I just lower my body onto my frame. I have the OPGI body bushing kit. For the lower rubber piece that the bolts go thru, which end is up? If I put the hollow site up, the rubber just squishes out. If I put the hollow side down, the washer goes right up in there. Which is correct? <a href="http://s919.photobucket.com/user/usasquint/media/71%20GS/C8525132-5E17-4306-9D30-EF826F70122E-576-0000005ABAD7EDC8_zps2ca31ddc.jpg.html" target="_blank"><img src="http://i919.photobucket.com/albums/ad31/usasquint/71%20GS/C8525132-5E17-4306-9D30-EF826F70122E-576-0000005ABAD7EDC8_zps2ca31ddc.jpg" border="0" alt=" photo C8525132-5E17-4306-9D30-EF826F70122E-576-0000005ABAD7EDC8_zps2ca31ddc.jpg"/></a> <a href="http://s919.photobucket.com/user/usasquint/media/71%20GS/987F0474-C269-4011-A9E2-2A4815F9213A-576-0000005AB401C3B8_zps16fd499b.jpg.html" target="_blank"><img src="http://i919.photobucket.com/albums/ad31/usasquint/71%20GS/987F0474-C269-4011-A9E2-2A4815F9213A-576-0000005AB401C3B8_zps16fd499b.jpg" border="0" alt=" photo 987F0474-C269-4011-A9E2-2A4815F9213A-576-0000005AB401C3B8_zps16fd499b.jpg"/></a>
so if they squish out to much when tightening, do I have to back up and start over or just go ahead and torque per the manual?
You want them squished out some so they're tight but yours do seem to flatten out more than I've seen. The mount itself has a spacer built into it and you tighten the lower washer up tight to it as you have done in the picture. I would be tempted to add couple smaller flat washers under the big washer which would allow it to tighten up against the mount spacer with less stress on the lower rubber donut.
Chris, get rid of those OPG pieces of crap now. The are total junk and not safe. The part you are using is usually called the cushion. Buick never used such and inferiror piece. The correct Buick units are thicker rubber and have a molded in washer. Cars www.oldbuickparts.com sells them part #BM644A...You need to buy these to be safe.
I have to agree with Dave, I have never liked that style mount. I haven't seen them is years so I'm a little surprised anyone is still selling them, but I don't buy from OPG so..... The cushions are so flimsy that in the event of a real tight corner they will not do a very good job of holding the body in position. We never like to spend money on things only to find out you have to do it again but it happens.
Those are not made correctly at all. No way would I ever use them. The opening is too large in the bottom cushion. Duane
The spec is for them to handle 35-40 lbs/ft of torque. Those OPG's will flatten out at those #s. The Cars units will handle that torque. The correct flange headed bolts are also available from AMK. There are two lenghts. I have found the longer ones that are listed for the core support work best for all locations except under the doors where you need the shorter ones. ---------- Post added at 01:35 PM ---------- Previous post was at 01:33 PM ---------- Here is the link to Cars part # http://www.oldbuickparts.com/catalog/advanced_search_result.php?keywords=BM644a&x=29&y=22 ---------- Post added at 01:44 PM ---------- Previous post was at 01:35 PM ---------- This is the link to the bolts. http://www.amkproducts.com/Catalog_PDF/24-38.pdf I have found that part #11631 worked for me on all locations except under the doors where they bottom out. I used #11629 for under the doors only. They list these for body mounts But I found them to be a little short except under the doors. They are on page #29
Thank you for the advice. I had to use those bushings for now since i'm getting ready to move and needed the body back on the frame. I will get those correct bushings and use those. I actually have my original bolts and they look good. except for the front ones. When i was torquing the bolts they totally look questionable. I'll get them swapped out after the move. One question: I don't have the manual so I don't know which number it is but..... I think its #4, just behind the door before the wheel well. Does that get a bolt or just the rubber bushing only like #5? Mine has a the threads for a bolt so I put a normal one there. #5 is the only set with the rubber only right now.
Sorry bout that. I just meant I didnt have the manual handy while I was posting. I have the manuals needed. Or I'd be in trouble. ---------- Post added at 03:27 AM ---------- Previous post was at 02:54 AM ---------- I was just looking at the CARS website info for the bushings. Do I need to order upper and lower or just lowers to replace the OPG pieces that I have currently? ---------- Post added at 03:31 AM ---------- Previous post was at 03:27 AM ---------- I was just looking at the CARS website info for the bushings. Do I need to order upper and lower or just lowers to replace the OPG pieces that I have currently?
There the ones behind the doors are just plug in units as are the next ones back. There are two sets of plug ins(no bolts used) even though the holes are threaded. ---------- Post added at 12:10 PM ---------- Previous post was at 12:07 PM ---------- From Cars you just need the lowers if you fell confident the upper are good. The part number for lowers is BM644A. If you want to be authentic paint the lowers yellow. The originals may have been dipped in yellow paint. I put a good coat of Krylon Sun yellow spray on them. ---------- Post added at 12:11 PM ---------- Previous post was at 12:10 PM ---------- From Cars you just need the lowers if you fell confident the upper are good. The part number for lowers is BM644A. If you want to be authentic paint the lowers yellow. The originals may have been dipped in yellow paint. I put a good coat of Krylon Sun yellow spray on them.
when I removed the original body bushings from my '72 GS, several years ago, the bushing were not solid painted. instead, there was a colour ring (yellow or purple,?)
Stupid ? But, if I was going to replace all frame and core support bushings, how many total? Which part #'s with the dash# also please? (I need to do My 68 Skylark), Thanks
Only the mounts get painted not the bolts. This was done for assembly line ID only. All the lower cushions I have taken off(I still have several originals} were completely yellow even the molded in washers. The upper mounts were often striped as mentioned in orange or violet usually. ---------- Post added at 12:40 PM ---------- Previous post was at 12:38 PM ---------- Tim, not sure about 68's. Do they use two on each side under the firewall. like 70-72?
I don't know yet as I haven't looked under the car and have never done the bushings before. I was hoping they would be the same 68-72.
Most likely they are. The best set I have found is the one Fusick Olds sells. I threw the lower cushions away and use the BM644A from Cars. The kit will also be 2 short as Olds only used one set under the firewall. They may sell you spares. Inline Tube also sells the same ones by the piece. These are the most like the Buicks I have found. The ones under the doors are more like the originals too. None of the other sets are. It is more expensive this way but how often is the body off to do this job? ---------- Post added at 05:08 PM ---------- Previous post was at 05:00 PM ---------- Look at Inlinetube #12473 under the New Olds parts. It looks like they are all in there less the two core support units. You will need to of the #12477 for the core support. This looks like the same set Fusick sell. I would still spring for the BM644A cushions from Cars. http://www.inlinetube.com/New Products/new products Oldsmobile.htm
I'm looking at replacing these on my '68 Skylark. Are these things the same size at all locations? I already replaced the two at the core support. Looking at the Old Buick Parts site, I see several different styles of BM644A, so I'm not certain which to choose. Maybe I missed it in the previous posts? At the InLine Tube site, the INL12473 is a box 'o' bushings, but I can't tell again, whether they are all the same or not.
