Click here to return to the home page.
Image of a road.
Who's Online Now
3 registered members (C2RM, brownbaker, Image), 387 guests, and 25 spiders.
Key: Admin, Global Mod, Mod
Top Posters(30 Days)
+8Rich 308
John V6 204
OZ 4/4 168
CooperMan 164
RichardV6 141
Newest Members
Alford, Mogge77, Kevin McMillen, Corrosion Guy, Supernano
8072 Registered Users
Newest Topics
Upper intake manifold gasket
by Leroy. 15/08/22 04:16 PM
Removing scuffs to the rear perspex window
by Quicksilver. 15/08/22 01:36 PM
Handbrake cable moving
by NelsonG. 15/08/22 01:00 PM
Bevel box grease ?
by nippymog. 15/08/22 12:55 PM
Plus 4 Rover M16 ECU
by Beltiebeef. 15/08/22 11:04 AM
Seat Webbing split on drivers seat
by jeepy. 15/08/22 09:18 AM
Sospan a warning
by +8Rich. 14/08/22 05:08 PM
Latest Photos
4/4 75th Anniversary
Around the Cairngorms
Big Skies
More from Helmingham
Helmingham Hall Car Show 7.8.22
Forum Statistics
Forums34
Topics43,869
Posts738,857
Members8,072
Most Online1,033
Dec 28th, 2019
Today's Birthdays
Richard - Aus
Previous Thread
Next Thread
Print Thread
Page 2 of 4 1 2 3 4
Re: Radiator fix [Re: John V6] #739574
20/04/22 04:17 PM
20/04/22 04:17 PM
Joined: Feb 2010
Posts: 1,368
SimonH Offline
Has a lot to Say!
SimonH  Offline
Has a lot to Say!

Joined: Feb 2010
Posts: 1,368
The revised radiator mounting, along with the lower pressure cap, and reduced coolant level has not prevented any further radiator failures

I’ve been contacted by a dealer , who having fitted a third replacement radiator on a Plus Six in year, had the third radiator last less than 80 miles….

I’ll be working on a solution soon….


Simon @ Sifab.co.uk

Sifabtemporary@gmail.com
Re: Radiator fix [Re: John V6] #740484
29/04/22 06:27 PM
29/04/22 06:27 PM
Joined: Nov 2017
Posts: 5
P
Pamo Offline
New to Talk Morgan
Pamo  Offline
New to Talk Morgan
P

Joined: Nov 2017
Posts: 5
I changed my leaky radiator
With replacement, new cap and 50% full fluid
I have done 2500 kms since, without problem ... for the moment ...


Fun is not a straight line ...
Re: Radiator fix [Re: SimonH] #740538
30/04/22 11:00 AM
30/04/22 11:00 AM
Joined: Feb 2016
Posts: 5,096
East Harling, Norfolk UK
RichardV6 Offline
Charter Member
RichardV6  Offline
Charter Member

Joined: Feb 2016
Posts: 5,096
East Harling, Norfolk UK
Originally Posted by SimonH
The revised radiator mounting, along with the lower pressure cap, and reduced coolant level has not prevented any further radiator failures

I’ve been contacted by a dealer , who having fitted a third replacement radiator on a Plus Six in year, had the third radiator last less than 80 miles….

I’ll be working on a solution soon….

Not a minute too soon by the sound of it Simon. You will have a strong market for such I'm sure.

FWIW it's taken me a couple of months and a 1000 miles to completely cure minor hose leaks on my Roadster which despite nipping up hose clips when hot, kept re-appearing and in differing locations including T piece, top and bottom hose. Finally cured by extra hose clips on the lower two of bottom hose connections and ensuring coolant filled to no higher than mid mark on header tank.


Richard

2018 Roadster - Red/Magnolia - "Morton"
1966 Land Rover series 2a SWB
1945 Moto Guzzi Airone
Re: Radiator fix [Re: John V6] #740539
30/04/22 11:09 AM
30/04/22 11:09 AM
Joined: Jul 2007
Posts: 22,621
Suffolk
John V6 Offline OP
Brooklands Register contact
John V6  Offline OP
Brooklands Register contact
Member of the Inner Circle

Joined: Jul 2007
Posts: 22,621
Suffolk
Lets hope so Richard I know Hawki's new to him plus four has had 4 rads in 18 months.


JohnV6
2014 Brooklands Edition Roadster "Brookland's Belle" #5 of 50
Re: Radiator fix [Re: John V6] #742868
26/05/22 07:34 AM
26/05/22 07:34 AM
Joined: May 2021
Posts: 5
Gonze Offline
New to Talk Morgan
Gonze  Offline
New to Talk Morgan

Joined: May 2021
Posts: 5
I had a major leak on my radiator which was very efficiently replaced by Adam at MelvynRutter (under warranty) - this seems to have fixed the leaking.

To answer John V6’s question about the engine coolant cap being changed - attached are some photos - the original cap has a red “Stant” printed on it, the new cap has no such printed text. When the cap is replaced the header tank is drained and refilled with 500ml of coolant (and a sticker applied to the side of the tank).

No idea if these two things will permanently fix the radiator blowing again, but I hope they will!

Old cap as installed (note there is a second similar tank and cap, just visible under hood - that is the aircon coolant):
[Linked Image]

New cap:
[Linked Image]
[Linked Image]

New cap and sticker installed:
[Linked Image]

Re: Radiator fix [Re: John V6] #742870
26/05/22 08:10 AM
26/05/22 08:10 AM
Joined: Dec 2011
Posts: 412
tervuren belgium
T
thierry242 Offline
Learner Plates Off!
thierry242  Offline
Learner Plates Off!
T

Joined: Dec 2011
Posts: 412
tervuren belgium
Strangely , after i had again a leak with le third radiator and the new cap , no drops on the garage floor even i have made two times 350 km .

Re: Radiator fix [Re: Gonze] #742877
26/05/22 08:53 AM
26/05/22 08:53 AM
Joined: Feb 2010
Posts: 1,368
SimonH Offline
Has a lot to Say!
SimonH  Offline
Has a lot to Say!

Joined: Feb 2010
Posts: 1,368
Originally Posted by Gonze
I had a major leak on my radiator which was very efficiently replaced by Adam at MelvynRutter (under warranty) - this seems to have fixed the leaking.

To answer John V6’s question about the engine coolant cap being changed - attached are some photos - the original cap has a red “Stant” printed on it, the new cap has no such printed text. When the cap is replaced the header tank is drained and refilled with 500ml of coolant (and a sticker applied to the side of the tank).

No idea if these two things will permanently fix the radiator blowing again, but I hope they will!

Old cap as installed (note there is a second similar tank and cap, just visible under hood - that is the aircon coolant):
[Linked Image]

New cap:
[Linked Image]
[Linked Image]

New cap and sticker installed:
[Linked Image]


The second tank is for the chargecooler not aircon


Simon @ Sifab.co.uk

Sifabtemporary@gmail.com
Re: Radiator fix [Re: John V6] #742878
26/05/22 08:59 AM
26/05/22 08:59 AM
Joined: Jun 2021
Posts: 790
New Forest
Lordofthewings Offline
Talk Morgan Regular
Lordofthewings  Offline
Talk Morgan Regular

Joined: Jun 2021
Posts: 790
New Forest
I'm intrigued by this discussion (although I don't have a problem with my Roadster radiator as far as I know), because I have previously owned TVRs which featured a "swirl tank" (or "swirl pot"). This article explains: https://www.merlinmotorsport.co.uk/...system-header-tanks-in-your-race-car-323
I recall there was some discussion among TVR owners as to which of the caps should be "pressure relief" type, and which simply plain. In my last TVR, an S3, also with a Ford V6 (2.9) engine, I had a swirl pot with a pressure-cap above the thermostat. The overflow just had a cap, as the level never reached more than about half. This is probably all basic stuff for somebody who knows more than me about Morgan cooling systems, and will probably be able to explain which of our cars if any have swirl pots.
[Linked Image]


Peter
2009 3-litre Roadster "Ivor", royal ivory / green
Re: Radiator fix [Re: CooperMan] #742884
26/05/22 09:34 AM
26/05/22 09:34 AM
Joined: Feb 2016
Posts: 5,096
East Harling, Norfolk UK
RichardV6 Offline
Charter Member
RichardV6  Offline
Charter Member

Joined: Feb 2016
Posts: 5,096
East Harling, Norfolk UK
Originally Posted by CooperMan
Originally Posted by +8Rich
Yes Jon, that's what these boys said as per dealers advise..

So, as I see it a WET system that becomes hydraulically locked by it's OE design...and blows things apart... doh

I don't see it as a hydraulic lock situation Jon. The coolant vapour pressure above the level in the header tank reflects back through the incompressible coolant to pressurise the radiator. Increasing this vapour volume with lower coolant level and futher controling it's pressure with release cap was supposedly the radiator fix. I understand CX rads have still failed after this though thinking


Richard

2018 Roadster - Red/Magnolia - "Morton"
1966 Land Rover series 2a SWB
1945 Moto Guzzi Airone
Re: Radiator fix [Re: John V6] #742908
26/05/22 03:04 PM
26/05/22 03:04 PM
Joined: Feb 2009
Posts: 103
France, Dunkerque
G
gaston Offline
L - Learner Plates On
gaston  Offline
L - Learner Plates On
G

Joined: Feb 2009
Posts: 103
France, Dunkerque

I wonder if it is not a quality problem of the radiators. Mine at 12,000 km.

We changed the cap and checked the level at 8000 KM. We drove around Spain with a temperature of 35°C and not a drop under the car.

Uneven manufacturing quality may be the explanation.

Page 2 of 4 1 2 3 4

Moderated by  TalkMorgan 

Powered by UBB.threads™ PHP Forum Software 7.7.1