Home page
SPONSOR AD

Support our Vendors!  |  Advertise Here

Topic: Should I worry about the pitted Rod Bearing Journal?

in Forum: C3 Engines


Already a Member?
Login
Not yet a Member?
Register for Free!

Should I worry about the pitted Rod Bearing Journal? (1/3)
 1/11/11 1:39am
jp75vette
Former Member

Send Private Message

Bloomfield Hills, MI - USA

Vette(s):
1975 Corvette coupe, 4 speed manual, 383 ci 9.5:1,Edelbrock dual plane Air Gap intake, Alum Heads,Comp Cam, roller Rockers, PS,PB,Tilt


Joined: 6/29/2008
Posts: 199

One other thing I observed in the tear down is that one of the rod bearings had noticeable pits per the photo below.
 
Should I be worried about this? The oild passage way hole is much larger than the pits and the pits have smooth edges. The crankshaft is a GM casting number 395159; which based on my research; this is a cast crank that was used in 1970-1980 400 cid SBC. It has the XL mains; 2 piece seal and is externally balanced.
 
Do I need to woory about this? If so, what recommendations do you have?
 
What are recommendations on bearings?
 
Our Sponsors help support C3VR
Should I worry about the pitted Rod Bearing Journal? (2/3)
 1/11/11 6:12am
yostusota
Former Member

Send Private Message

York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top


Joined: 5/18/2010
Posts: 1518

Looks like you are having some fun! The pitting is not a big worry since I assume you are going to have the crank cut...not a big cost at all..where did you find a 400? I haven't seen one of them laying around in some time..torque monster!
Rich

______________

My first parade at Carlisle 2010
Should I worry about the pitted Rod Bearing Journal? (3/3)
 1/11/11 9:13am
Adams' AppleLifetime Member
Lifetime Member
Moderator
Send Private Message

Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas


Joined: 11/8/2003
Posts: 20126

Crank definitely needs turned to get the pits out. You wouldn't wanna actually run that crank without having it turned, imho. The rod bearings having pits also would indicate that this engine may have been setting up for a while...
What are ya actually doing here? Building a new engine?


______________

Joel Adams
C3VR Lifetime Member #56    

My Link


(click for Texas-sized view!)
             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

Our Sponsors help support C3VR