Could backfiring cause this?
#42
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I agree with Mike, looks like heat checking to me, a good std std GM fordged crank may be in order, and Randy we knew u pulled the bolt first.
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#43
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just fyi,gm bought the gen 5&6 cranks from scat.
#44
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couple of things...need to have a machine shop ck the crank for size/round and the rods as well, I have run into scat and other cranks that say factory balanced be totally crap and have a tuff time getting them to balance at all, can't imagine what they would be like run as is...backfiring had nothing to do with the bearing/vibration..good luck Rob
#45
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So a Kellog stamped crank is from Scat ?
#46
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#47
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Yes, Im aware of that, but it didnt answer my question
Last edited by F-2 Speedy; 07-31-2014 at 08:49 AM.
#49
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[QUOTE=Randy Nielsen;4160844 The crank was replaced & short block built 5 yrs ago then stored until last yr then everything disassembled cleaned up & reassembled, dyno'd now this.[/QUOTE]
I must have missed this.from the markings on the bearings,this crank/bearing clearance is a miss.
do you remember measuring this crank and adjusting bearing clearance.
I must have missed this.from the markings on the bearings,this crank/bearing clearance is a miss.
do you remember measuring this crank and adjusting bearing clearance.
#50
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