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back at the shop again

10/28/2021

 
So the engine is now back at the machine shop again. We'll see what it needs soon enough.

In the mean time, i decided to open up the Kaase oil pump.  As expected, its ruined as well.  All sorts of scoring on the gears, and the aluminum housing as well
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So add that to the list of items that will be getting replaced as well.

i guess any job worth doing...

10/22/2021

 
So the engine came out and went back onto the stand wednesday.  Spent thursday & friday disassembling it to see just what went wrong.  Heres what i found.

I had pulled the oil drain plug the night before, so when i got home from work i could immediately drop the pan.  This is what i found:
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​So we're not off to a good start.  So i moved to the top end to remove the heads.  I bought a cheap ($10) parts organizer from Harbor Freight and used it to organize the rockers + hardware, lifters and pushrods so i could keep track of where they came from
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I found 3 pushrods with chips in the top.  Coincidentally all exhaust valves
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​Heads off:
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​I can see slight scoring in the bores:
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​Rolled over, lets inspect the bottom end:
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​If its not clear in the pic, the oil pickup is absolutely covered in metal, to the point of it seeming like it was dipped in nevr-seize
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​Pulled the #2 crank bearing cap, and well....
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​Scored to all hell, including the crank journal.
​Pulled a rod bearing, and same thing:
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​This is typical of all rod bearings:
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​Crank is out.  All bearings wiped, all journals scored.  I hope i can salvage the crank.
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​Starting pulling lifters.  #5 intake lifter is wrecked:
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​#7 intake lifter also damaged, altho not nearly as bad:
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​Cam lobe wiped out:
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​All piston skirts showing wear:
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​All cylinder bores scored:
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​And the bare block, waiting for its return trip to the machine shop next week:
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​You know what they say....any job worth doing, is worth doing twice.

that was short-lived

10/21/2021

 
466 on its way back out:
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​Slinging this thing by myself, without removing the hood, wasnt easy.
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​So here we are again, back on the stand.  Now to see what went wrong.
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no news is good news

10/6/2021

 
​So i have two oil pressure sensors in the rear port on the block.  The OEM sending unit, and the aftermarket one from NVU.  So i removed the OEM one and hooked up a mechanical gauge there.  Pulled the distributor and ran the oil pump via the driveshaft, and i see ~40 PSI on both the mechanical & electrical gauge, so that confirms i have oil pressure when cold, and confirms my electrical gauge works properly.  Drained the oil, pulled the filter, cut it open, and i dont see any bearing material.  Brought the filter over to the machine shop since hes only about 5 minutes away and he agrees, no bearing material in the filter.

Today i changed the oil out for Rotella 15W40 (this time i put in 7 quarts instead of 6), ran the oil pump via the driveshaft and got ~48psi, which id expect from the heavier oil.  Put the engine back together and fired it up.  Ran it at 2k rpms for 4 minutes, and in that time it dropped to about 5-6psi so i shut it down.  Waited 5 minutes, fired it back up and no oil pressure at idle.  Shut it off, waited another 10 minutes, and fired it up again.  Barely any increase in oil pressure.  So i dont think its a problem with oil draining back down to the pan.

At this point i cant see anything else i can do, without pulling the motor back out.

when it rains it pours

10/3/2021

 
​I have been hesitant to update this, because reasons.

​It runs.
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It took me 4 weeks to get to this point. I have been working on the engine 20+ hours a week, every week since my last update a month ago. Timing cover came back off, bought a different set of fuel injectors, and a second wideband O2 sensor as i probably ruined mine. Passenger header has been off 3 times, still leaks. Struggled with the tune. Still not right, but im going to have to replace the headers to get it right since i cant get the one to stop leaking.
​The engine is still not 'broken in'. I am dropping to about 5-6 PSI on oil pressure (at 2k rpms) by the time the thermostat opens. Idle might be close to zero. I dont know whats wrong. Im going to try to get a mechanical gauge on it tomorrow to make sure. I expect the motor is going to be coming back out. So the frustration level is high.

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