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Hey guys,
very long story short I built an engine for my dakota. It's been running strong until last week it developed a ticking noise that varied with idle. I figured out the pushrods for slightly too long and were all broken. I remeasured and purchased correct length push rods, and changed the oil. I checked the oil filter and kept a sample of the oil and noticed it's got a ton of copper shavings in it, and it has a different knocking sound now. Nothing really bigger than a grain of sand, it makes the oil look metallic. Everything in the engine is brand new. The oil pressure has never faltered and has always been good. About 40psi at idle, up to 80 on load.
The knock persists if I remove the spark plug wire from the cylinder I hear it on while running. I think it stops when I take out the pushrods/rocker arms from the cylinder. The new knock is also RPM dependent (goes faster with RPMS). Although the engine still seems to run strong and have full power even with the knock. Speaking of which, the motor has 580 miles on it, and this is it's 4th oil change (had to change it a few times already due to other issues).
The machine shop that did my heads said they installed copper or brass valve guides in my heads as well. Could it be these? The metal flakes I found are NOT magnetic.
Could it just be that this is normal for break in wear? This is my first time dealing with something like this. I will post pics ASAP
Please let me know what you guys think,
Karl G.
very long story short I built an engine for my dakota. It's been running strong until last week it developed a ticking noise that varied with idle. I figured out the pushrods for slightly too long and were all broken. I remeasured and purchased correct length push rods, and changed the oil. I checked the oil filter and kept a sample of the oil and noticed it's got a ton of copper shavings in it, and it has a different knocking sound now. Nothing really bigger than a grain of sand, it makes the oil look metallic. Everything in the engine is brand new. The oil pressure has never faltered and has always been good. About 40psi at idle, up to 80 on load.
The knock persists if I remove the spark plug wire from the cylinder I hear it on while running. I think it stops when I take out the pushrods/rocker arms from the cylinder. The new knock is also RPM dependent (goes faster with RPMS). Although the engine still seems to run strong and have full power even with the knock. Speaking of which, the motor has 580 miles on it, and this is it's 4th oil change (had to change it a few times already due to other issues).
The machine shop that did my heads said they installed copper or brass valve guides in my heads as well. Could it be these? The metal flakes I found are NOT magnetic.
Could it just be that this is normal for break in wear? This is my first time dealing with something like this. I will post pics ASAP
Please let me know what you guys think,
Karl G.
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