MGB & GT Forum

Hi all,
Well the wife called at 7:30 AM to say the MGB left her stranded. I got dressed and headed out to meet her. Found it nearly empty of coolant. Source of leak was not readily apparent, but I had brought a gallon with me and was able to fill it. I drove it home, and when I got there, popped the hood and of course the heater control valve (Moss part only a few months old) was dripping steadily. Got her off to work in her other car, and started searching for alternative heater control valves. After a couple hours digging I found these two items, one MUCH cheaper then the other, both the same part it appears. Here are the links:

https://www.ebay.com/itm/262857678191?_trkparms=amclksrc%3DITM%26aid%3D777008%26algo%3DPERSONAL.TOPIC%26ao%3D1%26asc%3D20240114230242%26meid%3D888e40ce424c4fcd835517f4ad39d818%26pid%3D101952%26rk%3D1%26rkt%3D1%26mehot%3Dnone%26itm%3D262857678191%26pmt%3D0%26noa%3D1%26pg%3D4375194%26algv%3DWatchlistVariantWithMLR&_trksid=p4375194.c101952.m162921&_trkparms=parentrq%3A1dab917e18f0a4f2f37b820cffff804a%7Cpageci%3A1177279c-0449-11ef-918d-4ab693c5306a%7Ciid%3A1%7Cvlpname%3Avlp_homepage

https://www.wheelerfleet.com/product/heater-valve/119353/0

I ordered the second one. Both are 5/8" hose fittings, PULL -TO-CLOSE.

I will report back once I get the valve about it's quality and suitability.

I realize this is an old subject, and much can be found by searching the forum, but I do think this info could be useful....

Safety Fast (and not leaking or overheating),
SHIMHEAD

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"We the willing, led by the unknowing, are doing the impossible for the ungrateful. We have done so much with so little for so long, that we are now qualified to do anything with nothing." source unknown....

And another one.....

https://www.amazon.com/46104-VUH-Heater-Cable-Control-Valve/dp/B0773W1W1R/ref=sr_1_2?crid=SIZCO2P4GLWO&dib=eyJ2IjoiMSJ9.4aPiG_AL1h0iR3TN6QpvWlon2pxN2UP-ECvgsupfjZ3b-wqNovLQ_swklRRIyQwuid-HcHB_MgDZv1ac6Jk90aLIvAOqemXwDuUjr5JBtnKun0MX021Ug5pjZLsU273-NLjh31zL9M1jODQ3DuPj03hnnsdVgeeRSpW7nt4b5eLKdQ7mIDosZd4EfvdGH14Ju0THclb3QPdgfGWy9krsurGQb3760JpYxIEdzyn_7kAF0o2a9vhwc1XG-_1IrRjvBAtWXpUHQWDEZURSLDAqiJFjzHFl5mLsRIgB0ToeVdA.SUjKdmmYb_5cAfJ6EvHxg6Vg9XekktrMtmDIh7X3YHA&dib_tag=se&keywords=5%2F8%22+pull+to+close+heater+valve&qid=1714190853&sprefix=5%2F8+pull+to+close+heater+valve%2Caps%2C81&sr=8-2

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"We the willing, led by the unknowing, are doing the impossible for the ungrateful. We have done so much with so little for so long, that we are now qualified to do anything with nothing." source unknown....

Those will not directly replace the one on your car.
What you need looks more like these.
I believe that some folks have been able to make an adapter.

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1978 MGB
When diagnosing issues related to running and stalling, always check to see if you have gas in the tank first.

David
I just looked at the Ebay link that you posted;

https://www.ebay.com/itm/262857678191?_trkparms=amclksrc%3DITM%26aid%3D777008%26algo%3DPERSONAL.TOPIC%26ao%3D1%26asc%3D20240114230242%26meid%3D888e40ce424c4fcd835517f4ad39d818%26pid%3D101952%26rk%3D1%26rkt%3D1%26mehot%3Dnone%26itm%3D262857678191%26pmt%3D0%26noa%3D1%26pg%3D4375194%26algv%3DWatchlistVariantWithMLR&_trksid=p4375194.c101952.m162921&_trkparms=parentrq%3A1dab917e18f0a4f2f37b820cffff804a%7Cpageci%3A1177279c-0449-11ef-918d-4ab693c5306a%7Ciid%3A1%7Cvlpname%3Avlp_homepage

Guess what the postage is to the UK? US $250.84 UPS Worldwide Express

David,
I'm curious...

Did she see 'over-temp' on the gauge or smell coolant vapor?

Or is a 'high temp' alarm installed?

Regardless... Your wife must be well attuned to monitoring the running condition of engines to be able to recognize the problem brewing.

She deserves a dinner out and flowers for likely saving that newly rebuilt head.

Drew... your friend around the corner in Summerville.

I also looked hard and long at the various valve options out there. I settled on one that looks like yours, as in an in-line design that I'll place in the hose after fasioning a 90 degree bend on the pedastal of the old valve coming off the block. I've yet to implement it in the real world.

https://www.amazon.com/gp/product/B003R31YVQ/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

In doing my heater valve conversion I found this hose that is 1/2" on one end and 5/8" on the other.

Gates part number is 18051. Application is

DODGE B150 1986-1994
DODGE B1500 1995-1996
DODGE B250 1986-1994
DODGE B2500 1995-1996
DODGE B350 1986-1994
DODGE B3500 1995-1996
JEEP CHEROKEE 1987-1990
JEEP COMANCHE 1987-1990
JEEP WAGONEER 1987-1990

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CAUTION!!

Information in my journal may not be suitable for those who are sensitive. View at your own risk.

Know the rules well so you can break them effectively. Dalai Lama

That is why I always say, who cares how the factory did it, they did so many things so wrong, they were never the example to follow. Hap Waldrop

Since I don't care about controlling it from the cockpit, this is what Matt G built for me after a disaster with a regular heater valve, with 2000 miles on it (blew head gasket)

I much like the security of it, and will turn it off in about a month when it warms up.

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So where do I purchase my ticket?
I would just like to have a ringside seat
I want to know about the new Mother Earth
I want to hear and see - everything
I want to hear and see - Everything (Jimi)
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We can all do better. - Jim Jeffries

Source for good OEM quality heater valves. https://www.ebay.co.uk/itm/256491066400?itmmeta=01HWG250RBJM2FAE13BF1NR56X&hash=item3bb80f1420:g:BowAAMXQgJRQ9ZR3

Oxymoron

My Moss-sourced heater valve only lasted six months.

I installed the Ashley-Hinton valve and so far it has outlasted the Moss valve by a factor of three.

Time will tell.

Tim

My heater valve was installed in 1976 and is still working. Any part can fail. These days, aftermarket parts do not have as good a reputation as OEM in any brand. The OEM valve on the MG does work, although if had been up to me, I would have placed the valve on the heater box, not the engine block.


GMc

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Wait for me at the gate Tuffy, because without you they're never gonna let me in.

SDCH WTCH-X Twin Oaks Tuff Nutt
2008 - 2022



Edited 1 time(s). Last edit at 2024-04-27 03:38 PM by Arizona Shorty.

This one works pretty good

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CAUTION!!

Information in my journal may not be suitable for those who are sensitive. View at your own risk.

Know the rules well so you can break them effectively. Dalai Lama

That is why I always say, who cares how the factory did it, they did so many things so wrong, they were never the example to follow. Hap Waldrop

Here's my solution using a 4 Seasons 74648.

Wow Greg, that's amazing for a 48 year old valve.

I think that your longevity speaks volumes regarding the quality of the old formulations used to make the soft goods for the valve and other parts.

My new Moss valve utilizing inferior rubber failed around six months, and I only used the heater a handful of times.

Hope you get another 48 years out of yours.

Tim