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phlogiston Samba Member
Joined: March 30, 2009 Posts: 336 Location: seattle
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Posted: Thu Apr 14, 2011 5:03 pm Post subject: picture of my camshaft--is this normal lobe wear? |
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more newbie questions here...
about to put my pistons back in, and i was peering around in the case first. noticed this wear pattern on all the camshaft lobes.
pulled out a few of the lifters... no scratches or pitting on them and their faces are flat when held against a straightedge. there are faint marks of concentric circles but they certainly cannot be felt.
is this a normal appearance for a used camshaft?? |
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phlogiston Samba Member
Joined: March 30, 2009 Posts: 336 Location: seattle
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Posted: Thu Apr 14, 2011 8:31 pm Post subject: |
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here's a shot taken through the lifter bore...
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ftp2leta Samba Member
Joined: October 11, 2004 Posts: 3271 Location: Montreal
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phlogiston Samba Member
Joined: March 30, 2009 Posts: 336 Location: seattle
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Posted: Thu Apr 14, 2011 8:47 pm Post subject: |
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ftp2leta wrote: |
I have seen worse. |
think those would go for another 50k miles? |
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thummmper Samba Member
Joined: November 25, 2009 Posts: 2015 Location: Meadow Valley, California Republic
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Posted: Thu Apr 14, 2011 9:54 pm Post subject: |
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with synthetic oil, yes. |
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phlogiston Samba Member
Joined: March 30, 2009 Posts: 336 Location: seattle
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Posted: Fri Apr 15, 2011 8:57 am Post subject: |
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thummmper wrote: |
with synthetic oil, yes. |
cool... that's what i was hoping to hear. i always run synthetic anyway (except i guess when i break in the new piston rings i just installed).
i'm surprised i didn't find more photos on here of camshafts in different states of wear. most of the ones i've seen in my life have been either brand new or destroyed.
what are the two metals that i'm seeing? is one a plating over the other that has worn off partially? or is it a deposit of some sort? |
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windnsea Samba Member
Joined: May 07, 2008 Posts: 424 Location: Pasadena, CA
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Posted: Fri Apr 15, 2011 9:27 am Post subject: |
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Camshaft wear? I'd worry more about camshaft bearings, especially the one nearest the flywheel. Did you see any flecks of metal in the oil that you last drained from the sump? |
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phlogiston Samba Member
Joined: March 30, 2009 Posts: 336 Location: seattle
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Posted: Fri Apr 15, 2011 11:06 am Post subject: |
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windnsea wrote: |
Camshaft wear? I'd worry more about camshaft bearings, especially the one nearest the flywheel. Did you see any flecks of metal in the oil that you last drained from the sump? |
nope. and i had chemical analysis done on the previous oil change and none of the wear metals were too high. think i'm gonna button this engine back up and save my money and patience for an engine with a turbo... |
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