Quote:
Originally Posted by GNocide
..but keep using diesel and wiping flat tappet cams and telling us its all the same and ill try to act surprised.
switching cams to roller does take away a major friction area of metal to metal contact
thats not the only one in the engine though
your leaving out
wrist pins, our tight tolerance soft bearings you can easily scratch - push rods/rocker arms-
ill bet those are right behind your camshaft as far as wear-
arrogence no-
i just actually understand the process and how it works in a motor and what wears out
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You're showing your ignorance again......the roller lifter is still made of metal, and there is metal to metal contact. The roller rolls, minimizing friction.
The flat tappet lifter SPINS based on the lobe taper, and that spinning action keeps the lifter from eating into the cam surface. Pressure inhibitors such as ZDDP are especially critical during cam break-in, so the cam can mate to the lifters and form proper wear patterns. I've never heard of bearing failure due to lack of ZDDP/EOS...
...and on what planet do push rods and rocker arms wear out due to lack of ZDDP?
BTW, I went roller long ago, and enjoy every moment of it.
Sounds like you've never been in an engine.....
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Proud owner of a teeny lil' ol' v-6 that has a nasty tendency to STOMP on V-8s!!
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Last edited by SouthernCal GN : February 18th, 2008 at 04:44 PM.
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