I noticed recently when driving with my convertible top up that I get a thump or rattle that seems to happen in the middle of the roof. Almost sounds like the outside shell is rising up and then thumping down on the vert frame. It seems to happen more in a crosswind.

Is this a common occurence with vert tops? Maybe something wrong with my top?

 

Cant say it's common but I've had it in extreme conditions. Day to day mine sits quite tight. As you say, it means your fabric is either stretching or is loose.

Is it a reasonable effort to tighten the fasteners when you close the roof? If its easy maybe it's not tensioning properly. It should snug down and the fabric should be stretched tight.

You can adjust the fit of the locking plates and there's an adjustment of the bows but normally that's to stop wind noise/leaks around the window or to stop chafing on the tonneau cover.

My guess would be you need to adjust the lock plates.

Document ID# 656616
2002 Chevrolet Corvette
________________________________________
Folding Top Latch Adjustment



1. Adjust the latch handle (1) for proper fit, by raising or lowering the striker (3).
Important
You should not have to loosen the striker screws.
2. Use a nylon mallet and a drift to punch the striker (3). Punch upward to loosen the striker or punch downward to tighten the striker.
Notice
Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
3. Inspect the striker screws for proper torque.
Tighten
Tighten the striker screws 10 N•m (89 lb in).



4. Loosen the latch handle bolts.
Important
Assure that the latch handle base is parallel to the striker.
5. Reposition the latch handle forward or rearward. To avoid squeaks and rattles maintain a minimum of 2 mm (0.08 in) clearance between latch handle and the latch striker.
6. Tighten the latch handle bolts.
Tighten
Tighten the bolts to 13 N•m (10 lb ft).

 

Nice writeup! I have not had any problems with my y2k top, but it's good to know there's some adjustments that can be done without necessarily going to a shop

 

Thank you very much for the detailed post!!! I am going to check the my top to see if it is tensioning properly.

 

I haven't had that problem yet and thanks for the great write up