was nothing coming out of this. Am I missing something? Ideas please anyone?
Nick

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I`m more inclined to think I have got it `wrong` as opposed to the pumps vanes being missing because it all worked fine before I changed the manifold.

Andy S - how is your 4.0L V8 plumbed?
I will check the V8 forum as well though - thanks.

Bit late now I will write something up torrow - do you have the thermostat cover with the bypass? - have a picture of the manifold you have? - I run a Wildcat Spider manifold so its a bit different to most.

quote:

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Originally posted by snippy
I`m more inclined to think I have got it `wrong` as opposed to the pumps vanes being missing because it all worked fine before I changed the manifold.

Andy S - how is your 4.0L V8 plumbed?
I will check the V8 forum as well though - thanks.

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Thanks Andy. My thermostat housing only has the one large hose connection for the rad top hose. I am using an Offenhauser performance manifold which only has a single connection at the rear besides the thermostat housing which is bolted to the manifold at the front. I don`t have a thermostat fitted inside the housing. I also have no heater system on the car. My water pump has the 3 connections (1 large and 2 smaller).

Number one always use a thermostat - a summer stat from an early mini at 74 degree its a QTH 101 something like that

You should have one of these thermostat covers -



The small connection G to one of the return connections on the back of the front cover. E There is a special offset hose available for this.
The other connection you blank off D

The connection at the back of the manifold - you blank off completely H / I

The header tank bottom connection K needs to run down to the water pump inlet C and tee into there between the rad return A and the pump. Close to pump as possible.

Main thermostat/block connection F to the rad flow connection. B

Ideally you should drill and tap a small connection in the manifold behind the thermostat (see that nice triangular pad in the picture) - highest pressure point - and run that back 4-6mm to the header tank J. This should be at the highest point on the engine to self bleed.

And that will do it.

Andrew

[Edited on 3/3/12 by Andy S]

Andy,
many thanks for taking the time to post the info above. Clearly I need to invest in a different thermostat housing for starters. I`ll get her plumbed in this way and hopefully all will be good!

Nick

I am installing a Rover v8 with edelbrook manifold for someone but need to plumb in a heater as well.Am I correct in thinking the heater would connect between the back of the manifold I and the water pump D?.
Paul

Yep

quote:

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Originally posted by paulf
I am installing a Rover v8 with edelbrook manifold for someone but need to plumb in a heater as well.Am I correct in thinking the heater would connect between the back of the manifold I and the water pump D?.
Paul

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