Wales
by Joske Vermeule, September 1
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Forums39
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Jun 14th, 2026
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Joined: Aug 2013
Posts: 15,794 Likes: 15
Formerly known as Aldermog Member of the Inner Circle
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Formerly known as Aldermog Member of the Inner Circle
Joined: Aug 2013
Posts: 15,794 Likes: 15 |
I think that the key objective is to keep moisture out from below. Ironically its impossible to keep it out from above!, but at least it ventilates easier.
Although I'm not a big fan of the appearance of the Dinitrol 4941 which the factory now use, there's no doubting its ability to repel moisture. So whatever you chose, make sure that where the floorboards meet the chassis, the water can't get in. Dave, does the factory apply this black stuff, or is is left to a sub-contractor? Last time I was looking round it seemed that the cars in pdi didn't have any coating. Jays knows, perhaps!
Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...
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Joined: Sep 2009
Posts: 7,435 Likes: 122
Talk Morgan Guru
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Talk Morgan Guru
Joined: Sep 2009
Posts: 7,435 Likes: 122 |
I'm wondering if I'm too lazy about this topic. Over the last years I thought the wood of newer Morgans does not need any further maintenance. So would you recommend to repeat the protection of the wood? I thought, the ash has been dived in cuprinol and would last forever...
'14 4/4 graphite grey
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Joined: Feb 2011
Posts: 14,009
Member of the Inner Circle
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Member of the Inner Circle
Joined: Feb 2011
Posts: 14,009 |
I think that the key objective is to keep moisture out from below. Ironically its impossible to keep it out from above!, but at least it ventilates easier.
Although I'm not a big fan of the appearance of the Dinitrol 4941 which the factory now use, there's no doubting its ability to repel moisture. So whatever you chose, make sure that where the floorboards meet the chassis, the water can't get in. Dave, does the factory apply this black stuff, or is is left to a sub-contractor? Last time I was looking round it seemed that the cars in pdi didn't have any coating. Jays knows, perhaps! The cars go up into Malvern to a one man company who do the undersealing.......we don't want that messy job in the factory!
Jays
Former Morgan owner. Gone but hopefully not forgotten!
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Joined: Feb 2011
Posts: 14,009
Member of the Inner Circle
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Member of the Inner Circle
Joined: Feb 2011
Posts: 14,009 |
I'm wondering if I'm too lazy about this topic. Over the last years I thought the wood of newer Morgans does not need any further maintenance. So would you recommend to repeat the protection of the wood? I thought, the ash has been dived in cuprinol and would last forever... The ash frame has been dipped in a tank of Cuprinol as you say. The floors are also treated.
Jays
Former Morgan owner. Gone but hopefully not forgotten!
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Joined: Apr 2008
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Scruffy Oik Member of the Inner Circle
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Scruffy Oik Member of the Inner Circle
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I don't think the effects of Cuprinol would last forever, but if air can get to the treated wood to dry it out after getting wet, it should be fine.
The major place to watch out for is the area under the door frames. water that gets in here is held in by the sill padding, and can't easily get away. In the old days MMC used to use horsehair padding, which did a great job of promoting rot in the wood.
So long as your car has a chance to dry out properly after getting wet, either in a nice airy car port or a dehumidified garage where damp can't build up, I would think the wood would never suffer from the dreaded rot. The key is air circulation. Anything that seals or holds damp into the wood is bad, anything that gets air circulating past it is good.
Tim H.
1986 4/4 VVTi Sport, 2002 LR Defender, 2022 Mini Cooper SE
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Joined: Feb 2013
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Learner Plates Off!
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Learner Plates Off!
Joined: Feb 2013
Posts: 287 Likes: 8 |
The question I have is does the application of Cuprinol to the framework after it has been clad, have a detrimental effect on the aluminium and the steel fastenings? With regard to any chemical reactions
Owen
"bilibib"
1982 4/4 Twin Cam, Royal Ivory
1932 Super Sports, Duo tone(two tone)Green
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Joined: Aug 2013
Posts: 15,794 Likes: 15
Formerly known as Aldermog Member of the Inner Circle
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Formerly known as Aldermog Member of the Inner Circle
Joined: Aug 2013
Posts: 15,794 Likes: 15 |
From reading the Cuprinol data sheets - note that Cuprinol is not a single product but a generic title covering a range of products - it seems that it is not corrosive to metal. But nowhere is this clearly stated.
Peter,
66, 2016 Porsche Boxster S
No longer driving Tarka, the 2014 Plus 8...
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Joined: Jul 2007
Posts: 27,813 Likes: 749
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 27,813 Likes: 749 |
I use waxoyl & the wood has always been OK.
Inside I coat the floor boards & accessable plywood with teak oil
JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"
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Salty Sea Dog Member of the Inner Circle
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Salty Sea Dog Member of the Inner Circle
Joined: Jul 2007
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Yes. The version Morgan used was Cuprisol. May still be the case...
Graham (G4FUJ)
Sold L44FOR 4/4 Giallo Fly
'11 MINI Countryman Cooper D All4
'90 LR 90 SW
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