Engine rebuild, lifter noise
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Engine rebuild, lifter noise
I just rebuilt my 302 in my 96 F150 and I installed a larger cam while it was apart. I used comp xtreme energy cam part # 35-512-8 I also used all the recommended lifters, push rods, springs, timing set, etc. through comp. started it up and performed the break in on it and have driven it some since then. I still have some lifter noise and I am wondering if any one else has experienced this, is it normal? I was told with the larger cam it is normal for the lifters to make noise. I just want to know other people's thoughts/inputs about this.
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Yeah good oil pressure, also there is an exhaust leak but I can differentiate the lifter noise from the exhaust leak
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Is it heat/cold related?
Can you pull the valve cover & run it to isolate the particular one?
Are you using new rockers or the originals, stock or aftermarket?
Can you pull the valve cover & run it to isolate the particular one?
Are you using new rockers or the originals, stock or aftermarket?
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Both sides, hot and cold, stock rockers
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Both sides!? Like you have more than one tapping?
What heads; and were they milled? How much? I ask because of pushrod length.
Too much spring pressure can collapse a lifter, but they'd have to be springs for duration in the 235+ .600 lift range.
You could have one bad lifter out of the box, two? Possible but unlikely. More? Verrrry doubtful.
If nothing else is glaring, oil pressure is the likely culprit.
What heads; and were they milled? How much? I ask because of pushrod length.
Too much spring pressure can collapse a lifter, but they'd have to be springs for duration in the 235+ .600 lift range.
You could have one bad lifter out of the box, two? Possible but unlikely. More? Verrrry doubtful.
If nothing else is glaring, oil pressure is the likely culprit.
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From: Central Mississippi
^^^ What he said about push rod length.
I'd pull the upper intake, both valve covers, carefully check & mark distributor, pull it, then plug in a prelube drive shaft to the oil pump & run the crap out of it while watching what & how much come out of the push rods onto the rockers.
If you reused the rockers, did you keep them with their fulcrums? They are wear mated & mixing them up can make for "ticks".
I'd pull the upper intake, both valve covers, carefully check & mark distributor, pull it, then plug in a prelube drive shaft to the oil pump & run the crap out of it while watching what & how much come out of the push rods onto the rockers.
If you reused the rockers, did you keep them with their fulcrums? They are wear mated & mixing them up can make for "ticks".
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I went off the gauge in the cluster it's in the normal range. I can't hear it driving it down the road but it's hard to hear the lifter noise with the vehicle off idle due to the exhaust leak.
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