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Author Topic:   losing cam,s
racinrobb2003
Dirt Roller

Total posts: 12
posted January 21, 2004 09:34 PM  
I have a 2300 ford and have lost 3 cam's.They have to remain stock .420 lift with 75# at the seat and 210# open and is a hyd. non roller follower.Can any one help.this head has new followers and 3 new cam's. never used parts.

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racinrobb

daddyrich
Dirt Full Roller

Total posts: 33
posted January 22, 2004 06:32 AM  
did you put new followers each time you swapped cams. the cam and followers are meant to work harden togethor. if you change one make sure you change the other.
are you running anything "underneath the lifters. i've seen some guys with dimes and stuff underneath. it never works. i dont know what they are trying to accomplish by that. but we see it a lot with the same problems you're having. also double check that you have the stock height lifters in there. they do come in different heights.
it could be a problem with excessive lash if they are too tall. also make sure you use the lube on the lobes when you install and follow the instructions for the break in period. you have to give it time to break in. you cant just install it and run the **** out of it. try this and let me know if this helps. i would also make sure you have the right springs. dont assume anything - double check or even replace them if you dont know. stock springs are fine for the lift your running.

bigcityracer
Dirt Freak

Total posts: 431
posted January 22, 2004 06:15 PM  
The only cams I tore up were due to too heavy of valve springs. No other reason. Purchase cam/lifters and springs and your problems will end. good luck

racerman707
Dirt Freak

Total posts: 374
posted February 08, 2004 02:36 PM  
Hello robb! The main reason for ruined cams is the geometry! Your spring pressures are very close to what a hydraulic head needs.
Use a solid lifter at zero lash to set valve lift then squeeze all the oil out of the lifter you plan on using and put 40 to 50 thousandths under rocker.I lost 3 cams in 3 weeks not checking geometry but not since I figured it out.



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