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Front end rebuild + A-arm replacement alternative

Timd

Freshman Member
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I see a lot of people forking out their cash on expensive reproduction A-arms, all the while imagining the cringe on the faces while they do. Not that I disagree we doing things right, but I just wanted to shed some light on the fact that there are alternatives. Recently I rebuilt my suspension and like everyone else had worn A-arms. I just wanted to bring some hope to the subject of repairing them.

The fine print: This is not a how-to, it's a "how I did it" and should not be taken as a guide, nor is it garenteed.

Initial stages.
dscf0015_179.jpg

Shot bushings.
dscf0016_120.jpg


The A-arms were drilled out, and new peices were made. Any machine shop would be able to do this for a small cost.
n507304377_72418_7293.jpg


Mounted on the car for test fit, this ensures that alignment will be right.
n507304377_72426_9258.jpg


Tacked in place while on the car.
n507304377_72434_1222.jpg


These were simply MIG welded, with no special heating. No cracks, no warping.
n507304377_72419_7534.jpg


Polyurethane bushings replace the wornout rubber ones. If you buy these and they come with the little tubes of grease, first off: the grease is sticky to say the least. Second, don't be afraid to load it on, they go a long way.
n507304377_72435_1471.jpg


Final stages.
n507304377_72420_7766.jpg


On all fours.
n507304377_72439_2493.jpg


Classic
n507304377_72440_7364.jpg



This cost me VERY little. I won't go into it, because I had some favours, but I'm certain anyone could have it done for significantly less than even one new arm. These arms, if ever worn again would of course be replaced. But they lasted 37 years first time round, so I'm sure I'll get many years from this repair.

I always like seeing things like this when I'm in a bind, so I hope this helps someone.

-Tim
 
Re: Front end rebuild + A-arm replacement alternat

What is the thread size and pitch on the bushings? I've tried to get them made but they are an odd thread.
 
Timd said:
If you buy these and they come with the little tubes of grease, first off: the grease is sticky to say the least.
Yeah, ask me how how long it took me to figure out where that annoying 'squeek' was coming from. Load that stuff on.
 
I have made those cups. at the time i had the pins in hand, i dont have any kicking around at the moment, but i do have the programs i wrote to make them. i just took a look and did a little back figuring. one cup has a single thread and is the smaller of the two, according to my numbers this one is a 37/64 x 16tpi thread. the second cup is the larger, has two threads. the thread for the pin is a 21/32 x 16. the outher thread (for the cap) is a 47/64 x 14 thread.

as i recall i remember thinking how odd ball these were, but standing in front of the machine and being able to make any thread i care to, and even make them up as i wish. it made little difference to me.

Hope this info is some help


mark
 
Re: Front end rebuild + A-arm replacement alternat

ChrisS said:
What is the thread size and pitch on the bushings? I've tried to get them made but they are an odd thread.

I am uncertain of the correct thread, as mine were made at a shop. But if you're unsure, I would just take in a new pin and the grease fitting to a shop, they can have it done.
 
Re: Front end rebuild + A-arm replacement alternat

I enjoy seeing this type of work done on these old cars. Not least of which, because I'm very cheap. I would much rather fix it myself than buy something new and replace it. It looks like a very nice and well done job!

I mentioned somewhere else that on the race car, we used to use a 5/8 bolt and just run it through the trunion. Spacers to hold the upright centered.

Where I live now, any welding on the A-arm is not allowed, but I bet they wouldn't find out with a little camouflage covering (undercoat). That in itself seems ridiculous since the parts were welded from the factory.
 
Re: Front end rebuild + A-arm replacement alternat

actually mine werent welded, they are brazed. ok so it is a form of welding.


mark
 
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