Antennta Mast Broke Off. Solution? (Page 1/2)
Dennis LaGrua JUN 08, 05:15 PM
Tried to remove an old antenna mast. It was frozen in place and when turned with a wrench it easily broke off. Does anyone here know how to fix this problem without removing the entire assembly? Can the broken stud be removed?
Barring any easy solution I guess the way to remove that broken stud is to drill it and use an easy out.
UPDATE: Drilled hole through the broken stud. Inserted stud extractor. Still no movement with turning force. Don't want to twist too hard as extractors do break. Soaking in PB Blaster. We will see what tomorrow brings.
------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

[This message has been edited by Dennis LaGrua (edited 06-08-2019).]

Spadesluck JUN 08, 09:34 PM
I was going to suggest something similar to what you tried. If that did not make it budge chances are you will need to get to the back side of it. You know what that means!
Dennis LaGrua JUN 08, 09:54 PM

quote
Originally posted by Spadesluck:

I was going to suggest something similar to what you tried. If that did not make it budge chances are you will need to get to the back side of it. You know what that means!



The more that I examine the antenna mast, it becomes obvious that the threaded stud may have been welded or pressed in. I'll just make the hole larger, thread it and insert a piece of threaded rod. Now to find out what threads are on the antenna mast where it screws in. Always issues with these old cars!.

------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

hercimer01 JUN 08, 10:07 PM
The 85GT I just restored had this problem. The antenna mast is universal to most GM cars today. I got one from the local pick and pull that looked brand new. The mast base I had to buy a used one from the Fiero Store. I looked at trying to repair the broken base, but it didn't look promising. Keep in mind the threaded part cannot touch ground it is the center conductor of the coax.

------------------
Project Genisis Lo Budget 3800SC swap
12.840@104.8 MPH Intense-Racing 1.9 rockers, 3" exhaust, 3.4 pulley, ZZP tune and 18 year old tires.

88 Coupe under construction SOLD

88 formula 3.4L 4t60 swap SOLD

88GT resurrection in progress.

[This message has been edited by hercimer01 (edited 06-08-2019).]

theogre JUN 08, 11:17 PM
the "stud" isn't a stud but more like a bolt embedded in epoxy/plastic in the rest of the base.
If you finally turn the broken the plastic is ruined too.

Can it be fix to take the GM aerial again? not easy if you can and likely need it on a bench to work.

you could attach a wire to new hole then run the wire under the fender and windshield trim.
Use a small short screw to hold it. Coat joint w/ silicone/brake grease.

If you drill thru the "stud..." I think the Base goes around and under the broken "stud" so screw you use should not hit bottom.

I've been doing this for 10+ years so idiots don't have antennas to bend/break.

------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave

thx569 JUN 09, 01:00 AM
There was a post from a guy who used a Bic pen cover and glued it into the hole. This is not an antennae. He bought a universal one and laid it down under the front compartment just forward of the windshield. DHGATE.com (Chinese Ebay) has electronic antennae that mount hidden most anywhere. Do search on car radio antennae
Patrick JUN 09, 01:16 AM

quote
Originally posted by Dennis LaGrua:

Does anyone here know how to fix this problem without removing the entire assembly?



I had this same problem when I got my Formula. The easiest solution was to just swap the whole antenna assembly over from a wrecked Fiero. Turned out to be a very simple procedure... honestly!
Spadesluck JUN 09, 02:45 AM
How about just make a smooth fender and hide an antenna in the fender since it would see you will need to pull it anyways?
Patrick JUN 09, 03:03 AM

quote
Originally posted by Spadesluck:

How about just make a smooth fender and hide an antenna in the fender since it would see you will need to pull it anyways?



That's just it though... the fender doesn't need to be removed. Keep in mind that these plastic fenders are very flexible. If I remember correctly, just the top few bolts need to be removed, and then the top of fender can simply be pulled out enough to gain access to the antenna assembly inside.

[This message has been edited by Patrick (edited 06-09-2019).]

olejoedad JUN 09, 08:12 AM

quote
Originally posted by Patrick:

That's just it though... the fender doesn't need to be removed. Keep in mind that these plastic fenders are very flexible. If I remember correctly, just the top few bolts need to be removed, and then the top of fender can simply be pulled out enough to gain access to the antenna assembly inside.




Yup!