Kind of like this in my 3B oil pan?
So, here's the somewhat condensed story. Last spring, I replaced all my cam bearings because of low oil pressure. Since I was into that far, I replaced the precups as well - they were all cracked, too. I had a factory Toyota MLS head gasket and put it all back together. At the time, it seemed like the head gasket fit a little tight around the liners. But, it was the first time I had done a head gasket at all, let alone on a sleeved engine. I torqued everything down, tried to turn it over by hand, and it wouldn't go. Turns out, Toyota gave me a head gasket for a non-sleeved 3B (I think out of a dyna bus or something). Torquing it down caused the liners to interfere with the piston. I sourced an aftermarket gasket and put it on. I looked at the liners at the time because I was pretty worried about them getting cracked. But, I didn't see anything. Put it all back together and it has run beautifully for the past 8 months.
So, then I decided to add a turbo. After a few drives and about a total of 1 hour of boosted engine time, I thought I hydrolocked it coming away from a stop light on my way to work. The engine stopped abruptly in the intersection. I was worried about the aftermarket headgasket, so I assumed that's what it was. I tried to restart, but the engine was pretty well locked up. I pushed it to the side of the road and after a few minutes of messing with it, the engine broke free and started. It didn't sound good, but it certainly didn't sound like catastrophic engine damage was happening. I limped it about a mile home and parked it. The next day, I pulled off the head and found this:
It turns out that the #2 liner had let loose and wedged itself between the piston and head. I found all 4 liners were broken off just below the surface of the block.
When everything let loose, it messed up the piston squirter, but more importantly it busted a chunk off the block at the base of the liner. You can kind of see it here opposite of the piston squirter.
And the piston and head:
So, does that now make this engine a boat anchor? I am assuming yes, but since it will have a sleeve over that section, I thought I would ask here. I plan on having this rig for awhile, so I was just going to rebuild it even though I could probably source a used engine for far cheaper than a rebuild. But after seeing the damage, it seems I might just be better off sourcing a used engine even with unknown maintenance history. What do y'all think?
Thanks!
So, here's the somewhat condensed story. Last spring, I replaced all my cam bearings because of low oil pressure. Since I was into that far, I replaced the precups as well - they were all cracked, too. I had a factory Toyota MLS head gasket and put it all back together. At the time, it seemed like the head gasket fit a little tight around the liners. But, it was the first time I had done a head gasket at all, let alone on a sleeved engine. I torqued everything down, tried to turn it over by hand, and it wouldn't go. Turns out, Toyota gave me a head gasket for a non-sleeved 3B (I think out of a dyna bus or something). Torquing it down caused the liners to interfere with the piston. I sourced an aftermarket gasket and put it on. I looked at the liners at the time because I was pretty worried about them getting cracked. But, I didn't see anything. Put it all back together and it has run beautifully for the past 8 months.
So, then I decided to add a turbo. After a few drives and about a total of 1 hour of boosted engine time, I thought I hydrolocked it coming away from a stop light on my way to work. The engine stopped abruptly in the intersection. I was worried about the aftermarket headgasket, so I assumed that's what it was. I tried to restart, but the engine was pretty well locked up. I pushed it to the side of the road and after a few minutes of messing with it, the engine broke free and started. It didn't sound good, but it certainly didn't sound like catastrophic engine damage was happening. I limped it about a mile home and parked it. The next day, I pulled off the head and found this:
It turns out that the #2 liner had let loose and wedged itself between the piston and head. I found all 4 liners were broken off just below the surface of the block.
When everything let loose, it messed up the piston squirter, but more importantly it busted a chunk off the block at the base of the liner. You can kind of see it here opposite of the piston squirter.
And the piston and head:
So, does that now make this engine a boat anchor? I am assuming yes, but since it will have a sleeve over that section, I thought I would ask here. I plan on having this rig for awhile, so I was just going to rebuild it even though I could probably source a used engine for far cheaper than a rebuild. But after seeing the damage, it seems I might just be better off sourcing a used engine even with unknown maintenance history. What do y'all think?
Thanks!
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