Convertible top adjustment.
06-05-2017, 10:50 AM
#1
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Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Convertible top adjustment.
Anyone have a schematic on how to adjust the front bow/pins on a convertible top? Searched, but didn't find anything.
Previous owner of my '87 said that they always had a problem with the top since new. This car here:https://www.thirdgen.org/forums/hist...nvertible.html That's probably why it's spent the past 30 years folded down.
First day I got it, I couldn't get the top to latch, ie., getting the pins and holes lined up until I loosened the 4 adjusting bolts in the rear. And even then it was tough.
Better now, but still takes a lot of finagling to line the front pins up with the windshield. There has to be a way to improve it.
Any words of wisdom or schematics?
Previous owner of my '87 said that they always had a problem with the top since new. This car here:https://www.thirdgen.org/forums/hist...nvertible.html That's probably why it's spent the past 30 years folded down.
First day I got it, I couldn't get the top to latch, ie., getting the pins and holes lined up until I loosened the 4 adjusting bolts in the rear. And even then it was tough.
Better now, but still takes a lot of finagling to line the front pins up with the windshield. There has to be a way to improve it.
Any words of wisdom or schematics?
Last edited by chazman; 06-05-2017 at 10:56 AM.
06-07-2017, 11:15 PM
#4
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Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: Convertible top adjustment.
"I think", the top needs to be moved back a bit, however the adjustment bolts are at their full travel.
This from the stickey in this forum:
Where is the UPSTOP and DOWNSTOP? Anyone have a pic of that?
The secret may lie in Tootie's link.......
This from the stickey in this forum:
Adjustment
UPSTOP
The upstops may be adjusted to obtain proper alignment between the top latch guide pins and the windshield header receivers.
Lower the top. Loosen the upstop jam nut and turn screw clockwise.
Raise and latch the top.
Raise No. 5 bow to the full vertical position.
Turn the upstops counterclockwise until they contact the linkage.
Unlatch and lower the top. Tighten the upstop jam nut while holding the upstop from turning.
Raise the top and inspect the alignment of the top latch guide pins to the header receivers.
DOWNSTOP
The downstops can be adjusted for proper clearance between the main rail and No. 4 bow when the top is lowered completely. The downstops have right angle bends and face outward.
Raise and latch the top.
Loosen the downstops nuts and adjust as required.
Tighten the downstop nuts while holding downstops in position.
Lower the top and inspect the clearance between the main rail and the No. 4 bow. Also inspect the clearance of the tonneau panel.
UPSTOP
The upstops may be adjusted to obtain proper alignment between the top latch guide pins and the windshield header receivers.
Lower the top. Loosen the upstop jam nut and turn screw clockwise.
Raise and latch the top.
Raise No. 5 bow to the full vertical position.
Turn the upstops counterclockwise until they contact the linkage.
Unlatch and lower the top. Tighten the upstop jam nut while holding the upstop from turning.
Raise the top and inspect the alignment of the top latch guide pins to the header receivers.
DOWNSTOP
The downstops can be adjusted for proper clearance between the main rail and No. 4 bow when the top is lowered completely. The downstops have right angle bends and face outward.
Raise and latch the top.
Loosen the downstops nuts and adjust as required.
Tighten the downstop nuts while holding downstops in position.
Lower the top and inspect the clearance between the main rail and the No. 4 bow. Also inspect the clearance of the tonneau panel.
The secret may lie in Tootie's link.......
Last edited by chazman; 06-08-2017 at 08:46 AM.
06-08-2017, 11:54 PM
#5
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Join Date: Dec 2001
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Car: 1989 IROC-Z. Original owner
Engine: LB9. Dual Cats. Big Cam
Transmission: World Class T-5
Axle/Gears: BW 3.45
Re: Convertible top adjustment.
Thanks Tootie Pang, I think I did it with the help of your pdf!
Last edited by chazman; 06-09-2017 at 12:40 AM.
