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View Cart1971-76 Pontiac Catalina, Brougham, Bonneville & Grandville Convertible Top and Convertible Top Parts
Weatherstripping | Cleaning & Protectant | Accessories | Important Information
Original Patterns: Our Pontiac convertible tops are made from original dealer patterns. Computer directed cutting of patterns from original tops guarantee accurate fit. These are not "copies of copies."
Fabrics: Pinpoint vinyl is the classic original topping. It has tiny hemispheres as the surface texture. Haartz Stayfast canvas is a three layer fabric with an elegant canvas outer face. The bonding central layer is butyl rubber which gives the top maximum durability.
Zippered Rear Windows: The rear window is zippered, as original. You may choose either a plastic or a glass rear window (with or without defroster.)
Both Parts of Top:
There are two parts to this top, integrated during installation. The main top and the rear window section may be ordered separately (if you wish to retain one part of the existing top.)
If you desire only a top, instead of the full restoration package with accessories, then please order both parts of the top.
Installation: This is a classic two part top. You can read a thorough summary of the construction and installation of this top via the link at the bottom of this page. The full manual for installing these "scissor tops" is available. The manual is a 35 page illustrated, step by step, book. We have had many owner installers do this job. Because of the complex nature of this folding top, do not attempt this without the full scissor top manual. Be prepared to reposition the top a few times, per the instructions, in order to achieve perfect alignment.
Hold Down Cables: A pair of cables, one on each side, thread through pocketed hems on the main top sides. The ends of the cables hold the top to the frame. New cables are recommended with each new top. For these "scissor tops" we recommend the original configuration GM cables for proper installation.
Tacking strips: Much of the installation involves tacking or stapling (there is no sewing involved.) Tacking into the bow over the windshield (header bow) and into the bow over the rear window (rear top bow) is done into special strips embedded in these frame bows. We offer new tack strips for the front and rear top bows. They should not be required until after at least two tops have been stapled to them. For information on repairing or replacing the rear base line tacking forms, please email us at techsupport@mtmfg.com.
Top pads: Top padding "builds out" the top. Pads can last through two tops but should be replaced if of suspect condition.
Top Boots: You have the option of using a top storage boot. Our boots fit as originally designed. Boots and boot clips are listed with "Accessories."
Hydraulics:
We now stock hydraulic cylinders, motor-pumps, and hoses for your convertible tops. All are made to OEM specifications. Each can be ordered separately; however, when ordering hydraulic cylinders we recommend replacing both. The chances are that both hydraulic cylinders were manufactured at the same time: if one is on its way out the other may follow. If the top is raised and one hydraulic cylinder is working harder than the other the result over time can lead to a slightly bent convertible top frame. The replacement of both hydraulic cylinders will ensure that the top raises and lowers symmetrically.
Systems for this car take Automatic Transmission Fluid (ATF) and have a 5 year warranty when used with this fluid. Brake fluid should not be used as it voids the warranty. We also offer an installation manual when ordered.
The 12 volt motor-pumps include a mounting bracket with rubber grommets to reduce vibration.
We also offer a rebuilding service for motor-pumps. Not all are repairable, but it is less expensive to have one rebuilt than to buy a new one. The motor-pump would need to be sent to us for evaluation. Hoses come with all new fittings and are made specifically to fit your car.
Parts in this category (Pontiac Catalina, Brougham, Bonneville & Grandville) fit cars for years: 1971, 1972, 1973, 1974, 1975 and 1976.
We a now pleased to offer hydraulic cylinders, hydraulic motor pumps, and hydraulic hose sets. Also, checkout our newly added roof rail weatherstripping seals, front header weatherstripping seals, door weatherstripping seals, trunk weatherstripping seals. Look for extra savings on weatherstripping seals kits.
