Oversize vs under size vs standard bearing shells
#46
Captain Obvious
Super User
Super User
Building and engine and fixing an engine are two totally different things. The OP seems to be didn't it so, only fix what's broken and leave the rest alone OR propey rebuild the whole thing. Unless the bearings are labeled what cylinder they came from, some measuring is in order.
#47
Rennlist Member
Thread Starter
I think will replace the connecting rod bearings and re-ring.
Here are some pictures of the crankshaft bearings:
Here are some pictures of the crankshaft bearings:
#48
Rennlist Member
Thread Starter
Here's a picture of one rod end bearing in situ.
#49
Rennlist
Basic Site Sponsor
Basic Site Sponsor
Virtually everything said in the prior pages can be easily simplified....don't assume bearing clearances. Measure or have your machinist measure the crankshaft and the bearings installed in the rods to confirm you have adequate oil clearance.
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greg brown
714 879 9072
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Semi-retired, as of Feb 1, 2023.
The days of free technical advice are over.
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Will still be in the shop, isolated and exclusively working on project cars, developmental work and products, engines and transmissions.
Have fun with your 928's people!
greg brown
714 879 9072
GregBBRD@aol.com
Semi-retired, as of Feb 1, 2023.
The days of free technical advice are over.
Free consultations will no longer be available.
Will still be in the shop, isolated and exclusively working on project cars, developmental work and products, engines and transmissions.
Have fun with your 928's people!
#50
Rennlist Member
Thread Starter
My plan is to simply replace the rod end bearings. I will have them measured. I pulled the thrust bearing and that will also be replaced along with the piston rings.
Rear side
front side
Rear side
front side
#51
Rennlist
Basic Site Sponsor
Basic Site Sponsor
That sounds like a great plan!
#52
Rennlist Member
Thread Starter
Thrust bearings have arrived.
#53
Rennlist Member
#54
Rennlist Member
Thread Starter
#56
Nordschleife Master
#59
Rennlist Member
Thread Starter
One more bearing to replace - note the scoring that goes all around the inside - the journal is perfect.