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little back ground, i bought a 99 GA with the standard LIM, it also had both heads blown and 5 bad lifters,
what i did: full valve job,12 new lifters, new updated intake gaskets, did the o ring for the oil pump drive, and new head bolts.
what happened: it was fine, drove it around town for a few days,tested it to 6k a couple times, it was smooth and quiet.
took it on a 200 road trip, just 65-70. went out to eat, all good. got up the next morning and a clatter, at first i thought it was a rod, then maybe a piston. so i drove it carefully home(200 miles). started hunting for an engine.
ok now up to yesterday, after another 150 miles driving it. last night i pulled the pan, then pulled each rod bearing, and look up each cyl bore. all rod bearing are perfect, not good, perfect. no scuffs on any cyl walls.
there was a fine grey metal sludge in the bottom of the pan. i cleaned everything up and put it back together. noise is still there(duh).
do you think i swiped a cam lobe?(oh,no loose rocker arms). what kind of timing chain do these engines use?
after i put it back together, i tested the engine to 6+ about........well alot.
the noise never changes, and the engine seems to have good power.
what i did: full valve job,12 new lifters, new updated intake gaskets, did the o ring for the oil pump drive, and new head bolts.
what happened: it was fine, drove it around town for a few days,tested it to 6k a couple times, it was smooth and quiet.
took it on a 200 road trip, just 65-70. went out to eat, all good. got up the next morning and a clatter, at first i thought it was a rod, then maybe a piston. so i drove it carefully home(200 miles). started hunting for an engine.
ok now up to yesterday, after another 150 miles driving it. last night i pulled the pan, then pulled each rod bearing, and look up each cyl bore. all rod bearing are perfect, not good, perfect. no scuffs on any cyl walls.
there was a fine grey metal sludge in the bottom of the pan. i cleaned everything up and put it back together. noise is still there(duh).
do you think i swiped a cam lobe?(oh,no loose rocker arms). what kind of timing chain do these engines use?
after i put it back together, i tested the engine to 6+ about........well alot.
the noise never changes, and the engine seems to have good power.
not sure what i'm going to do know, fix the one hole or do a complete swap. for the time and money, changing out the complete engine might not be a bad way to go.
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