Halfshaft Bolt Answers (all threads merged)
- Thread starter dbk
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H
HHGT
Guest
This is an article back from November, but interesting regardless. Hyperlink to this thread as well!!!
http://blogs.edmunds.com/roadtests/428
http://blogs.edmunds.com/roadtests/428
H
HHGT
Guest
WELL WELL WELL - I think we have us a name at Ford
May be, just may be, Mr. Glenn Miller of Ford can address some of these issues! Anyone bought this paper yet? Please let me know before I go buy one.
http://www.sae.org/technical/papers/2004-01-1260
May be, just may be, Mr. Glenn Miller of Ford can address some of these issues! Anyone bought this paper yet? Please let me know before I go buy one.
http://www.sae.org/technical/papers/2004-01-1260
rumor mill
My friend who cant say who he is, what he does, where he works, thinks that if we keep discussing this, and doing all this analoging and design research here on the forum that maybe a problem that might be there or might not maybe will get solved or not.
My friend who cant say who he is, what he does, where he works, thinks that if we keep discussing this, and doing all this analoging and design research here on the forum that maybe a problem that might be there or might not maybe will get solved or not.
B O N Y
MODERATOR & FGT OWNER
I appreciate your comments, but I know both of us replaced our bolts and washers and wired the new bolts in place. We started as a preventative action and both found out we were on the verge of failures. We both paid to have our cars fixed and did not ask Ford to reimburse us. Quite a bit of commonalty, wouldn't you say?
Now, maybe I need to reread the posts, but I haven't read from Jay, who I respect, a possible solution, or a plan of attack the is going to test on his own car. I know that he is being contacted by an experienced member of this forum explaining ways to reduce legal exposure. This is a frustrating issue.
By the way, by chance did you save you concaved washer, someone here in Fresno wants to source another supply?? PM if we can borrow yours for a couple of days.
H
HHGT
Guest
Okay, your post reminds me of a Pinocchio appearance in a new movie where he talks just the way you did to prevent having his nose to grow. English?
- Aug 25, 2006
- 4,436
Jay
Relax; everyone is shooting at the same target.
As always I enjoyed our chat a short while ago and feel that you have a good feeling for the cause of the problem. Having shared this I suspect that by now Ford and Ricardo do too. If in fact something as simple as less than consistent tolerances at the splines is a reality then those gals that will be affected are truly an unknown. It would also support the idea that whether an early or late build would make no difference because in the end it would come down to the associated movement at the splines of any given gal.
Now Jay shared that he had a few of his engineering associates look at the situation to garner their opinion and they each said that the problem was able to be easily understood and they also said that it could be corrected rather than patched. Now when I say patched I mean that if the splines on a given gal are loose enough to allow for measurable rotational movement then even with hardened washers, extreme ARP bolts, and then wire tied into place the likelihood is the bolt will crack sooner or later because of the side thrush cycling placed upon them. You see the bolts by design were never intended to take any side load; this was to be managed by the tight fitting splines and the bolts by design are simply there to hold the assembly together.
This is why Jay made mention of the center bolt design because this would allow the splines to lock into place whether rotating forward or backward with no stress placed upon the bolt. It would simply serve as the clamping aka securing device and then by design and its location would allow for a modicum of rotational movement. Now we also discussed how far he should pursue this issue because of liability. He first indicated the idea of simply presenting it to Ford and letting them run with it to which I said “Jay; Ford has already exhausted the funds for this project as such the likelihood is slim and none; furthermore they have a warranty on the gals and if one breaks they will fix it”. When compared to expecting Ford to allocate new money to the process this would likely be the direction they would rest with. We then discussed ways to mitigate his liability concern as such he is preparing some solid scale drawings to share with his engineering associates as well as myself to determine the feasibility and associated cost.
I did not want to spend anymore time in this thread and yet I like all parties involved and feel the tension building as such I hope that I have been able to clear the air a bit.
BTW; Jay shared that he is aware of a gal that has had two failures after having the new hardened washers installed.
Takes care
Shadowman
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SYCO GT
GT Owner
I must say this is all fairly confusing. I have a 2006 Ford GT, VIN 1559.
I contacted Ken Grody Ford, and they have ordered the "update kit" and will call me when it comes in. (1,900 miles, no known problems yet)
I've read all the failures, and am not aware of multiple failures. But is it the general opinion that current Ford "upgrade kit" will not generally improve the condition / problem at this point?
I want to be as pro-active as possible, but also would hate to "jump the gun" and do work that won't put my GT in a substantially better condition with respect to likelihood of occurence.
Any thoughts appreciated.
I contacted Ken Grody Ford, and they have ordered the "update kit" and will call me when it comes in. (1,900 miles, no known problems yet)
I've read all the failures, and am not aware of multiple failures. But is it the general opinion that current Ford "upgrade kit" will not generally improve the condition / problem at this point?
I want to be as pro-active as possible, but also would hate to "jump the gun" and do work that won't put my GT in a substantially better condition with respect to likelihood of occurence.
Any thoughts appreciated.
BlackICE
GT Owner
Yes, I saved the 2 bent washers and I believe the 4 bolts. I am not sure if I have all 4 bolts though. The washers have indentations where the bolts heads touched. It is clear that the washers were deformed by over torqueing, or over stressing.
BlackICE
BlackICE
GT Owner
That is very useful information, supporting the loose spline theory. A repair was done with new parts and they still broke. Any information on the mileage and type of use between failures? Did the same side fail twice, or one failure on each side?
BlackICE
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AZGT
GT Owner
Everyone went off on Jay or Jay's ideas. I want to draw back to this idea of studs with cotter keys or lock nuts.
Any ideas? Would this work? Sorry, not smart enough to know te answer, but same effect (holding) but from a different direction. I think I would trust this before a bolt (wel, maybe no since a bolt has more contacting threads).
If (big if) the studs stay in place, car would still move even if lock nut came off. Shear should be OK. Cotter keys worked in the "old days." What about now?
B O N Y
MODERATOR & FGT OWNER
Hello,
Can you send me one washer for sizing? I would appreciate it. I will be glad to return it, if you desire. Thanks!
Cheers,
Daniel S. Bonyhadi
2555 West Bluff Ave. Suite 105
Fresno, Ca. 93711
BlackICE
GT Owner
I will send one of them to you as soon as I find some stamps. You may hold on to it until my lawyer needs it as exhibit A.
BlackICE
B O N Y
MODERATOR & FGT OWNER
shhhhhh.... that is the secret pass word to close a thread. Between you and me this one has ran it's course. Appreciate your help. G'night:biggrin
BlackICE
GT Owner
Bony, you should have let me know about the secret word before. I would have used it when I saw the word Lonestar in a post.
BlackICE
analogdesigner
GT Owner
nota4re,
The message was to make an important point when you had questioned whether I should have been commenting Ford's understanding of the problem:
Finally, you yourself quote
Quote:
Even Ford does not understand the problem!
So again, after 4 attempts, why didn't the problem get solved the 1st time??? They still do not have the problem solved. Do you???
B O N Y
MODERATOR & FGT OWNER
AZGT
GT Owner
You're right. Made me go look at a picture. Does make it tougher when they are so close together. Back to the thinking board.
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AZGT
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