Talk Morgan Forums Morgan Sports Cars Classic Morgans (pre-CX) heater take of on 1975 4/4

Hello. Just picked up on this query about the crossflow heater take off on the inlet manifold. My take off connections ( both cast Ally) disintegrated a couple of decades ago and I assembled my own with the help of a local Hydraulic/Pneumatic spares supplier who provided suitable brass fittings that would replace the original items. The Burton item posted earlier is also a good option. These have worked well for many years. This item in your photo is new to me and I wonder if it is some form of thermostat to control water flow; but that is just a guess.

If you have disconnected the heater pipes you should ensure that the flow from the water pump connection to the inlet manifold is maintained, as this is (I believe) important to maintain the coolant flow through the engine.
Hope this helps.. Mike.(1971 4/4 4seat)

Is it a take off for a late Kent engine with the Weber 32/26 DGAV carb?

The 'A' in carb designation denotes an Automatic choke plumbed into the cooling system so that the choke closed when the engine got up to operating temperature??

Arwyn

When I did some work on my 73 4/3 with cross flow I asked a lot of people about flow through the manifold as I wanted to I stall a valve to control the heat. Every answer I got said it would be fine without the flow.

I agree with Arwyn. Also even if a manual choke is carb is in use, the inlet manifold chamber immediately below the carb chokes will not get warm as quick if the coolant flow has been blocked. I am also unsure of the coolant flow spaces in the cylinder head, and any restriction to this might not be a good idea. I believe the crossflow heads are known to crack, so my view is to play safe. Mike

This was suggested on the FB group

Ford Capri Mk1 1600GT Heater Valve

https://www.ebay.com/itm/125666980618

That is the same heater valve I have fitted to my 1975 4/4.

Tom's is a 1975 too. I think we have a winner !