snippy
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| posted on 16/1/12 at 11:42 PM |
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Rover V8 cooling system connections?
[img] [/img]
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
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Irony
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| posted on 17/1/12 at 12:09 PM |
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Cooling thread
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snippy
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| posted on 17/1/12 at 08:37 PM |
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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?
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scootz
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| posted on 17/1/12 at 08:45 PM |
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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...
It's Evolution Baby!
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snippy
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| posted on 17/1/12 at 08:50 PM |
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Scootz - `I` was and still is blocked off at the moment
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Irony
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| posted on 19/1/12 at 11:37 AM |
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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.
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snippy
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| posted on 20/1/12 at 11:33 PM |
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Yes `I` is the one that comes directly off the back of the manifold.
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snippy
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| posted on 23/1/12 at 09:29 PM |
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[img] [/img]
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.
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snippy
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| posted on 2/3/12 at 06:07 PM |
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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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v8kid
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| posted on 2/3/12 at 06:58 PM |
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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!
You'd be surprised how quickly the sales people at B&Q try and assist you after ignoring you for the past 15 minutes when you try and start a
chainsaw
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Andy S
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| posted on 2/3/12 at 07:14 PM |
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Completely wrong.
It will just airlock -
Go read the cooling threads on the V8 Forum
quote:
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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snippy
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| posted on 2/3/12 at 08:47 PM |
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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.
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Andy S
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| posted on 2/3/12 at 10:39 PM |
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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:
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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snippy
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| posted on 2/3/12 at 11:07 PM |
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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).
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Andy S
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| posted on 3/3/12 at 09:35 AM |
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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]
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snippy
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| posted on 4/3/12 at 10:57 AM |
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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
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paulf
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| posted on 4/3/12 at 09:37 PM |
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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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Andy S
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| posted on 4/3/12 at 11:18 PM |
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Yep 
quote:
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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