It is an issue on the 2+2 as well as the saloon as they have a very similar joint between the fibreglass and the body around the bottom of the A pillar.
This area is very tricky to access.

On the saloon they tried to leave a passage down between the sill and the body with a drain hole at the bottom. On the 2+2 the drain hole went out into the door shut so in theory the water doesn't go near the sill

The issue on the 2+2 is the drain hole is quite a distance above the level of the bottom of the "pocket" that fills with water via the door hinge holes. So if the fibreglassing between the sill and the body has any leaks at all the water gets down around the sill tube.

On my 2+2 and Matthews i filled the pocket area up to the level of the drain hole, on mine with foam and fibreglass over the top, on Matthews with polyurethane resin left over from work.

On my saloon i drilled up the existing drain passage with a large drill to create a round hole, then i bonded a brass tube of a suitable height into the drain hole. The top end of the tube was sealed around with plasticine and then several coats of rubber compound. So the water can only go down the tube.

Jim


-----Original Message----- From: mgaskin via Quantum Owners Group
Sent: Friday, March 26, 2021 3:34 PM
To: [email protected]
Subject: RE: [Quantum Owners] Saloon Ventilation


Finally, check that no water has entered the sills. Poor fibreglass lay-up by QSC at the front of the sill in front of the 'A' pillar led to me having to replace the metal sill - it had rotted away to nothing near the seat belt attachment!
(https://quantumforum.proboards.com/thread/522/quantum-saloon-full-rebuild?page=2)

This sounds like a possible (and alarming) explanation for the brown patch under the gelcoat on my 2+2 below the door hinges in the sill. I've asked for a logon for the proboards to look at your link.

Matthew


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liability, loss, or damage caused or alleged to be caused directly or indirectly by the 
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