92Ty#1524
New member
I've been battling false knock with my recently built motor. Its so bad that I'm getting kr just from reving the engine and while driving under light throttle. Its retarding at least half of the spark under light throttle and all of it in wot. I went out on a limb and replaced the trans (RPM) and Raptor TC just to rule that out. Naturally, I'm assuming that since the motor was assembled by an NHRA pro, nothing could be wrong with the engine. Right? I'm having doubts.
The thought cossed my mind that the problem may be in the valvetrain because it was probably the biggest change in the engine that was made (2.02/1.60, pushrods, lifters, 412 cam, Crane 1.5 roller tip rockers, new studs) and it wasnt there before. Not to mention, I cant hear anything unusual with the naked ear. I inquired about how he set the lash. He set it to zero lash plus 1/8 turn " because it will allow you to take advantage of more lifter plunger travel at higher rpms..", I was told. I've searched the site for lash settings and in spite of the various recommendations made, nobody seems to have set thiers as such.
Its my feeling that mine need to be turned in a bit more. I've read anywhere from 1/4 turn to a full turn.
Any suggestions?
The thought cossed my mind that the problem may be in the valvetrain because it was probably the biggest change in the engine that was made (2.02/1.60, pushrods, lifters, 412 cam, Crane 1.5 roller tip rockers, new studs) and it wasnt there before. Not to mention, I cant hear anything unusual with the naked ear. I inquired about how he set the lash. He set it to zero lash plus 1/8 turn " because it will allow you to take advantage of more lifter plunger travel at higher rpms..", I was told. I've searched the site for lash settings and in spite of the various recommendations made, nobody seems to have set thiers as such.
Its my feeling that mine need to be turned in a bit more. I've read anywhere from 1/4 turn to a full turn.
Any suggestions?
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