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Under the car
 
Join Date: Jan 2008
Location: Ross, Ohio
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filling bumper end cap holes

I am in the process of rebuilding my car, as part of it, I am tucking in the rear bumper and getting rid of the bumperettes. Anyone who has ever had one of their bumperettes off knows that there are big holes in the bumper end caps where the bumperette bolt goes through. Does anyone know a good method for filling this hole and finishing it off smooth to be painted over? I am not talking about the holees in the aluminum part of the bumber, I already plan to weld them up and smooth them off.

What type of plastic are these caps made of?
Old 09-22-2010, 05:21 AM
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Originally Posted by matthewb View Post
I am in the process of rebuilding my car, as part of it, I am tucking in the rear bumper and getting rid of the bumperettes. Anyone who has ever had one of their bumperettes off knows that there are big holes in the bumper end caps where the bumperette bolt goes through. Does anyone know a good method for filling this hole and finishing it off smooth to be painted over? I am not talking about the holees in the aluminum part of the bumber, I already plan to weld them up and smooth them off.

What type of plastic are these caps made of?
Why bother with all the hassle if it was me I'll order a fiberglass one from A.I.R. very good quality & will last a long time ,also very reasonable price ,like any fiberglass part you migth have to do a little fitting to get rigth but nothing serious.Once finish & install it will look like this.
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Old 09-22-2010, 06:16 AM
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Thanks for your reply.

That does look good, I have seen it before. My bumper will still offer some protection if someone bumps the rear end and my way is a lot cheaper. Its really just labor. Not going to cost me anything for the welding and hopefully not going to cost me anything to fill the holes on the bumper caps.

Anyone with any other ideas?
Old 09-22-2010, 06:22 AM
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There are 3M plastic bumper repair kits out there at your local car parts store...just use the epoxy and the fibre filler sheet and fill 'em in, skim some plastic filler, prime and paint.

It might cost you $20 for a kit...that's all mine cost me.
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1988 944S
17 inch Cup 2's, euro bumper conversion
Magnaflow 2 1/2" exhaust with K & N 4 inch custom intake
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Old 09-22-2010, 07:40 AM
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I did some looking around for kits. Could you ppossibly get the part number for the kit you are talking about. Looking online it is not clear if the kits come with the mesh as well as the epoxy or what. Is this the same project you were trying to do when you used this stuff? Did you do all your filling with the mesh? I have a couple of old bumper caps that are damged that I could cut patch pieces out of to fill the holes then I would just need to basically glue them in. The mesh could be used for reinforcement. What would you suggest?
Old 09-22-2010, 09:13 AM
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Sure can...will look tonight.
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Rick Harrison
1988 944S
17 inch Cup 2's, euro bumper conversion
Magnaflow 2 1/2" exhaust with K & N 4 inch custom intake
MaxHP chipped
Old 09-22-2010, 09:14 AM
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OK...

I've got the Proform PF702 plastic bumper repair kit @ $25.00.

There is a 3M kit (the one I thought I had) but I cannot find info yet.

The Proform kit has plastic mesh for backing/strength plus proper prep, hardening and accelerating chemicals for a good bond.

I am going to do exactly this project this fall myself. The euro bumper would be nice, but IMO a rear-end tap is more likely to happen, and the bumper would be beneficial. I've seen cars with this done, and it looks good.
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Rick Harrison
1988 944S
17 inch Cup 2's, euro bumper conversion
Magnaflow 2 1/2" exhaust with K & N 4 inch custom intake
MaxHP chipped
Old 09-23-2010, 05:51 AM
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The 3M kit is pn 04847.

You'll need a special 2 cylinder gun, 2 tubes and several 2 into 1 tips for this.

It is expensive, more for a bodyman that will use all of the epoxy.
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Rick Harrison
1988 944S
17 inch Cup 2's, euro bumper conversion
Magnaflow 2 1/2" exhaust with K & N 4 inch custom intake
MaxHP chipped
Old 09-23-2010, 05:54 AM
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How about a rear bumper from a 924? It'll bolt right up and you may have less of an issue.
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Old 09-23-2010, 10:53 AM
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Originally Posted by rickharrison View Post
OK...

I've got the Proform PF702 plastic bumper repair kit @ $25.00.

There is a 3M kit (the one I thought I had) but I cannot find info yet.

The Proform kit has plastic mesh for backing/strength plus proper prep, hardening and accelerating chemicals for a good bond.

I am going to do exactly this project this fall myself. The euro bumper would be nice, but IMO a rear-end tap is more likely to happen, and the bumper would be beneficial. I've seen cars with this done, and it looks good.
Is that kit available at someplace like autozone or something? Or do I order it online or what? Hopefully I can just pick it up somewhere. Thanks for the information.

In doing some searching about this kit online, I came across a pf704 kit that is supposed to be for flexible things. Do you think that may be better for this application or do you think that is for really flexible stuff? I am thinking maybe I want the 702 kit because I really don't want it to be flexing around or my paint will crack.
Old 09-23-2010, 11:32 AM
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Yes, Proform should be available at Autozone and the like...I got mine from Carquest.
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Rick Harrison
1988 944S
17 inch Cup 2's, euro bumper conversion
Magnaflow 2 1/2" exhaust with K & N 4 inch custom intake
MaxHP chipped
Old 09-24-2010, 04:38 AM
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why are you guys using plastic bumper end than other primered one? the price is a bit the same.
Old 12-01-2010, 12:37 AM
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remove rubber bumper thingy, fill in with short hair fiberglass. knock it down with 80 grit. smooth it 100, block wet sand with 220 finish with 320. prime. primer sealer. paint.
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Old 12-01-2010, 05:57 PM
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Old 12-01-2010, 05:57 PM
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