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Author Topic:   Ball joint taper
Fomocosho
Dirt Maniac

Total posts: 135
posted June 05, 2005 06:14 PM  
I have a 83 regal and id like to put the longer AFCO 20038-1 ball joint in the lower arm. Is the taper the same as the stock metric one or will the spindle need to be reamed? How will this affect my bumpsteer? Has anyone checked to see how much this will change the roll center?

Fomocosho
Dirt Maniac

Total posts: 135
posted June 06, 2005 07:43 PM  
btt

gahainsey
Dirt Maniac

Total posts: 113
posted June 06, 2005 08:28 PM  
The spindle will need to be reamed. This setup is a total hassle. You have to weld a sleeve in the lower control arm also. I would run the taller upper joint. All you have to do is grind out the hole slightly and redrill the bolt holes. The taller lower will affect bump steer. The tall upper does not affect it as much. I ran the tall lowers before. I would recommend not unless you have lots of time. Buy your own reamer too. Ream several spindles and build two sets of control arms if you do choose this route.

outlaw#03
Dirt Roller

Total posts: 25
posted June 06, 2005 09:06 PM  
gahainsey "I would run the taller upper joint. All you have to do is grind out the hole slightly and redrill the bolt holes. "

What do these come on? I've been running the big lower ball joints (6117) and your right their a pain in the **** !!!

Fomocosho
Dirt Maniac

Total posts: 135
posted June 07, 2005 02:55 PM  
what size reamer do I need?


Thanks

gahainsey
Dirt Maniac

Total posts: 113
posted June 07, 2005 03:23 PM  
You can buy them from AFCO or what I do is buy them from Advance or NAPA. The ball joints came stck on mid seventies 2 WD trucks. I always ask for 78 chevy 2WD.
I THINK the lower joint is 2 inch per foot taper PLEASE CHECK BEFORE BUYING ONE. The 2 WD truck uppers fit the stock metric spindle hole. If you do decide to go the tall lower weld cut swear ream fiddle cuss route, only ream the taper until the threaded part of the joint passes thru the spindle. If you ream too deep you negate the effec5t of the taller joint. Then you have max hassle with no benefit. If you install the tall lowers you will need to fix bump steer also (more fun)

gahainsey
Dirt Maniac

Total posts: 113
posted June 07, 2005 03:24 PM  
When i said grind out the hole in the previous post I was referring to the hole in the A Arm that the ball joint sits in. Just want to clarify

maniac motors
Dirt Maniac

Total posts: 128
posted June 07, 2005 03:35 PM  
moog k6136 is more populare 3/8 raised heigth upper and can be made to fit metric arms as everyone said must ream metric spindle to fit believe arm to be older chevy 2wheel drive truck. pretty common joint at auto store.

Eagle71
Dirt Full Roller

Total posts: 39
posted June 08, 2005 11:50 AM  
Where do you race Fomocosho? I think I might know you.
Ed

    

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