Engine & Internal Cams, heads, valvetrain, rotating assemblies. Chat about beefing up your insides here.

Cam beak in

Old Oct 22, 2007 | 10:54 AM
  #1  
numskull223's Avatar
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Default Cam beak in

I have never messed with a roller cam before, So I was wondering what is the break in procedure for a roller cam? thanks Jeff
 
Old Oct 22, 2007 | 09:19 PM
  #2  
z28pete's Avatar
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Default RE: Cam beak in

Roller cams do not need the extended break in that flat lifter cams do, and you can even reuse the old lifters in a pinch. Just make sure that the lifters are in good condition especially the rollers, as a bad lifter or seized roller can wipe out the cam. Put on a good coating of assembly lube on cam and the rest of the valve train, adjust the valve clearance and you are set hit the road.
 
Old Oct 22, 2007 | 11:08 PM
  #3  
bowtieguy's Avatar
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Default RE: Cam beak in

run the engine about 25 minutes at 2500rpm's,dump the oil and filter,install oil and filter.you will see some metal in the oil,dont get alarmed this is normal,look for heavier,bigger pieces.might not hurt to pull the valve covers and look for metal in the bottom of the head where the oil drains back to the oil pan.alot of people do there break-ins different,i've done it different.i think it comes down to who your engine builder is.some say 25mins@2500rpm's and some say 30mins@3000rpm's
 
Old Oct 23, 2007 | 11:25 AM
  #4  
numskull223's Avatar
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Default RE: Cam beak in

Thanks guys, One more thing. My cam card doesn't show what the clearence should be. I've heard .025.
iusally adjust flat tappet by feel.
 


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