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1974 4/4 heater #641829
02/06/20 08:15 PM
02/06/20 08:15 PM
Joined: Feb 2019
Posts: 126
Norfolk
T
thelastgizmo Offline OP
L - Learner Plates On
thelastgizmo  Offline OP
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T

Joined: Feb 2019
Posts: 126
Norfolk
Is there a heater valve on this age car? If not can one be fitted without compromising the water flow. It got a bit warm around the knees driving in the sunshine today!

Re: 1974 4/4 heater [Re: thelastgizmo] #641830
02/06/20 08:18 PM
02/06/20 08:18 PM
Joined: Nov 2018
Posts: 1,713
Northants, UK
TBM Offline
Talk Morgan Enthusiast
TBM  Offline
Talk Morgan Enthusiast

Joined: Nov 2018
Posts: 1,713
Northants, UK
I fitted one to mine, controlled by Bowden cable. Has a bypass circuit so just cuts off water flow to the heater matrix,

You can just see it on the right of this picture.


[Linked Image]


1972 4/4 4 seater
Too many ratty motorbikes
Re: 1974 4/4 heater [Re: thelastgizmo] #641883
03/06/20 08:43 AM
03/06/20 08:43 AM
Joined: Feb 2019
Posts: 126
Norfolk
T
thelastgizmo Offline OP
L - Learner Plates On
thelastgizmo  Offline OP
L - Learner Plates On
T

Joined: Feb 2019
Posts: 126
Norfolk
Thanks TBM. I see you must have a different sort of heater to my '74 model. I have a bulkhead mounted box with horizontally opposed inlet/outlet pipes. One of my hoses comes from the front of the engine via the nearside side of the engine. I also have twin circular outlets facing rearwards on the blower box. Seems they added these in 1974 for demister vents (which I don't have!).
I'll look out for the valves with inbuilt bypass.
I see you have fitted your uprated air filter. I must get one to replace the grotty wire gauze filter on mine.
Is that an after market exhaust manifold?
[Linked Image]

Re: 1974 4/4 heater [Re: thelastgizmo] #641887
03/06/20 09:00 AM
03/06/20 09:00 AM
Joined: Nov 2018
Posts: 1,713
Northants, UK
TBM Offline
Talk Morgan Enthusiast
TBM  Offline
Talk Morgan Enthusiast

Joined: Nov 2018
Posts: 1,713
Northants, UK
Originally Posted by thelastgizmo
Thanks TBM. I see you must have a different sort of heater to my '74 model. I have a bulkhead mounted box with horizontally opposed inlet/outlet pipes. One of my hoses comes from the front of the engine via the nearside side of the engine. I also have twin circular outlets facing rearwards on the blower box. Seems they added these in 1974 for demister vents (which I don't have!).
I'll look out for the valves with inbuilt bypass.
I see you have fitted your uprated air filter. I must get one to replace the grotty wire gauze filter on mine.
Is that an after market exhaust manifold?


Similar system of pipes with mine -' hot' feed comes from inlet manifold and goes into heater matrix, and then it goes from matrix to a union on the water pump. Got the valve and bowden cable from eBay - Example Bypass Valve

Made a small bracket for the heater control and cable and it fits the opposite side of the steering column to the choke cable.

Filter is a 'deep' K&N. I had a shallow one, but didn't think there was much clearance from the lid of the filter and the top of the carb so bought a deeper one.

Manifold is a larger bore stainless Librands one, and then I made a large stainless side exit exhaust to join to it.


1972 4/4 4 seater
Too many ratty motorbikes
Re: 1974 4/4 heater [Re: thelastgizmo] #642018
03/06/20 03:53 PM
03/06/20 03:53 PM
Joined: Feb 2019
Posts: 126
Norfolk
T
thelastgizmo Offline OP
L - Learner Plates On
thelastgizmo  Offline OP
L - Learner Plates On
T

Joined: Feb 2019
Posts: 126
Norfolk
I think I may try an electrically operated valve. I have a spare switch on the dashboard. Seem to be a few around.


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