flat roller tip
Le Mans Master
Joined: Jan 2002
Posts: 8,913
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Re: flat roller tip (hotbrakesracing)
Is the flat spot on the center of the roller surface or favor one of the sides.
If it is on the outer edge, the rocker arm may not be interfacing square with the top of the valve stem.
Did you take the rocker arm off and inspect the movement ability of the roller assembly?
They could be lashed to tight, but I think that would cause a list of other problems as well.
Just food for thought.
Mark
If it is on the outer edge, the rocker arm may not be interfacing square with the top of the valve stem.
Did you take the rocker arm off and inspect the movement ability of the roller assembly?
They could be lashed to tight, but I think that would cause a list of other problems as well.
Just food for thought.
Mark
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Joined: Aug 2002
Posts: 63
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From: des moines iowa
Re: flat roller tip (88-406)
i am using a solid lifter cam and before i took the arm off i had .030 of an inch clearance..it is supposed to be .022 inch..the stud was tight..the flat spots on the roller tip was to one side..where the stud comes thru the rocker slot there is a groove wore in the stud..the push rod is just slighty bent..i want change to full roller rockers..i am trying to figure out what i have to do to make this change and weather i should stay with 1.6 or go to 1.5 ratio??? i am using standard screw in studs with guide plates now.. :confused:
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Joined: Aug 2002
Posts: 63
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From: des moines iowa
Re: flat roller tip (88-406)
well i think so!! this is the only one that did it after 2500 miles..i have autox and hard miles on it..cam is 248 degrees at .525 lift..i am wondering if i should go to 1.5 ratio..these rockers seem a whole bunch sloppy even set at .022 thanks
Burning Brakes
Joined: Oct 2001
Posts: 1,033
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From: Tracy California
St. Jude Donor '05
Re: flat roller tip (hotbrakesracing)
Good luck with this, maybe you can check everything out very carefully with that one valve "guide clearance, coil bind, pushrod clearance, rocker clearance, inspect that lobe etc...you may be surprised.
KM
KM
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