Looks like I'm pulling the engine again. CONFIRMED, engine dead
#34
Senior Member
Certified GM nut
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.
#35
Retired Senior Admin
Expert Gearhead
Thread Starter
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Likes: 0
Received 28 Likes
on
24 Posts
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.
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.
#38
Retired Senior Admin
Expert Gearhead
Thread Starter
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Likes: 0
Received 28 Likes
on
24 Posts
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.
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.
#39
Senior Member
True Car Nut
Join Date: Jan 2009
Location: Dover, NH
Posts: 7,122
Likes: 0
Received 0 Likes
on
0 Posts