ok so i got a new 91/92 z28 highrise spoiler and of corse i have all these extra holes in the body that i dont want so how can i fill them in so it doesnt look like there were holes there before.........i was thinking of geting this stuff i saw at pepboys that was like putty that came in a stike nd when u mixed it with the other stick it would get really hard and its made for holes do u think this would work?

 

Nope.
Get them welded up. I am just about to put an aero spoiler on my RS in the uk. I will repair these hole like I always have: Clean area around holes and tape small, clean plates (that are a bit bigger than the hole) under the holes. Put a MIG weld tack on which will hold the plate. Then continue around the perimeter until it is fully welded up. Grind down the welds, apply filler, rub down, prime and paint. This is a permanent repair. The epoxy putty you mentioned is not.

Welding is cheap, but the paint is not!!

Good luck.

 

Yep.....weld those suckers up.....the best and only trusty way to go!

 

bondo and spot puttys are good for a little while, but if you want a smooth professional looking body, welding is the only way to go. trust me, i have learned the hard way

 

mine is welded not by me though... it was on the car when i bought it, someone did a pretty good job though you cant see where the old holes were at.

 

on mine, they welded a small metal plate behind each hole...and then used some sort of fiberglass to cover it.....no one can tell that there was ever any holes there....

 

thanx i plane on doing it this week i drilled the new holes and everything and that came out good so now i gatta fill them in i got some fiberglass body filler so ill weld somthing behind the holes nd fill it in with the body filler

 

If you do it right, filler can look fine. I used filler on the GTA when I put a 4th gen spoiler on. You need to pound the holes down so that there's material around the hole for the filler to stick to. Put a little tape over the inside of the hole and put the filler over. For the first thick coat you want to use the chopped-reinforced fiberglass filler. It's stronger and won't crack. Sand that smooth then do a skim coat of normal filler, and sand again. The important part is making sure that the hole is pounded down though. There's no way to get the filler to stay in the hole if it's flush with the surface. When you sand it, it'll just fall through the hole. Pounding it down so that the hole is in a crater will allow the filler to hold to the surrounding areas, and you'll wind up with a quarter-sized dimple, and by the time you smooth out the top coat, you'll wind up with a very large area of thin filler.

But please keep in mind that like any kind of body work, if you don't know what you're doing, it's going to look like a 5 year old did it with silly putty.

And welding is definately better... if you know what you're doing. If you're not a good welder, you'll warp the sh*t out of the panel and make it look worse than the holes looked.

Since not everybody has access to a welder and necessary grinding tools, I figured I'd explain how to do it with filler. Whether you weld or use filler, you need to know what you're doing if you expect it to look decent.