Hi there, when you removed the rear spoiler, did you use any sealant when you put it back on, or were the screws enough? I bought a pretty rough '85 that had the same glass separation happening - the previous owner had used caulk all over the place, including to attach the spoiler. I'd prefer to not goop it all up, unless you're actully supposed to :) Thanks for the video !
Thanks for watching and for commenting! I didn’t use any adhesive or sealant on the spoiler - just screws. I think I had to replace a few and the rest I rethreaded with a tap and die set. I’d suggest making sure all the old caulk from the PO is removed so t doesn’t interfere with the new urethane. Also, make sure the two drainage slots on both sides of the spoiler stay open so water doesn’t collect up there. I park under trees so I end up having to clear them with pipe cleaners every couple of weeks :-) Good luck with your ‘85!
Thank you for this video and your collective work. Some of the following comments apply to your hatch repair video also: It appears that the sealant used during initial manufacturing of glass to aluminum frame was not completely dried when Porsche or their hatch supplier assembled the rear spoiler or side pieces but as you indicate, and I agree, this was not a design requirement and is not a design intent to seal the urethane spoiler to the glass and frame. There was some kind of residue of sealant on the outside of the black frame about 1/4 “ (6mm) each side of the M4 studs, where the side spoiler attach. I believe that a thin, small amount of light bond RTV sealant or maybe it is a glue, should be applied around the base of each screw. There was not an even amount on each hole. This is outside the hatch, so it’s not for water intrusion protection to the car but to protect the fastener. The screw you drilled out in your repair video was the toughest for me as well but I was able to get them all out. I needed to retap the 7 M5 blind holes to ensure they were clean. I did not need to do this for the 4 M4 holes where the spoilers meet. The rear spoiler has an aluminum frame inside it that looks basically to be a plate that the urethane is molded over, It is important to retap these (I also had to hand drill these blind holes into the spoiler by a few mm) threads completely so there is no cross threading during re-assembly. I replaced the rubber trim 944 512 463 00. This part removed from my 1989 had this same part number molded into it, but had shrunk quite a bit over time. There is an adhesive used on the top of the groove on this part against the outside of the back edge of the hatch before the spoiler is bolted on. This same adhesive is on top and bottom of that gasket on the ends outside of the notched section (if you have this part or you remove the rear spoiler you will see the notches under the spoiler). On a brand new 944 512 463 00, it looks like this gasket is glued after the stainess steel fancy washer is inserted where that screw you drilled out is located and it’s necessary to carefully cut it carefully to put the M5x20 in and fit it around the glass. If this seems esoteric, it’s also a necessary step to correct 944/924/968 rear glass / hatch repair.
Hi there, when you removed the rear spoiler, did you use any sealant when you put it back on, or were the screws enough? I bought a pretty rough '85 that had the same glass separation happening - the previous owner had used caulk all over the place, including to attach the spoiler. I'd prefer to not goop it all up, unless you're actully supposed to :) Thanks for the video !
Thanks for watching and for commenting! I didn’t use any adhesive or sealant on the spoiler - just screws. I think I had to replace a few and the rest I rethreaded with a tap and die set. I’d suggest making sure all the old caulk from the PO is removed so t doesn’t interfere with the new urethane. Also, make sure the two drainage slots on both sides of the spoiler stay open so water doesn’t collect up there. I park under trees so I end up having to clear them with pipe cleaners every couple of weeks :-)
Good luck with your ‘85!
Thank you for this video and your collective work. Some of the following comments apply to your hatch repair video also: It appears that the sealant used during initial manufacturing of glass to aluminum frame was not completely dried when Porsche or their hatch supplier assembled the rear spoiler or side pieces but as you indicate, and I agree, this was not a design requirement and is not a design intent to seal the urethane spoiler to the glass and frame. There was some kind of residue of sealant on the outside of the black frame about 1/4 “ (6mm) each side of the M4 studs, where the side spoiler attach. I believe that a thin, small amount of light bond RTV sealant or maybe it is a glue, should be applied around the base of each screw. There was not an even amount on each hole. This is outside the hatch, so it’s not for water intrusion protection to the car but to protect the fastener. The screw you drilled out in your repair video was the toughest for me as well but I was able to get them all out. I needed to retap the 7 M5 blind holes to ensure they were clean. I did not need to do this for the 4 M4 holes where the spoilers meet. The rear spoiler has an aluminum frame inside it that looks basically to be a plate that the urethane is molded over, It is important to retap these (I also had to hand drill these blind holes into the spoiler by a few mm) threads completely so there is no cross threading during re-assembly. I replaced the rubber trim 944 512 463 00. This part removed from my 1989 had this same part number molded into it, but had shrunk quite a bit over time. There is an adhesive used on the top of the groove on this part against the outside of the back edge of the hatch before the spoiler is bolted on. This same adhesive is on top and bottom of that gasket on the ends outside of the notched section (if you have this part or you remove the rear spoiler you will see the notches under the spoiler). On a brand new 944 512 463 00, it looks like this gasket is glued after the stainess steel fancy washer is inserted where that screw you drilled out is located and it’s necessary to carefully cut it carefully to put the M5x20 in and fit it around the glass. If this seems esoteric, it’s also a necessary step to correct 944/924/968 rear glass / hatch repair.