Crankshaft
Thread Starter
Registered User
Joined: Aug 2012
Posts: 39
From: DoD n Stuttgart GE
Crankshaft
Team,
I am putting my stuff on my motor. After torqueing the main crank caps, I have "play" on the crank. I noticed it when I picked up on the crank shaft to reposition the engine.
How much distance/clearance should there be on the main caps to the crank?
Thanks,
Bearing Set
SLP-4281M
---- Engine ----
1968
350
Block# 395558 2
---
I found:
.0004 - 0021
# 5 .0015 - 0031
I am putting my stuff on my motor. After torqueing the main crank caps, I have "play" on the crank. I noticed it when I picked up on the crank shaft to reposition the engine.
How much distance/clearance should there be on the main caps to the crank?
Thanks,
Bearing Set
SLP-4281M
---- Engine ----
1968
350
Block# 395558 2
---
I found:
.0004 - 0021
# 5 .0015 - 0031
Last edited by RonzBoyz4; Feb 21, 2014 at 04:31 AM. Reason: More info
Registered User
Joined: Nov 2008
Posts: 8,498
From: Central Fl
Team,
I am putting my stuff on my motor. After torqueing the main crank caps, I have "play" on the crank. I noticed it when I picked up on the crank shaft to reposition the engine.
How much distance/clearance should there be on the main caps to the crank?
Thanks,
Bearing Set
SLP-4281M
---- Engine ----
1968
350
Block# 395558 2
---
I found:
.0004 - 0021
# 5 .0015 - 0031
I am putting my stuff on my motor. After torqueing the main crank caps, I have "play" on the crank. I noticed it when I picked up on the crank shaft to reposition the engine.
How much distance/clearance should there be on the main caps to the crank?
Thanks,
Bearing Set
SLP-4281M
---- Engine ----
1968
350
Block# 395558 2
---
I found:
.0004 - 0021
# 5 .0015 - 0031
I'm not sure how you can feel play with those tight clearances. Less than a half thousandths on a main will almost guarantee a spun bearing.
Thread Starter
Registered User
Joined: Aug 2012
Posts: 39
From: DoD n Stuttgart GE
1968 Crankshaft
So, I came to the conclusion, the crank must have been turned, at least once, in the last 45 years....
When my plastigauge arrives, I will see just how much and order the correct bearings....
Anyone need a set of new bearings?
Thanks
http://www.oldsmobility.com/old/enginespecs.htm#Crankshaft_Bearing_Journal_Specifi cations
When my plastigauge arrives, I will see just how much and order the correct bearings....
Anyone need a set of new bearings?
Thanks
http://www.oldsmobility.com/old/enginespecs.htm#Crankshaft_Bearing_Journal_Specifi cations
Last edited by RonzBoyz4; Feb 26, 2014 at 02:17 AM. Reason: Corrections
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