Bad rebuild
Senior Member
Joined: Jun 2003
Posts: 917
From: Grand Prairie, TX
Originally Posted by BOTTLEFED' post='871732' date='May 13 2007, 11:07 PM
BTW, the outer seal just pushed up out of the groove during disassembly
Yep that almost always happens on disassembly.
B
Junior Member
Joined: Oct 2006
Posts: 14
Originally Posted by Jeff20B' post='871751' date='May 14 2007, 11:45 AM
That's because they used vaseline, which makes the coolant seals grow. I personally use the Mike method with wheel bearing grease. Just enough to hold them in the grooves.
I defer to heretic's superior eyesight
Does anyone know what the outer layer is in the multilayer OEM seals? or why it might be expand due to exposure to vaseline?
Senior Member
Joined: May 2002
Posts: 22,465
From: California
Originally Posted by BOTTLEFED' post='871876' date='May 15 2007, 08:42 AM
Another odd thing I found was that the oil pump chain was worn out - I measured .5" of total deflection.
Isn't that a a normally replaced part in a full rebuild?
i think most people dont. ive never heard of a failure either.
chain is cheap though $25..
Senior Member
Joined: Oct 2001
Posts: 1,675
From: Clifton, NJ
Originally Posted by j9fd3s' post='871989' date='May 16 2007, 02:47 PM
i think most people dont. ive never heard of a failure either.
chain is cheap though $25..
Looks like a careless rebuild to me. The damage in the iron coolant o-ring groove was probably overlooked and the motor put together that way. The silicone is also careless and sloppy. Who did the rebuild?
Thread Starter
Member
Joined: Apr 2003
Posts: 39
From: Pocatello, ID
I shouldn't say who built the engine right now - we are getting this straightened out
The builder claims that this all happened after the rebuild. He says that the oring failure occurred because too much water was run in the coolant mixture and rusted the passages in the irons - in 3k mi. after rebuild. He says that he never uses black silicone so the motor must have been opened up after he rebuilt it. And he says the chain was not replaced because the motor was a reman that they bought(new?) and rebuilt.
The builder claims that this all happened after the rebuild. He says that the oring failure occurred because too much water was run in the coolant mixture and rusted the passages in the irons - in 3k mi. after rebuild. He says that he never uses black silicone so the motor must have been opened up after he rebuilt it. And he says the chain was not replaced because the motor was a reman that they bought(new?) and rebuilt.
Senior Member
Joined: Oct 2001
Posts: 1,675
From: Clifton, NJ
Originally Posted by BOTTLEFED' post='872117' date='May 17 2007, 05:09 AM
I shouldn't say who built the engine right now - we are getting this straightened out
The builder claims that this all happened after the rebuild. He says that the oring failure occurred because too much water was run in the coolant mixture and rusted the passages in the irons - in 3k mi. after rebuild. He says that he never uses black silicone so the motor must have been opened up after he rebuilt it. And he says the chain was not replaced because the motor was a reman that they bought(new?) and rebuilt.
Too much water? I have run 20% coolant ant 80% distilled water in the summer with no excessive corrosion for years. I would believe that id you never chnaged the coolant. That coolant o-ring almost looks like it got pinched during assembly.
