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8.8 setting pinion

  • Thread starter Thread starter sharp2377
  • Start date Start date Feb 1, 2013

sharp2377

Member
May 22, 2012
86
2
19
Feb 1, 2013
#1
  • Feb 1, 2013
  • #1
Ok, I'm doing a 3.73 gear swap in a 86 rear. I have pinion depth,.30 shim, and new koyo bearings. I had the new bearing pressed on at the machine shop. I slipped in the pinion into the housing. Slid the crush ring on, then new bearing, oil slinger, seal, then mount. The problem is I tightened the nut as far as I could with a standard 1/2 ratchet then switched to a breaker bar. At no time did the pinion have that wobble that you check for while tightening the nut. My understanding is it needs 200-400 ft lbs to crush the crush sleeve. Right now I have 25" torque on the pinion. I'm afraid I never actually crushed the crush sleeve. It never had that wobble you look for when trying to crush it. Any ideas?
 

TOOLOW91

If you're the village idiot what's that make me?
20+ Year Stangneter
Nov 29, 1999
8,481
8,677
234
S.I.NY
Feb 2, 2013
#2
  • Feb 2, 2013
  • #2
I had to run the snot out of mine with a impact gun
 

TOOLOW91

If you're the village idiot what's that make me?
20+ Year Stangneter
Nov 29, 1999
8,481
8,677
234
S.I.NY
Feb 2, 2013
#3
  • Feb 2, 2013
  • #3
I don't remember how much drag was on. it but it was in the spec I just kept stopping and checking as I went with the gun and its been together for over 800 miles and multiple 100mile an hour runs
 

84Ttop

They make new pistons every day, so why worry?
5 Year Member
Jul 2, 2009
5,222
3,254
204
South Jersey
Feb 2, 2013
#4
  • Feb 2, 2013
  • #4
I hit it with the impact till the drag is good and call it a day
 
Reactions: toolow91

gearheadboy

15 Year Member
Jan 15, 2003
1,425
177
84
Greencastle Pa
Feb 3, 2013
#5
  • Feb 3, 2013
  • #5
^ what they said. I hit it with the gun and use a needle type torque wrench to keep checking the drag.
 
Reactions: toolow91
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