Custom 9.5 front axle build (1 Viewer)

Toyoland66

SILVER Star
Joined
Feb 3, 2004
Messages
652
Location
Colorado
There are definite advantages to using the 80 balls. Although the birfields aren’t the weak link anymore - even with mini truck sized birfs if they are 30 spline chromo the shafts break before the birfs - the 80 knuckles are stronger. The trunnion bearings are spaced further apart and the brakes are better. The steering options are the challenge, although the high steer options are limited (hellfire knuckles or Slee arms) they aren’t necessary unless running SOA leafs. Linked or SUA you can run a RHD steering arm on the drivers side knuckle and Chevy TREs.
 

RustyNailJustin

Supporting Vendor
Joined
Dec 26, 2002
Messages
1,952
Location
Ridgway CO, Klamath Falls OR
It will never work 🤣
I have been running a Diamond Housing with 80 knuckle balls hellfire, hellfire, RCVs, ARB in a 9.5 3rd for several years.
Our original housing was trussed enough it never bent but we started crushing knuckle balls. Went to the Diamond with 80 balls and this thing has survive hell several times.
If you follow Ultra4 Racing you know.

_JM13416.JPG
 
Joined
Jan 14, 2011
Messages
104
Location
Soddy Daisy, TN
It will never work 🤣
I have been running a Diamond Housing with 80 knuckle balls hellfire, hellfire, RCVs, ARB in a 9.5 3rd for several years.
Our original housing was trussed enough it never bent but we started crushing knuckle balls. Went to the Diamond with 80 balls and this thing has survive hell several times.
If you follow Ultra4 Racing you know.
Why hell yeah, love it!!
 
Joined
Jan 14, 2011
Messages
104
Location
Soddy Daisy, TN
It will never work 🤣
I have been running a Diamond Housing with 80 knuckle balls hellfire, hellfire, RCVs, ARB in a 9.5 3rd for several years.
Our original housing was trussed enough it never bent but we started crushing knuckle balls. Went to the Diamond with 80 balls and this thing has survive hell several times.
If you follow Ultra4 Racing you know.
Awesome to know!! What gear ratio are you running?
 

Clutchee

I'm fun sized!
Joined
Apr 19, 2004
Messages
4,133
Location
Hotel M-F, home weekends!
Have you gotten the housing yet? Worst experience in customer service ever from Diamond. Took multiple emails and contacts and still to wayyy to long.

*sorry to muddy your thread, just wanting to let you know my experience in case it occurred to you or can be avoided.
 
Last edited:

Firemedic831

Supporting Vendor
Joined
Nov 24, 2017
Messages
398
Location
Oregon
I have had great service and fast shipping. Brian always gets back to me quickly . Not sure why you are having issues
 

Tank5

SILVER Star
Joined
Nov 15, 2009
Messages
3,044
Maybe it helps if you are a vendor. When I ordered an axle from Brian my 6 week quote turned into 7 months before I got it and it took a lot of phone calls to get it.
 

Zjohnsonua

SILVER Star
Joined
Feb 1, 2018
Messages
1,255
Location
Huntsville, Alabama
As to the thirds' castings, I prefer the 80/100 since it's smooth, thus offering fewer (make that 0) oblique surfaces to snag on. I've been told that it offers improved oiling to the front pinion bearing, but I can't confirm that. As for the housings, I like the SF 80 rear with knuckle balls added. That's on the list of I-should've-done-that-in-this-build. Next time...
 
Joined
Jan 9, 2004
Messages
1,626
There are definite advantages to using the 80 balls. Although the birfields aren’t the weak link anymore - even with mini truck sized birfs if they are 30 spline chromo the shafts break before the birfs - the 80 knuckles are stronger. The trunnion bearings are spaced further apart and the brakes are better. The steering options are the challenge, although the high steer options are limited (hellfire knuckles or Slee arms) they aren’t necessary unless running SOA leafs. Linked or SUA you can run a RHD steering arm on the drivers side knuckle and Chevy TREs.
Where I wheel, the birfields are still the weak link. We break RCV or trail gear inner cages before anything else. They usually take out the splines on the inner shaft when they pop. I have broken 4 or 5 chromoly birfields and never an inner shaft other than the splines getting stripped off. In my opinion the 80 series balls provide you a stronger steering knuckle, but that is not the problem with breakage that my friends and I experience. Lots of guys with full hydro steering and trunion failures are way down the list.
 
Joined
Jan 14, 2011
Messages
104
Location
Soddy Daisy, TN
Have you gotten the housing yet? Worst experience in customer service ever from Diamond. Took multiple emails and contacts and still to wayyy to long.

*sorry to muddy your thread, just wanting to let you know my experience in case it occurred to you or can be avoided.
No, not been received and emails have not returned last 2 weeks. Not my preferred way of doing business, especially when they have your money.
 

Tank5

SILVER Star
Joined
Nov 15, 2009
Messages
3,044
As to the thirds' castings, I prefer the 80/100 since it's smooth, thus offering fewer (make that 0) oblique surfaces to snag on. I've been told that it offers improved oiling to the front pinion bearing, but I can't confirm that. As for the housings, I like the SF 80 rear with knuckle balls added. That's on the list of I-should've-done-that-in-this-build. Next time...
I agree with your assessment. I was told all the 9.5 housings are strong but went with an 80 series because the outside had better lines and expected it would slide off or deflect objects better.
 
Joined
Mar 22, 2010
Messages
2
Where I wheel, the birfields are still the weak link. We break RCV or trail gear inner cages before anything else. They usually take out the splines on the inner shaft when they pop. I have broken 4 or 5 chromoly birfields and never an inner shaft other than the splines getting stripped off. In my opinion the 80 series balls provide you a stronger steering knuckle, but that is not the problem with breakage that my friends and I experience. Lots of guys with full hydro steering and trunion failures are way down the list.
If I read that right you are blowing 80 series RCVs? What kind of rigs are you running and whats the terrain and driving style?
 
Joined
Jan 14, 2011
Messages
104
Location
Soddy Daisy, TN
Where I wheel, the birfields are still the weak link. We break RCV or trail gear inner cages before anything else. They usually take out the splines on the inner shaft when they pop. I have broken 4 or 5 chromoly birfields and never an inner shaft other than the splines getting stripped off. In my opinion the 80 series balls provide you a stronger steering knuckle, but that is not the problem with breakage that my friends and I experience. Lots of guys with full hydro steering and trunion failures are way down the list.
What size tire and what rig/power plant!
 

EWheeler

2 Cruisers, No Garage
Joined
Apr 5, 2008
Messages
557
Location
Menifee, CA
It will never work 🤣
I have been running a Diamond Housing with 80 knuckle balls hellfire, hellfire, RCVs, ARB in a 9.5 3rd for several years.
Our original housing was trussed enough it never bent but we started crushing knuckle balls. Went to the Diamond with 80 balls and this thing has survive hell several times.
If you follow Ultra4 Racing you know.

View attachment 2641021

Does Diamond make their own 80 series balls, or do they re-use factory ones?
 

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