How to choose a camshaft

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(Summary)
(Things that will "frag" a camshaft and lifters)
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1. Failure to remove all rust-preventative from cam and lifters with solvent once you get them home.
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*1. Failure to remove all rust-preventative from cam and lifters with solvent once you get them home.
2. Failure to wash the cam and lifters with hot soapy water to remove the remainder of rust-preventative not removed with solvent.  
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*2. Failure to wash the cam and lifters with hot soapy water to remove the remainder of rust-preventative not removed with solvent.  
3. Failure to properly massage an extreme pressure lubricant such as Molybdenum Disulfide into the pores of the metal on all lobes and lifter faces.  
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*3. Failure to properly massage an extreme pressure lubricant such as Molybdenum Disulfide into the pores of the metal on all lobes and lifter faces.  
4. Failure to use an extreme pressure lubricant additive to the engine oil for camshaft break-in.  
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*4. Failure to use an extreme pressure lubricant additive to the engine oil for camshaft break-in.  
5. Failure to use the proper valve springs for cam break-in. You can't use the 350 lb over-the-nose springs that you'll eventually use in the motor and expect the cam to live.
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*5. Failure to use the proper valve springs for cam break-in. You can't use the 350 lb over-the-nose springs that you'll eventually use in the motor and expect the cam to live.
6. Failure to check for valve spring coil bind.
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*6. Failure to check for valve spring coil bind.
7. Failure to check for retainer to valve guide clearance.
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*7. Failure to check for retainer to valve guide clearance.
8. Failure to check for binding at the rocker/stud interface.  
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*8. Failure to check for binding at the rocker/stud interface.  
9. Failure to check for piston/valve clearance.
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*9. Failure to check for piston/valve clearance.
10. Failure to run the motor at high rpms for the first 35-40 minutes of its life. NO IDLING. NO IDLING. NO IDLING.
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*10. Failure to run the motor at high rpms (2500 or higher, alternating 1000 rpm's up and/or down) for the first 35-40 minutes of its life. NO IDLING. NO IDLING. NO IDLING.
11. Failure to clearance lifters in their bores so that they spin freely.
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*11. Failure to clearance lifters in their bores so that they spin freely.
12. Failure to initially adjust the valves properly.  
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*12. Failure to initially adjust the valves properly.  
13. Failure to inspect the distributor drive gear for wear. Too much wear can allow the cam to walk in its cam bore and contact an adjacent lifter.
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*13. Failure to inspect the distributor drive gear for wear. Too much wear can allow the cam to walk in its cam bore and contact an adjacent lifter.
  
 
== Summary ==
 
== Summary ==

Revision as of 17:35, 5 April 2009

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