Talk Morgan Forums Morgan Sports Cars Morgan Plus Four, Supersport & Plus Six (CX & CXV Generation Vehicles) Radiators

Hi John, we let our 2016 3.7 Roadster go to move to a 2020 Plus 6. I very much liked most of the Roadsters character and did a lot of work over a year to sort its niggle areas. However, the Plus 6 wins hands down on handling and suspension. I am tall and broad which was always borderline on the Roadster, however, the Plus 6 has more driver and passenger room and feels good. My wife is a good foot shorted than I am and the Plus 6 has enough adjustment to allow her to drive it, she could not do this on the Roadster. Since we started using the Plus 6 a lot of warranty related areas have been addressed by Morgan and the dealer, to be fair although it has taken a lot of time to do the repairs they have always fixed the issues. I do not have an issue with the Plus 6 power level and the fact it has no traction control and an open diff, mostly its down to using the right foot at the right time, prior to Morgans we had AMG, the last being a C63, which had a lot more power and was also rear drive only..
The Plus 6 has a lot of character, maybe not as much as the older Roadster, but the smiles per mile is still very high.. I am keeping everything crossed that all the work undertaken by Morgan and their dealer sorts the car out. The radiator replacement is ongoing, I hope this addresses this issue, this is the only problem that bothers me at the moment. Also ref the brakes.. since the master cylinder changeout the brakes feel a lot better than previously.. How much this is due to the change of master cylinder and /or dealer set up i do not know, but the feeling is not as wooden as it was.

Are BMW having similar rad problems? The Morgan rad....is it the same as a BMW ? I doubt it due to fit in the car. It is likely to have a similar cooling capacity spec (same engine) with, perhaps, modifications to deal with different airflow.
Where exactly are the leaks? The core, the tanks, the pipes, the hose fitting? How much vibration damping is there? What pressure is the system working at?
I would guess MMC have/are looking at these factors.
If the leaks are at the hose mounts then how many beads are on the rad pipes and is a sealant used?
Are the rads pressure tested at manufacture? In the factory I worked in every rad went through a test process for leaks. Mainstream BL , small manufacturers ( (JCB, London taxi, Caterham, special MOD vehicles and many more).
These CX problems look like a recurrence of the early M3W problems.
Who is troubleshooting the problems? What is the relationship to suppliers for quality?

The radiator and chargecooler are bespoke aluminium fabrications to Morgan and different between the Plus 4 and SIx
The leaks i am aware of are at the welded junctions were the inlet/outlets join the radiator tank

I have my own views on how the radiator is mounted and the cause of the failures- I believe the factory are on iteration 7 of the mounting...

I don't believe it is thermal shock and i fear the latest swirl pot addition will not fix the problem

The radiators are all pressure tested at manufacture- although one failure I know of within 80 miles led to comments about Stevie Wonder doing the inspections...

Wouldn't it be great to have all those answers sospan although very much doubt it will happen, from MMC at least.

Simon of SiFab did predict it was a mount problem which the latest swirl pot addition wouldn't fix. Too much of the upper part of rad unsupported I believe. He was working on a fix himself I understood.

ETA Simon and I cross posted.

Thanks Dave, very reassuring to hear, the wife is a good foot shorter than me, so range of seat movement has always been an issue in what ever car we share........usually electric memory seats prove a boon as her driving position is weird and very high, and frustrating to get the seat back to how I like it!

I am watching very closely what happens next hopefully for everyone this is a permanent fix and the problem goes away and is consigned to the history books. I will have to try a Plus 6, haven't driven something really special that needs your constant attention since my Porsche 930 turbo. Mind you I was nearly 20 years younger and had the better reflexes than now. Nothing quite like trouser changing fun!

4 times

I’ve been a lucky boy with my Plus 6. 19 plate, honestly never had a rad problem. They did change everything this summer as a matter of course, done 2500 miles in last 8 weeks and no problems. Now reading 18,000 miles approx. Maybe they don’t like being stood and need to be hammered.

Interestingly, my previous car, 11 plate Porsche Panamera , 5 recalls, aircon , electrics, brakes, power steering and wind screen.

Discovery commercial, 3 recalls, can’t remember what for but only 3 years old.

This week, BMW 330 Electronic gas recirculation valve, another recall happened this spring but can’t remember what for. It’s a 67 plate and it’s had 4 recalls.

Basically, it seems that all these modern motors have on going problems. Porsche was pretty bad I remember, they had my car for three weeks waiting for parts in 2017. The year I sold it.

[img]https://imgur.com/a/YOSc0lx[/img]
Hi If this image does not come up then I need REAL HELP! Somebody sort this out for me!

This is our2019 P6 radiator and as you can see it has failed where the tube goes into the top tank.
Kerry

Here ya go

I use Imgur as well Kerry but you need the IMAGE url ending usually in .jpeg or . jpg to be inserted within the img tags, as you do with any other picture hosting site. Pressing or clicking on the required image in Imgur app will give you the option to "Copy URL", top left in options. This can then be pasted into your post between the tags.

Suggest always pressing "Preview Reply" on TM to ensure the result is as expected before pressing "Post Reply".