ARP Halfshaft Bolt Upgrade Interest List
- Thread starter nota4re
- Start date
I already have ARP making the bolt kit for the half shafts. The delivery date is a couple weeks away. We have already received the outer bolts and are only waiting on the inner bolts. We have already made the large washer as well out of a higher grade material and a higher rockwell hardness and thicker too. All of the fasteners have lock wire provisions and are black oxide coated.
In addition to this, we are looking at a billet replacement axel flange to replace the stock unit. After careful evaluation, most of the failures are related back to the original soft washer however, the splines fit too loosely on the transaxle and that is going to constantly work against any bolt and washer replacement.
I will post when the bolt kit is available once I talk with ARP. And for the axel flanges, we are just waiting on the factory blueprint so we can get spline data.
Thanks,
John Mihovetz
Accufab Inc
In addition to this, we are looking at a billet replacement axel flange to replace the stock unit. After careful evaluation, most of the failures are related back to the original soft washer however, the splines fit too loosely on the transaxle and that is going to constantly work against any bolt and washer replacement.
I will post when the bolt kit is available once I talk with ARP. And for the axel flanges, we are just waiting on the factory blueprint so we can get spline data.
Thanks,
John Mihovetz
Accufab Inc
RSR1975
GT Owner
Derry
GT Owner
Gimbal
GT Owner
John Mihovetz, Do you have any idea what kind of axial loading the hub would see in a worse case sceanrio? I was told by Ford the CV joint near the tranny slides axially and therefore I would assume there is no large axial loads. I am thinking of adding a needle thrust bearing to allow the play between the hub spline and axle splines preventing bolt head loading. This bearing would be placed outside the thick washer if there is room within the hub.
gtracer
GT Owner
prmoldoaks
GT Owner
- Jul 31, 2006
- 124
Gene Cassone
GT Owner
FlorIdaho Chris
Yeah, I've got one.
AMB
GT Owner
John
I called you last week about this, BUT you didn't returned my call. I talked to ARP about the 8740 Chrome Moly (Yield Strength = 160,000 psi and Tensile Strength = 190,000 psi) and the ARP2000 (Yield Strength = 180,000 psi and Tensile Strength = 215-220,000 psi) 12-Point M8-1.25x34mm Bolts, drilled for Safety Wire. What Bolts do you have comming??
AMB
I called you last week about this, BUT you didn't returned my call. I talked to ARP about the 8740 Chrome Moly (Yield Strength = 160,000 psi and Tensile Strength = 190,000 psi) and the ARP2000 (Yield Strength = 180,000 psi and Tensile Strength = 215-220,000 psi) 12-Point M8-1.25x34mm Bolts, drilled for Safety Wire. What Bolts do you have comming??
AMB
B O N Y
MODERATOR & FGT OWNER
No, Federal Law is very clear, they would have to prove by changing the bolts you effected another part of the car.
Vince, please make no mistake that the root cause is due to inadequately strengthened bolts. It's not. The culprit is the "presumably improper" play in the coupler/halfshaft connection. So, the real question is if very high strength bolts can sufficiently overcome this presumed design error. It's possible that they will, and it's also possible that they don't. I wish I could say for sure. What is increasingly clear, however, is that there is NO adequate fix that exists as of this writing.
In answer to your other question, there's no conceivable way Ford could make an issue with your waaranty if you have installed superior parts in your car. Not a chance.
pbear
New member
RedGT
GT Owner
