Bearing clearances...
#1
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Car: 1991 Z28
Engine: 383
Transmission: T-5
Axle/Gears: 3.08 10 Bolt
Bearing clearances...
I have never figured out how to go about changing the bearing clearances. If a bottom end is assembled and the clearances are not to spec how are they changed to within spec?
#2
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Car: 91 Camaro RS(RealSlow)
Engine: 3.1L
Transmission: 700R4
Axle/Gears: unknown/mostlikelycrappy
change the bearings.
i think the spec is all about how worn out the bearings can be.
so new one will be always in spec(should be i think)
and as it wears out u r going down the line.
i dont think u can adjust the physical clearance
besides buying a new bearing, and resurface the bearings or something.
i think the spec is all about how worn out the bearings can be.
so new one will be always in spec(should be i think)
and as it wears out u r going down the line.
i dont think u can adjust the physical clearance
besides buying a new bearing, and resurface the bearings or something.
#4
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there really wouldn't be any reason to cheack the clearance on used bearings. if you're that close to the parts you'd be changing bearings. you'd want to measure and inspect parts after it's disassembled. if the diameter of the pins and mains isn't to spec you'd replace the crank or have it ground undersize. if it's ground undersize you'd run over size bearing to bring it within spec and if you replace it with new parts you'd run standard bearings. you'd still want to measure clearances with new parts just to make sure. plasti gage is pretty worthless but better than nothing, an inside mic or bore gage and OD mics are the way to go, or measure the holes and the bearing shells plus the crank and do the math. if you're really splitting hairs there are bearings made that are +.001 and -.001 and you can mix and match the halfs with standard shells to reduce or increase the clearance.
#5
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Car: 1991 Z28
Engine: 383
Transmission: T-5
Axle/Gears: 3.08 10 Bolt
Yea that was more of my question. If it gets put together and the clearances aren't correct (with new parts) how you would correct that.
#6
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Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
measure the holes and the bearing shells plus the crank and do the math. if you're really splitting hairs there are bearings made that are +.001 and -.001 and you can mix and match the halfs with standard shells to reduce or increase the clearance.
You can use plastigauge, and do ok, but if you plan on building a motor again, get the bore gauges, and micrometer set.
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