Seat belt installation
Posted by Hans Ahlness On 2015/9/22 23:12:19
I installed 3-point retractable belts for my front seat positions. I wanted the retractable units because they are much more user-friendly and comfortable, and I wanted shoulder belts because of the added safety factor.
I bought my belts from Wesco Performance, but there are many retailers with similar sets.http://wescoperformance.stores.yahoo.net/welr.html
The retract unit has to mount straight below the shoulder belt pivot point, and there is a body mount bolt at the base of the door pillar which is a perfect spot to attach it. The body mount bolt sort of floats within a bushing that makes up the center of the mount rubber. The seat belt components mount using 7/16" fine thread bolts, larger in diameter. I wanted the seat belt mount to be solid and not rubber mounts, so I removed the rubber mount pieces and replaced them with washers, with a bushing through the center. The holes through the body and the frame outrigger are larger than the new bolt, so that's why I needed the bushing and large washers. Smaller washers at the top and bottom of the stack clamp it all together, and I used nylon locknuts at all the mounting bolts.
The shoulder belt pivot point needs to mount 0-8" above the seatback, I mocked it up a few times until it felt good and ended up at the high end. There is an existing hole in the pillar that happened to match the spot I picked, so all I had to do to mount the backing doubler (that has the bolt threads in it) was slide it up inside the pillar to the proper spot, and attach it with some pop rivets (the bolt is what really holds it tight). I had to bevel the edges of the doubler plate a little as the sheet metal of the pillar is curved a little, and I fished it up in place with some string.
The other end of the belt can mount to the floor near the retract unit, and the buckle end mounted to the tunnel behind the seat. I had to cut some slots in the base of the front seat frame for the belts to pass through, and then you have to provide some kind of chafe guard for the metal edges. I am using "cat track", which is some plastic stuff for just this purpose that is an aviation part that we use at work all the time.
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I bought my belts from Wesco Performance, but there are many retailers with similar sets.http://wescoperformance.stores.yahoo.net/welr.html
The retract unit has to mount straight below the shoulder belt pivot point, and there is a body mount bolt at the base of the door pillar which is a perfect spot to attach it. The body mount bolt sort of floats within a bushing that makes up the center of the mount rubber. The seat belt components mount using 7/16" fine thread bolts, larger in diameter. I wanted the seat belt mount to be solid and not rubber mounts, so I removed the rubber mount pieces and replaced them with washers, with a bushing through the center. The holes through the body and the frame outrigger are larger than the new bolt, so that's why I needed the bushing and large washers. Smaller washers at the top and bottom of the stack clamp it all together, and I used nylon locknuts at all the mounting bolts.
The shoulder belt pivot point needs to mount 0-8" above the seatback, I mocked it up a few times until it felt good and ended up at the high end. There is an existing hole in the pillar that happened to match the spot I picked, so all I had to do to mount the backing doubler (that has the bolt threads in it) was slide it up inside the pillar to the proper spot, and attach it with some pop rivets (the bolt is what really holds it tight). I had to bevel the edges of the doubler plate a little as the sheet metal of the pillar is curved a little, and I fished it up in place with some string.
The other end of the belt can mount to the floor near the retract unit, and the buckle end mounted to the tunnel behind the seat. I had to cut some slots in the base of the front seat frame for the belts to pass through, and then you have to provide some kind of chafe guard for the metal edges. I am using "cat track", which is some plastic stuff for just this purpose that is an aviation part that we use at work all the time.
Attach file:
(83.78 KB)
(65.46 KB)
(42.42 KB)
(53.30 KB)
(43.43 KB)
(83.23 KB)
(61.87 KB)
(89.65 KB)
(50.59 KB)
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