Looks like I'm pulling the engine again. CONFIRMED, engine dead - Page 4 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 04-12-2011, 10:48 AM   #31
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You could do a cheap junkyard N/A 3800 topswap like I did.
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Old 04-12-2011, 10:49 AM   #32
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All options are still on the table. Waiting on a price of a short block right now.
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Old 04-12-2011, 03:44 PM   #33
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Right now, only 3 bolts hold the engine in place. After I pick my son up from school, I'll get the lift on it, and out it comes.
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Old 04-12-2011, 05:00 PM   #34
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Quote:
Originally Posted by BillBoost37 View Post
ps. by the time I got to motor #3 I had a routine of cheap walmart oil for two changes in the first 2-5 minutes of start up and then another in about 100 miles to swap back to synthetic. The next change was maybe at 500 miles. Tell me I wasn't spooked or worried...
It'* true. He made me do it for my cam install. Fortunately, I didn't have any glitter in the oil. Photobucket is down for maintenance, so I can't see if yours was shiny or not.

If you're good at tuning, which you advertise that you are, give your supercharger a break and think about an L36 bottom end. You know the benefits, and chances are it'* cheaper than an L67 bottom.
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Old 04-12-2011, 06:16 PM   #35
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Actually, I'm talking to someone about a rebuilt L37 short block. I then need to pulley up .3"

I do believe I have found the cause. Once photobucket gets back up I can upload them. I did a run out test on my flex plate. Speck has a 3 thousandths max. I found 11 thousandths in round, and 30 thousandths in warp. That'* 10x out of spec. I imagine I hit just that right RPM and it'* all over. I'll know for sure after I flip the engine and pull the mains. But after doing a lot of reading, main bearings sound a lot like rod bearings. My last engine I pulled all the pistons and inspected the bearings, but never pulled the mains. Now I wish I had.
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Old 04-12-2011, 06:40 PM   #36
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I like the 'CONFIRMED'
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Old 04-12-2011, 06:46 PM   #37
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Once I pull the mains I'll have pictures.
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Old 04-12-2011, 07:51 PM   #38
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OK, got some pictures now.

Engine ready to come out, again.


Say ahhhhh.


Time to test the flex plate.


Set the dial.


This was the high said, another part was about 8 or 9 thousandths below the zero. had a total warp of about 30 thousandths. Max spec is 3


Now to check center.


Total run out was about 10 thousandths.


Once again, a big hole where a engine should be.


Well, guess I'm ripping this apart again.
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Old 04-12-2011, 08:05 PM   #39
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a engine with nearly 200k on it may have just not been up to the challenge.

was fine in my car and had plenty of life left in her! god i miss my car!!!
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Old 04-12-2011, 09:12 PM   #40
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I would have never guessed the flex plate was the killer... is this the same flex plate from the last engine?
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bad bearing, engine knock, knock, knocking, metal in oil, rod bearing, tapping

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