Convertible vs. coupe rigidity
#21
Le Mans Master
Are you suggesting retro fitting that to a C2? I'm not sure I'd want those two pieces attached to fiberglass trying to hold my door position constant when the frame flexes. How would that work?
For example, I always open the doors before jacking up any one corner. And yes, my frame is solid.
For example, I always open the doors before jacking up any one corner. And yes, my frame is solid.
When I bought my '63 convertible in 1969, the first time I exited an entrance to the street at a local auto parts store with the top down, I looked over my shoulder and was awe struck by just how much the top of the door moved away from the rear quarter panel. On my '73 convertible, needless to say there is very little movement between the top of the door and the quarter panel.
GUSTO
#22
Safety Car
We're driving cars that are over 50 years old and we're concerned about rattles? I'm just happy that mine starts every day it runs straight down the road.
Richard Newton
1958 Interior Project
Richard Newton
1958 Interior Project
#23
Turn 12!
#24
Race Director
Not at all, however if it were done in the same manner as it is on the 70-75 convertible it would help and be pretty sound. The Door Alignment Receiver is actually bolted to the top of the rear upright of the birdcage. The Door Guide is bolted to the steel door shell of the door. I don't think it will cure the problem, but I know it does make a difference.
When I bought my '63 convertible in 1969, the first time I exited an entrance to the street at a local auto parts store with the top down, I looked over my shoulder and was awe struck by just how much the top of the door moved away from the rear quarter panel. On my '73 convertible, needless to say there is very little movement between the top of the door and the quarter panel.
GUSTO
When I bought my '63 convertible in 1969, the first time I exited an entrance to the street at a local auto parts store with the top down, I looked over my shoulder and was awe struck by just how much the top of the door moved away from the rear quarter panel. On my '73 convertible, needless to say there is very little movement between the top of the door and the quarter panel.
GUSTO
It doesnt seem like the kind of thing to attempt on a trial and error basis!
#25
Team Owner
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Besides the extra length and weight of a C3 door, those cars also have a different design door latch than a C2.
Maybe that's why the extra hardware is required?
My 63 convertible doors may move a little but they don't rattle or make any noise even with original rubbers.
Maybe that's why the extra hardware is required?
My 63 convertible doors may move a little but they don't rattle or make any noise even with original rubbers.
#26
Melting Slicks
I notice the same gap movement when I cross train tracks etc. I expected a lessening of this when I changed to my all welded frame. The frame perimeter stitch welds were all completed and the frame was then powder-coated. No change.
I have persevered to make my car pretty much rattle free. A friend [mid year owner] noticed the silence recently. Strangely my toughest rattle to find was my soft top foreword latches when the top is down. I blamed all aspects of my soft top till I figured it out. I have 2 sets of latches with the springs, just to try a different set. I now wrap them with something when top down which is pretty much always. On real rough road section [which I obviously try to avoid] my glove box door may rattle.
I have persevered to make my car pretty much rattle free. A friend [mid year owner] noticed the silence recently. Strangely my toughest rattle to find was my soft top foreword latches when the top is down. I blamed all aspects of my soft top till I figured it out. I have 2 sets of latches with the springs, just to try a different set. I now wrap them with something when top down which is pretty much always. On real rough road section [which I obviously try to avoid] my glove box door may rattle.
Last edited by 00fxd; 08-29-2015 at 11:45 AM.
#27
One partial convertible body looseness cure is to install a factory C2 hardtop. The doors are brought under control because the windshield frame and the rear clip are tied together.
BTW, when the '63s came out, almost all racers went with the SWC. Until aircraft engineer and longtime C1 racer Dick Guldstrand realized the convertible had a lower center of gravity than the coupe. He proceeded to run away with a few years' worth of SCCA Western Region class titles.
Coupes are the choice for long-distance events, especially in rainy regions like Le Mans.
BTW, when the '63s came out, almost all racers went with the SWC. Until aircraft engineer and longtime C1 racer Dick Guldstrand realized the convertible had a lower center of gravity than the coupe. He proceeded to run away with a few years' worth of SCCA Western Region class titles.
Coupes are the choice for long-distance events, especially in rainy regions like Le Mans.
#28
Race Director
Yup, I have the hard top for my 67, but that kinda defeats the purpose of having a convertible here in California...... It hasnt been on the car in about -5 years!
#29
Drifting
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The C5 97-04 was built as a convertible
Dave
#30
Safety Car
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Cruise-In III Veteran
Yup, cowl shake is the norm with my vert. Like sub006 says, installing the hardtop DOES tighten that up. Mine goes on every late fall...does also give her a more classy, formal roof line (without the "rib" )
Jim
In God We Trust!
Jim
In God We Trust!
#31
Safety Car
the convertible is a rattletrap, the doors move a lot, the car shakes and flexes and rattles over rough road
I agree about hearing lots of sounds (both good and bad) with the convertible. I don't even listen to the radio anymore as I'd rather "hear" was is going on in my Vert.
I can tell when the side view mirror is not positioned correctly, as it whistles if it has been bumped too far out!
#32
Team Owner
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If your convertible is a rattletrap, shakes, flexes, etc., maybe you have one that has been pieced together from three of them including the rusty frame from one?
No doubt the convertible is a looser unit. That doesn't mean it's a rattletrap if the car is in good condition.
No doubt the convertible is a looser unit. That doesn't mean it's a rattletrap if the car is in good condition.
#33
Melting Slicks
Convertible Body Hinging
Seems like the convertible bodies want to flex like a big hinge right at the luggage stop bulkhead. Have seen many with significant stress cracking in this area.
So to you guys doing a convertible body off -- give this location a thorough look.
And set the door-to-lock pillar gap is tad wider than you might on a coupe. Might save you some paint chips if you get airborne and come down hard.
You don't even have to guess how I know this....
So to you guys doing a convertible body off -- give this location a thorough look.
And set the door-to-lock pillar gap is tad wider than you might on a coupe. Might save you some paint chips if you get airborne and come down hard.
You don't even have to guess how I know this....
#34
Team Owner
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And don't forget the tapered wedges at the top of the rear face of the door inner panel and at the top of the front face of the lock pillar; they should touch each other when you close the door. Same goes for the pairs of wedges between the outer corners of the convertible top lid and the return flange on the quarter panels - some painters cover up the screw holes and don't re-install the wedges.
Last edited by JohnZ; 09-18-2015 at 05:05 PM.
#35
Race Director
And don't forget the tapered wedges at the top of the rear face of the door inner panel and at the top of the front face of the lock pillar; they should touch each other when you close the door. Same goes for the pairs of wedges between the outer corners of the convertible top lid and the return flange on the quarter panels - some painters cover up the screw holes and don't re-install the wedges.
#36
The high-volume-cabbed C2 coupe looks like a 2+2, while a convertible with hardtop DEFINITELY is reserved for JUST two in a small, intimate space.
From '63 to '67 the convertible/coupe production and sales ratio went from 50/50 to almost 70/30 AIR. In spite of fastback rarity, unless it's a SWC a same year/condition C2 convertible usually brings at least as many $$$ as a coupe in recent years.
(And there's less cargo room if she takes your hardtop shopping!)
Last edited by sub006; 09-18-2015 at 11:48 PM.