blown everything [with pics] - Page 4 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 11-28-2005, 11:31 AM   #31
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Holy, thats some nasty!!!

Not one rod, but 2 rods? man, thats something!!
Was the car making any metallic banging or rapping noises before the engine let loose?

My oil pressure was indeed low, and was kinda making me a bit nervous before the engine blew on my LeSabre.
Yeah, I remember that very day, time, and place it blew, and it upset me greatly. The engine was just in pain, just low on power, and when I was going up an incline, I had to give it some throttle to down shift, and when it did, it just died with a clank!

I remember getting the car back, after being away from it for so long. I was just happy to see it again. It was at the school, and we pulled the engine. We took the timing cover off, and found the camshaft timing gear bolt had sheared off, like it snapped! Holy! Well, pulled the heads off, the shop teacher pushed the pistons with a hammer. One went right in with a clunk, and he said, ok, that isn't normal. Took the pan off, and found a picture exactly like yours open source guy. Bearing shot, rod in pieces, damaged the crank and block, toasting the engine.

OSG, find yourself a series 2 3800, and tranny. Stick em in, 200 HP at the wheels!!
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Old 11-28-2005, 04:13 PM   #32
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The problem with a s2 swap is the cost and time effort involved. Plus I want to rebuild my trans, and that isn't possible with a s2 swap [well maybe, but not worth it]. I'm going to keep with the LN3 for now.. but i'm not sure as to what else. I've got all winter to think about it.

And the metallic noises or knocking, none, nadda. The engine was running better than ever. So I had no idea. I'm not sure two rods blew on their own, but one went and probably took the other one out too. I'm still investigating the exact cause, because i think the piston went, not the rod. Becuase I have the circular thing the piston rotates on [where the rod connects to the piston ya know], and that'* all in one piece [and looks pretty good too]. So it may have been the piston failed, not the rod. But all the force and such in it caused it to just throw the rods. Either way it SUCKS.
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Old 11-28-2005, 04:18 PM   #33
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Have you yanked the valve covers yet? I believe that you dropped a valve, usually when I have seen damage like that and there was no knocking before hand, then a piston may have kissed a valve.. I have seen pistons come apart for that very reason... I'm interested to see if you have a rocker arm that may be loose or in a not so happy spot... And I mean loose as in no valve, or a bent valve?

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Old 11-28-2005, 07:21 PM   #34
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Nope, I have not pulled the valve covers yet. But, that'* worth checking out. Since it'* a lot of work to pull the rear cover, i'll pass on that one, but i'll pull the front cover [where the rod which separated from the piston was].
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Old 11-29-2005, 12:02 PM   #35
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Quote:
Originally Posted by opensourceguy
Nope, I have not pulled the valve covers yet. But, that'* worth checking out. Since it'* a lot of work to pull the rear cover, i'll pass on that one, but i'll pull the front cover [where the rod which separated from the piston was].
Take more Pics

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Old 11-29-2005, 12:04 PM   #36
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BTW...good job on the motor. Anything worth doing

I also agree with Don...probably valve
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