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Smith's Heater Restoration

Moss Motors
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Wyliecoyote James Wylie
Comber, Northern Ireland, UK   GBR
The final installment!!!

I think it really sets off the engine bay!


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Ian Williams Avatar
Ian Williams Ian W
Chipping Longjourney, Toofarupnorth, UK   GBR
Steve, I'm trying to persuade mine to give some heat output..

In reply to # 3879906 by SteveZBMagnette MGB guys have no idea how easy they have it...

"Funny. When I got my MGB, I thought to myself, "The heater core and blower fan are right there in the engine compartment, easy to remove and replace if needed". On my Fiat 124 Spider, you have to remove the radio console, and fish around all the wiring to get to the heater core and fan. And stand on your head to replace the heater valve up underneath the dash mounted on the firewall."

AND... on a Magnette, the heater box/valves/controls are also inside the car, and on the later ZB models you have to remove the under-dash package tray and the upholstered kick panels on either side to even be able to get upside down with your head under the dash to get to anything...

And, if you are REALLY into torture and self abuse, try to replace the heater core in an early 2000s Taurus!!! Yipe!

https://get.google.com/albumarchive/112234424386054937434/album/AF1QipM0lleU2P_V_q_eibUlaUviXf6I88E9avBzVUZ8

Who would have thought that people who live on an island in the North Atlantic where it is near constant rain and snow would have really kinda missed the boat when it comes to either heating a car or keeping the inside of it dry? And the passage of time really hasn't improved much! I have several friends with later model Jags who constantly squawk about the leaks and the capricious heat...

I wonder if that is some sort of "stiff upper lip" or character building exercise... "If you are cold, take a coat", "If you are wet, tale a towel!"

IMHO, if they were easy, we wouldn't like 'em as much!

Wyliecoyote James Wylie
Comber, Northern Ireland, UK   GBR
I found my matrix was really full of old crud and that flushing it out made the world of difference to heat output!

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Mick from Scotland Avatar
East Lothian, Scotland, UK   GBR
This and making sure the foam surrounding the matrix was correct sorted mine.......previously the foam let air by that hadn't got the benefit of the matrix.

In reply to # 3886238 by Wyliecoyote I found my matrix was really full of old crud and that flushing it out made the world of difference to heat output!

Wyliecoyote James Wylie
Comber, Northern Ireland, UK   GBR
True!

I got some leftover foam (for free) from a local upholstery shop that I then trimmed to fit and that has made a real difference.

Fire-proof foam is what I used, standard in upholstery nowadays!

earlspoint Avatar
earlspoint Richard Earls
NA, WA, USA   USA
That is far to much work. It is the same process I took restoring my 1st car "strip/wire brush/paint" never again. Remove/disassembly/blast/power coat or plate.
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I do not understand all the hair pulling R&R of these heater units.
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I removed and restored my heater. It is an early model 1969 (never removed) which does not have the cable running thru the unit or the big rubber block, so I found the removal fairly easy, just had to break loose the gasket/seal around the mounting flange. I disassembled the unit removing the flapper housing and removing the flapper and felt seals. This allowed a complete blast and powder coat of all components. Then it was straight forward installing a new increased capacity core (rubber O rings from ACE hardware) new internal foam, new felt seals and finally new seals and clips. Installation was not difficult at all using new SS fasteners.



Vietnam combat Vet - The fight against socialism 1945 - .
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Help prevent LMD.

TJS Avatar
TJS T J Smith
Soulbury, Bucks, UK   GBR
Thankfully my original heater unit still works fine, even if the one speed blower is rather feeble compared to modern day kit.

If and when the time comes to overhaul I may be tempted to cheat and use the upgraded replacement unit from Claytons; see below.

http://claytonclassics.co.uk/parts-upgrades/218-heating-upgraded-heaters-mgb-c-gtv8

Wyliecoyote James Wylie
Comber, Northern Ireland, UK   GBR
Those Clayton units seem to get very good reviews, if a little pricey!

I am more familiar with them from the Land Rover world.

My fan has sadly packed in now, think it's just a wiring problem though!

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