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Roadster Radiator leak #655250
10/08/20 10:07 AM
10/08/20 10:07 AM
Joined: Mar 2015
Posts: 91
Billingham
M
mal Offline OP
Just Getting Started
mal  Offline OP
Just Getting Started
M

Joined: Mar 2015
Posts: 91
Billingham
Came home on Friday after a drive out, and parked up, but later notice a pool of water under the car, couldn't see any thing, so put it away and next morning, again pool of coolant under the car, so yesterday put the car on the lift and removed the cowl and then could see where it was leaking from (drain plug area) so strip the front end of and removed the radiator.
This morning took it in to a local radiator repair stop, and they comfirmed the leak from the drain plug area, needs resoldering, and told me to leave and pick it up later today

Last edited by mal; 10/08/20 10:22 AM.

Mal

3.0 Roadster 2007
Re: Roadster Radiator leak [Re: mal] #655256
10/08/20 10:41 AM
10/08/20 10:41 AM
Joined: May 2010
Posts: 7,228
Llanelli
sospan Offline
Talk Morgan Guru
sospan  Offline
Talk Morgan Guru

Joined: May 2010
Posts: 7,228
Llanelli
I take it the rad is copper/brass. Brass tanks with copper gills in the core. When made new the pipes, drain plug, sensor bosses would have been soldered with high temperature solder. The tanks are then soldered onto the core with normal solder. Much better than the plastic tanks crimped onto the core.
I worked in a rad factory and we made rads for BL mainly but aftermarket ones for anything and everything. Triumph Acclaim was the first plastic tank version we did. Left there in 1984 and the factory is still going.


Red Plus8
Re: Roadster Radiator leak [Re: mal] #655269
10/08/20 11:32 AM
10/08/20 11:32 AM
Joined: Nov 2015
Posts: 2,702
Yorkshire
CooperMan Offline
Talk Morgan Expert
CooperMan  Offline
Talk Morgan Expert

Joined: Nov 2015
Posts: 2,702
Yorkshire
Mal, I had exactly the same on my previous '04 Roadster, the bonus is these are proper brass & copper construction as per Sospan's description & repair well

I'm pretty sure my OE drain plug boss as only soft lead soldered & there was a pinhole in this joint

One thing to note is not to use modern OAT longlife anti-freeze (contains organic acids) as these are known to attack some mixed metal rads containing soft lead solder


Jon M
Re: Roadster Radiator leak [Re: mal] #655278
10/08/20 12:30 PM
10/08/20 12:30 PM
Joined: Mar 2015
Posts: 91
Billingham
M
mal Offline OP
Just Getting Started
mal  Offline OP
Just Getting Started
M

Joined: Mar 2015
Posts: 91
Billingham
Yes brass with copper core, leaking on drain plug.

Thanks for the advice re Anti-freeze

Which Anti-freeze do you recommend

Last edited by mal; 10/08/20 12:33 PM.

Mal

3.0 Roadster 2007
Re: Roadster Radiator leak [Re: mal] #655330
10/08/20 04:23 PM
10/08/20 04:23 PM
Joined: Aug 2017
Posts: 248
Bergen, Norway
R
Robbie Mathisen Offline
L - Learner Plates On
Robbie Mathisen  Offline
L - Learner Plates On
R

Joined: Aug 2017
Posts: 248
Bergen, Norway
Just to complicate things: OAT antifreeze is what is recommended for a modern engine mainly made of aluminium - just as the Roadster. As far as I know the Roadster 3l enginge comes from the Ford Mondeo, and if you look that up on the net, OAT is recommended for that specific engine. I do not think matters change when you put it into a Morgan. So what to do? I worried more about the engine block than the rad, so I put in OAT, but of course I do not know what harmful effects could have occured with non-OAT. Comments?
By the way, I had exactly the same problem on my Roadster. Easy fix. Got the rad out, brushed the black paint away around the drain plug to expose brass. It is soft lead soldered, so it took me ten minutes with (a large!) soldering iron and some lead. Has not leaked since. The biggest job was to get the rad in and out. Or more correctly, down and up, as I took it out from below...


Robbie the Norseman
2004 V6 Roadster
Sherwood green
Re: Roadster Radiator leak [Re: mal] #655334
10/08/20 04:40 PM
10/08/20 04:40 PM
Joined: Nov 2015
Posts: 2,702
Yorkshire
CooperMan Offline
Talk Morgan Expert
CooperMan  Offline
Talk Morgan Expert

Joined: Nov 2015
Posts: 2,702
Yorkshire
Originally Posted by mal
Yes brass with copper core, leaking on drain plug.

Thanks for the advice re Anti-freeze

Which Anti-freeze do you recommend


I've used Comma, Super Coldmaster and Car Plan, Blue Star

Both are spec'd to BS6580 and are based on basic ethylene glycol which is safe on alloys, but especially brass / copper / multi metal systems


Jon M
Re: Roadster Radiator leak [Re: mal] #655338
10/08/20 04:51 PM
10/08/20 04:51 PM
Joined: Dec 2008
Posts: 18,735
South Yorkshire
DaveW Offline
Roadster Guru
DaveW  Offline
Roadster Guru
Member of the Inner Circle

Joined: Dec 2008
Posts: 18,735
South Yorkshire
I use the Ford top of the range anti freeze, which is a purple blue colour.

At some stage I'll probably get an aluminium radiator for my Roadster.


DaveW
2005 Corsa Red Roadster S1
2016 Saffron Yellow (Narrow) AR Plus 4
Re: Roadster Radiator leak [Re: mal] #655371
10/08/20 07:16 PM
10/08/20 07:16 PM
Joined: Mar 2015
Posts: 91
Billingham
M
mal Offline OP
Just Getting Started
mal  Offline OP
Just Getting Started
M

Joined: Mar 2015
Posts: 91
Billingham
Many thanks for recommendations and advice 👍👍👍


Mal

3.0 Roadster 2007
Re: Roadster Radiator leak [Re: mal] #655425
11/08/20 10:25 AM
11/08/20 10:25 AM
Joined: Dec 2008
Posts: 18,735
South Yorkshire
DaveW Offline
Roadster Guru
DaveW  Offline
Roadster Guru
Member of the Inner Circle

Joined: Dec 2008
Posts: 18,735
South Yorkshire
To add some detail Mal..............

Ford Super Plus Premium Antifreeze. This is what my Roadster came with, and is a translucent blue/violet colour.

Contains Ethanediol

ethanediol (ˈiːθeɪnˌdaɪɒl; ˈɛθ-)
n
(Elements & Compounds) a clear colourless syrupy soluble liquid substance, used as an antifreeze and solvent. Formula: CH2OHCH2OH. Also called: glycol or ethylene glycol

I wrote a guide to antifreeze a while ago in Miscellany, it might even be on TM. I'll see if I can find it. Basically colour means nothing, there are versions of traditional and OAT coolants in most colours, so always read the spec sheet.


DaveW
2005 Corsa Red Roadster S1
2016 Saffron Yellow (Narrow) AR Plus 4
Re: Roadster Radiator leak [Re: mal] #655823
12/08/20 08:38 PM
12/08/20 08:38 PM
Joined: Mar 2015
Posts: 91
Billingham
M
mal Offline OP
Just Getting Started
mal  Offline OP
Just Getting Started
M

Joined: Mar 2015
Posts: 91
Billingham
Morgan back up and running, thanks for all the advice,
went with the ford super plus antifreeze.


Mal

3.0 Roadster 2007

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