Rear quarter window too long for aperture?

[Benny]

I found a very nice pair of rear quarter windows to install in my '61 shell (mid-1960 build date), but I'm having an issue where the window is effectively too long for the aperture by 1/8-3/16".

There has been no damage to the aperture, and the window frame is in beautiful shape. When I attach the piano hinge to the b-post, and then close the window, it wants to catch the edge of the c-post, instead of nesting into the aperture.

The right side is a bit too long, bu is workable, however, the left side is driving me nuts. Has anyone ever dealt with this? Were the VERY early shells different, in this respect?

[mniwagn]

are both of your windows frames the same size left vs. right?

[johnsimister]

I had this problem. It seems that over the years the metal frame moves outwards on the glass as the rubber interlayer degrades. Cured by taking the frame apart, clearing out the perished bits of rubber and using a strong sealant to bond the glass and frame together. The assembly was then clamped to make it as short as possible while the sealant set. I didn't actually do the job myself - the body restorer did it so I don't know exactly what the sealant is. It's the stuff that windscreen fitters use for bonded screens.

Anyway, it worked and the windows now sit properly in their apertures.

John

[guru_1071]

. It's the stuff that windscreen fitters use for bonded screens.

tigerseal or sikaflex

[johnsimister]

Exactly.

[Benny]

I had this problem. It seems that over the years the metal frame moves outwards on the glass as the rubber interlayer degrades. Cured by taking the frame apart, clearing out the perished bits of rubber and using a strong sealant to bond the glass and frame together. The assembly was then clamped to make it as short as possible while the sealant set.

Interesting feedback, thanks. I can tell the seals inside the frame have degraded pretty badly, as they are flaking out in some locations. Perhaps they swell up as they age, and push the frames outward. I'll try getting them apart, and cleaning them out. I've got some Sikaflex on the shelf, that would be an easy project if the frames come apart without a fight.

Thanks.