Folks:
Finally got some free time to examine my hot oil pressure issue today, and it appears as if # 2 and # 3 Main Bearings got "wacked". Clevite-77's are shown in pics below.
Crankshaft looked incredibly nice - but the bearings definately took the hit.
Mains # 1 and # 4 were in very nice shape, as were ALL of the rod bearings - all 6 looked incredibly nice.
The sides of the Thrust Bearing displayed no visible signs of converter issues.
Engine has steel caps all the way across, and does an incredible amount of "sitting" in my garage.
Oil pump consists of GM front cover w/ 0.002" gear end play, stock length gears, glassbeaded w/ idler gear drilled w/ one 1/8" hole, KB Booster Plate, Bypass Blocked, "Biggie" Oil Filter Adapter w/ AC # PF-24 filter & Oil is Pennzoil 30wt + sometimes Prolong.
I slid some new bearings in today on both the mains & rods (FM's on the Mains & Clevite's on the Rods). Also went with an external oil cooler JIC after this episode.
Gonna prime the oil pump and see how it goes.
Regardless - I got another 109 Block in the works now - doing things a little differently this time.
My neighbor - whom builds some pretty BA Corvettes & has been a GM guy for ~ 20 years said the lower bearings definately took the "hit" and said they looked like they went through some continuous "dry" start-up conditions.
His analysis is true, as when I would start the engine - after extended periods of sitting - I could hear - what I thought were the rods "barking" for a few seconds until the O.P. Gauge came up.
Wondering if blocking the bypass could have something to do with this?
I have also seen the AC Delco filters appearingly "buckle" inside, yet, never come apart or blow out the seal and dump it's load - like I heard the small filters do.
Car will probably continue to sit in my garage for extended periods. Not excited about pulling the cam sensor & cranking the oil pump before starting each time. Is there a better way? Crank w/ ECM line disconnected until pressure builds?
Suggestions, Comments, Analysis - Thanks all.
Regards.
Edward
Finally got some free time to examine my hot oil pressure issue today, and it appears as if # 2 and # 3 Main Bearings got "wacked". Clevite-77's are shown in pics below.
Crankshaft looked incredibly nice - but the bearings definately took the hit.
Mains # 1 and # 4 were in very nice shape, as were ALL of the rod bearings - all 6 looked incredibly nice.
The sides of the Thrust Bearing displayed no visible signs of converter issues.
Engine has steel caps all the way across, and does an incredible amount of "sitting" in my garage.
Oil pump consists of GM front cover w/ 0.002" gear end play, stock length gears, glassbeaded w/ idler gear drilled w/ one 1/8" hole, KB Booster Plate, Bypass Blocked, "Biggie" Oil Filter Adapter w/ AC # PF-24 filter & Oil is Pennzoil 30wt + sometimes Prolong.
I slid some new bearings in today on both the mains & rods (FM's on the Mains & Clevite's on the Rods). Also went with an external oil cooler JIC after this episode.
Gonna prime the oil pump and see how it goes.
Regardless - I got another 109 Block in the works now - doing things a little differently this time.
My neighbor - whom builds some pretty BA Corvettes & has been a GM guy for ~ 20 years said the lower bearings definately took the "hit" and said they looked like they went through some continuous "dry" start-up conditions.
His analysis is true, as when I would start the engine - after extended periods of sitting - I could hear - what I thought were the rods "barking" for a few seconds until the O.P. Gauge came up.
Wondering if blocking the bypass could have something to do with this?
I have also seen the AC Delco filters appearingly "buckle" inside, yet, never come apart or blow out the seal and dump it's load - like I heard the small filters do.
Car will probably continue to sit in my garage for extended periods. Not excited about pulling the cam sensor & cranking the oil pump before starting each time. Is there a better way? Crank w/ ECM line disconnected until pressure builds?
Suggestions, Comments, Analysis - Thanks all.
Regards.
Edward
