Metal in engine?
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From: Pittsburgh
Car: 1987 firebird
Engine: 1995 lt1 383
Transmission: 4l60e
Axle/Gears: moser 9" with 3.70
Metal in engine?
This is probably posted in the wrong place but I want a racers point of view.
I just found metal in my motor, right when I went to put on the intake and finish this years projects. It was a ball of chewed up sheet metal (at least the engine builders said it is not a bearing, piston, crank, block, that it is stamped steel). It was about the size of a single bearing, and it was on the front passenger side of the lifter valley next to the lifter.
So I drained the oil, which was very clean and I went through it with a magnet and found very little. Next I cut the oil filter open and found very very fine metalic particals but I would have thought nothing of it with out the piece found in the valley.
I pulled the metal valve covers to see if a rocker was hitting but both were clean and the springs look ok, even the metal piece they sit on because of aluminum heads.
So I pulled the timing cover, which is a pain in the but on a LT1 and found a timing chain with about 5/8" of slack in it and a smaller piece of that same chewed up metal inbetween the flap on my timing cover to crank seal. And I found that the aluminum timing cover needs clearanced alittle from the timing chain, which would explain the very fine particals found in the filter. What the hell,This motor is completly forged and has less then 500 miles on it.
So now I am going to lift the motor to pull the piece of **** Morroso 7 qt pan that leaked from day one in a weld and see if my strocker crank is hitting it.
What do you guys think? This sucks my race year starts in less then two months.
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Sorry wrong section
I just found metal in my motor, right when I went to put on the intake and finish this years projects. It was a ball of chewed up sheet metal (at least the engine builders said it is not a bearing, piston, crank, block, that it is stamped steel). It was about the size of a single bearing, and it was on the front passenger side of the lifter valley next to the lifter.
So I drained the oil, which was very clean and I went through it with a magnet and found very little. Next I cut the oil filter open and found very very fine metalic particals but I would have thought nothing of it with out the piece found in the valley.
I pulled the metal valve covers to see if a rocker was hitting but both were clean and the springs look ok, even the metal piece they sit on because of aluminum heads.
So I pulled the timing cover, which is a pain in the but on a LT1 and found a timing chain with about 5/8" of slack in it and a smaller piece of that same chewed up metal inbetween the flap on my timing cover to crank seal. And I found that the aluminum timing cover needs clearanced alittle from the timing chain, which would explain the very fine particals found in the filter. What the hell,This motor is completly forged and has less then 500 miles on it.
So now I am going to lift the motor to pull the piece of **** Morroso 7 qt pan that leaked from day one in a weld and see if my strocker crank is hitting it.
What do you guys think? This sucks my race year starts in less then two months.
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Sorry wrong section
Last edited by drperformance; Mar 12, 2008 at 11:34 AM. Reason: Automerged Doublepost
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Joined: Sep 2007
Posts: 26
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From: kiln, ms
Car: 91rs
Engine: 6.0
Transmission: 4l60e/3600 vig stall
Axle/Gears: 3.73 9 bolt
Re: Metal in engine?
i would pull the motor and check things out. 5/8 sounds like a lot of slack in a timing chain. i had to clearance the oil pan for my stroker crank, also if it has a windage tray or crank scraper that could have also have gotten munched.
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