Unfortunately rusty sills on the saloon and 2+2 is a lot down to luck, how well
the fibreglassing went when these areas were being done at the factory.
On both cars the sill to A pillar area is very complicated to completely seal
against water coming in around the door hinge openings.
On the saloon the water is supposed to drain out via a hole in the bottom of
the A pillar but it must have been almost impossible to completely seal off the
end of the steel sill.
On the 2+2 the water is supposed to drain out via a hole in the bottom of the
door opening but that is about 2” above the top of the sill member and and
while it is a slightly easier area to seal it does sit there with the 2” of
water in it which will find any gap there is down past the sill, or quite
commonly, into the car.
On my saloon i used a large drill bit to drill directly up from the hole in the
bottom of the sill until i could pass a brass tube up into the bottom of the A
pillar area, this path is almost open, the drill just took out some small bits
of fibreglass.
It comes up the outer side of the sill tube.
Then I bonded the bottom of the brass tube into the sill with Polyurethane
adhesive and sealed around the top as best i could.
I then put in several very thick coats of rubber roofing compound all over the
bottom of the A pillar area to fill in any remaining small gaps.
So now there should be no way the water can get down into the sill.
On the 2+2 i pulled off the side of the A pillar “pocket area” (it’s a bonded
on fibreglass panel on the 2+2), filled the pocket area with expanding foam to
just below the level of the drain hole into the door pillar.
Cut the foam to shape with a kitchen knife.
Then covered that on the top and side with fibreglass matting.
Then rebonded the side panel with Polyurethane sealant.
On Matthews 2+2 i did it a different way, we had a big tin of left over
polyurethane resin at work, we jacked the car up at the back so there was slope
towards the drain hole in the door pillar.
Then just filled the pocket area up to the drain hole level with the resin.
Probably added a Kg or 2 in weight but that wasn’t a problem with Matthews car !
Just think yourself lucky you’ve not got a H4, i really don’t know who thought
fibreglassing the chassis though the body was a good idea.
Maybe if it was galvanised, it might have worked but not with painted steel.
Jim
From: Rick Finlan
Sent: Friday, July 30, 2021 3:50 PM
To: Quantum Owners Group
Subject: Re: [Quantum Owners] Saloon metal structure replacement
Thanks Jim, I had the same thought.
I haven't removed the sill yet as its raining , but I have noticed the
passenger side door has a larger gap at the top of the hoop than the drivers
side, its dropped about 3mm by my reckoning, car is probably already bending,
my thought is that the passenger sill has already rusted through and car is
stressing sill area , the sill doesn't ping when tapped like the drivers side
and the fiberglass can be pushed in by about 10 mm with a prod just forward of
B pillar as though nothing exists behind it.
I'm awaiting delivery of a cheap borescope to take a look inside sill box
section before cutting, it may also help find some of the water leaks .
Had the thought that if the sill removal affects structural integrity and car
bends or is bent, that a 2x3 box section steel chassis could be bolted in the
floor/sill and a frame built off it to support A and B pillar and seat belt
mount - all the gaps would let air round everything and I could see any issues
in future, could cover with a removable trim panel and inspect every year -
the box section may help pull car square if bolted along floor from the bottom !
Its just an idea , a replacement plate identical to original steel plate is
favourite, but probably not stainless as its more difficult to work with and
may still rust when deprived of oxygen , zinc plating is good but that may not
bond to the fiberglass either, I have no experience of that other than
horrible white powder all over a zinc plated Ginetta G26 chassis.
I wasn't expecting all this, car was a runner not long ago and was to be a
simple lockdown project - but having spent a few weeks with it, the cars is
really rough and needs respraying, windows out re-bonding, all suspension and
mechanicals going over and retrimming as well, wish I had spent more on a
better one, but they dont come up that often.
I have also noticed micro gel coat cracks in the near side spring turret, like
its been flexing, a previous owner had painted engine bay all black matt paint
that was hiding them, it was flacking off so when cleaning off paint the cracks
became apparent round the base of the turret and towards wing - any ideas about
strengthening the turrets?
Rick
On Friday, July 30, 2021 at 11:44:33 AM UTC+1 Jim Hearne wrote:
I imagine it would be a good idea to take the sill members out with no engine
in the car, or at least make sure it’s supported at both ends under the floor
and under the engine so there is no weight from the engine pulling the front
down.
Otherwise you might end up with a Banana.
Jim
From: Andy Heaton
Sent: Friday, July 30, 2021 11:40 AM
To: quantu...@googlegroups.com
Subject: Re: [Quantum Owners] Saloon metal structure replacement
Eddie, Paul and I are putting the new sills into Paul's Q next weekend.
If you are at the classic by all means come and have a chat with me.
My no is 07970961044.
There are a set sequence of procedures we have done.
On Thu, 29 Jul 2021, 17:11 Rick Finlan, <rickf...@gmail.com> wrote:
Thanks for the information, I will seek those guys out at Stoneleigh.
In the mean time I have taken some fibreglass off the bottom of the A
pillar metal plate to see whats up, look at that corrosion.
will keep you posted with progress..
On Thursday, July 29, 2021 at 3:39:09 PM UTC+1 Steve Kodz wrote:
Rick,
I know Andy Heaton, his son Paul and Eddie Ruskin have removed the metal
sill from Paul's Saloon. Not sure if it has gone back in yet. I would expect
Andy or Eddie will be on here soon with more information, but expect one of
them at Stoneleigh.
Regards,
Stwve
On 29 July 2021 14:06:11 Rick Finlan <rickf...@gmail.com> wrote:
Hi, has anyone cut out the metal work in the sill and A pillar on a
saloon. I want to keep Q for next 20 - 30 years if I can, but its already badly
rusted in A pillar and has hollow sound on passenger sill where metal has
dissolved : - So about to get handy with an angle grinder and remove what I
think is the fibreglass holding in the inner sill and A pillar to see the
extent of corrosion. I feel confident I can do it , or get help doing it - but
would firstly like to know if anyone has advice about this major surgery and
what metalwork would need prefabricating to return the structural integrity,
any pitfalls?
I noticed a link for the proboards forum , but alas my 3 applications
are all still pending approval. I can attend Stoneleigh to discuss - but
unfortunately not in Q until its structurally right again.. Rick
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