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Author Topic:   Collapsed lifter?
intimidtr3
Dirt Full Roller

Total posts: 32
posted March 07, 2003 06:56 AM
i need to know if it is possible for new lifters to collapse?When I put cam and lifters in I adjusted the valves down to tight(way to tight)and now it runs good,but I just changed the push rods(some bent)and it still makes the same noise coming from the intake head area.The engine runs awesome except for the noise.It won't go away and gets louder on acceleration.I was told if I had a collapsed lifter it would miss.It doesn't even hesitate.Any input would be very appreciated.

dirtracer7
Dirt Maniac

Total posts: 106
posted March 07, 2003 07:49 AM
I don't think I'd be driving it around with noise .Is it a new cam? what is the valve clearence? I'd be trying to figure out why the pushrods bent myself.

Flatlander
Dirt Freak

Total posts: 310
posted March 07, 2003 02:29 PM
Sounds like you may have wiped a lobe I would do as dirtracer says find out why is there binding somwhere? do you use guideplates and stud girdles?

Slam_Shifter
Dirt Full Roller

Total posts: 53
posted March 07, 2003 05:51 PM
If you over tightened the lash to the point where it bent push rods I would say the odds are good you may have damaged something else I.E. cam or lifters. I would pop the valve covers and intake off and roll the motor over by hand to see what was happening from the rocker arms to the lifters. Did you replace all the pushrods? If not you may still have a bent one in there. Damage should be contained to rockers, rocker studs, push rods, lifters, and cam. I would have someone turn it by hand while I watched each lobe of the cam work from lifter to rocker. It is possible you killed a lifter or even killed the cam depending on how long you let it run. If you were running it at break in for the 2000 rpm for 20 minutes deal I would definitly check cam lobes and lifters. Just some things to look at. You're sure it was a valve lash problem and not the valves touching the pistons or springs binding from too much lift.

budman14
Dirt Roller

Total posts: 11
posted March 07, 2003 08:05 PM
what a cowencidence i let my uncle adjust my valves 1 time lol just 1 time and i had the same problem after a few minutes runing well it not only bent my pushrods it busted the center out of the lifter like the info posted above i would check ur valve train really good.

intimidtr3
Dirt Full Roller

Total posts: 32
posted March 08, 2003 02:54 PM
I never ran it with the valves to tight,it wouldn't start up,so I readjusted then ran it.I shouldn't have to much lift since it is an RV cam(204-210).I haven't pulled intake yet,Going to in a few minutes,if it is a lifter can I just replace the bad 1(or 2 whatever it may be) and put it back together.I only have about 20 miles on it since I put it all together.Really appreciate the input.

Flatlander
Dirt Freak

Total posts: 310
posted March 08, 2003 09:04 PM
yeah I would clean the inside of tha valley out clean the heads good for debris wipe pour a little fuel and scrub then drain pan take tha pan off and give it agoodcleaningwatchfor metal fibers little slivers or just chips of meetal some is normal just really get it clean ck all pushrods make sure they';re straight and not stopped up with filings then put her back together and give it i rip

30rulz
Dirt Roller

Total posts: 24
posted March 08, 2003 11:46 PM
take a good lifter and cram it full of washers and make it a solid lifter. use a good pushrod and rocker arm and go from one lifter hole at a time and measure the lift of the cam to make sure there the same. if the valves were to tight it shouldn,t start

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