Anyone Modify 87-88 V6 Dog Bone For Poly Bushings? (Page 3/3)
Spadesluck JUN 08, 01:13 AM

quote
Originally posted by Patrick:

I linked to that in the 4th post of this thread.



I am just trying to hammer home the fact that it does work. 😆😉
reinhart JUN 08, 06:10 AM
double post

[This message has been edited by reinhart (edited 06-08-2021).]

reinhart JUN 08, 06:27 AM

quote
Originally posted by Spadesluck:


Its nice you assume mine is flopping around... Come on man, why would I build something like that or why would anyone do that? I can assure you it works as intended with nothing loose.



LOL you're the same person that linked to a thread where it is quite obvious the end result is a bushing that is visibly loose and sloppy in just a picture, let alone once installed. If you are using that as an example of a successful operation then yes it does make me question whether you did yours correctly.
reinhart JUN 08, 06:29 AM

quote
Originally posted by Spadesluck:


I am just trying to hammer home the fact that it does work. 😆😉



If your idea of "works" is a bushing that if you're meticulously lucky, contacts the center third of the width of the dogbone then it "works" as in the bushing goes in. Now if you do a simple measurement before making a single cut in the inner ribbed bone, I can easily prove to you that there is no way the standard dog bone sized 1-3/4" urethane bushings are contacting 2/3rds of the diameter of the bone hole. The outer width at the edges gets as wide as 1-7/8". I was able to hammer in a 1-7/8" sleeve nearly all the way in before the aluminum cracked when it got to the center 1/3rd where I failed to hone it enough. I didn't hone any of the outer 2/3rds and it slipped in fine umntil that center 1/3rd. Reread my posts if you came in late.

Now the 1/3rd contact area is assuming you perfectly cut the center section at the perfect 1.72 inches the urethane bushings are. This would get you that 1/3rd contact area. Now measure an uncut bone and you'll see the outer third on either side on both ends is significantly larger than 1.72 or 1.75 inches. It's 1-7/8". Thus it is physically impossible for the bushing to solidly mount inside the entire width of the bone.

Realistically, the likelihood of even getting that perfect cut for a 1/3rd contact is slim. Check the thread you linked to and you can see just his slight deviation in the boring left at least one of the two bushings flopping around. I had the same experience when I cut mine. Even if you got the outer parts of the center 1/3rd cut correctly, if you deviated in the middle of the center a little more, then it wouldn't wobble but would have no support in the middle of the center 1/3rd either. But again even a perfect cut is only supported by 1/3rd of the bone. It would be the equivalent of cutting the bone into 1/3rd of its original width and reinstalling it. That the loss of support you're achieving under the best case lucky stars scenario.
Spadesluck JUN 09, 12:24 AM
Reinhart, you are right. I will gracefully bow out.