Author Topic: Bearing clearance  (Read 8886 times)

airframer

  • Jr. Member
  • *
  • Posts: 60
    • View Profile
Bearing clearance
« on: March 23, 2010, 12:13:56 am »
So I just used plastigage to check the connecting rod bearing clearance and it was .010, that is way above what it should be, do they sell oversized bearing kits or am i looking at getting a new crank?
05 TJ, Lifted, Locked, Geared, and Homemade armor.

hillbilly

  • Hero Member
  • ****
  • Posts: 1491
  • adam lewis - appalachian american - B.O.D.
    • View Profile
Re: Bearing clearance
« Reply #1 on: March 23, 2010, 07:03:52 am »
summit racing sells all kinds of them thats where i usually get mine from.
build it, beat it, break it, fix it, repeat
A member of the church requests to be buried in his jeep because "It ain't never been in a hole it couldn't get out of."
   91 xj 8.5" lift -33" x 12.50 and my own additions
 94 xj (wifes) 3.5" lift and the boys 1979 cj7

airframer

  • Jr. Member
  • *
  • Posts: 60
    • View Profile
Re: Bearing clearance
« Reply #2 on: March 23, 2010, 10:34:13 am »
I went to summit and all I saw were undersized bearings, correct if i'm wrong and i hope for my sake i am but if the gap between the stock bearing and connecting rod is .010 then i need and oversized bearing to make up for the difference correct?
05 TJ, Lifted, Locked, Geared, and Homemade armor.

Rusty XJ

  • Sr. Member
  • ***
  • Posts: 253
  • Rickie Wilson Jr.
    • View Profile
    • Facebook
Re: Bearing clearance
« Reply #3 on: March 23, 2010, 01:13:13 pm »
I think you're looking for undersized. It goes by the size of the inside diameter. The bearing will have more material which would lead one to believe it's "oversized" but the inside diameter is smaller.
Rick Wilson Jr.
Is that DEATH WOBBLE or did we just enter Pennsylvania?
'95 XJ 2 Door, 4.0, 5spd, 7" random lift, 35x12.5 BFG ATs, 4.56 gears, Dana 44 Mini-spooled, Dana 30 w/ Detroit Truetrac and manual hubs, Bushwacker Flares, Warrior Front Bumper, JCR Rear Bumper, etc etc...

airframer

  • Jr. Member
  • *
  • Posts: 60
    • View Profile
Re: Bearing clearance
« Reply #4 on: March 23, 2010, 01:46:32 pm »
Ah so when they say undersized they mean the inside diameter is smaller than original, i thought it referred to the gap. so if it is .010 undersized that means the inside is .010 smaller, and my gap is about .010. Sounds like it might work.
05 TJ, Lifted, Locked, Geared, and Homemade armor.

Davew

  • Full Member
  • **
  • Posts: 167
  • Jenn's On Board Mechanic
    • View Profile
Re: Bearing clearance
« Reply #5 on: March 23, 2010, 03:52:13 pm »
Look on the back side of your old bearings they will indicate  STD., .010, .020,.030.  Did you put a crank in? Hard to tell from your pics. It's very rare that you screw up a bearing and the crank is OK . It's also possible that the old bearings can be all different sizes.
Stupidity, if left untreated is self-correcting

airframer

  • Jr. Member
  • *
  • Posts: 60
    • View Profile
Re: Bearing clearance
« Reply #6 on: March 24, 2010, 12:00:52 pm »
Lol its the stock crank, all the bearings are the same and say .001 I also micd them all and they are the same size.
05 TJ, Lifted, Locked, Geared, and Homemade armor.