I've searched several threads but looking for any new info.
I just broke an Atlanta Crankshaft at less than 10k on a totally new\machined short block.
I am putting trying to re-use the crank that came out originally but it spun the all too familiar #2 and grooved the journal.
So... Any thoughts on these?
1) To make the crank as bullet proof as possible what machine work and prevention could be taken.
Obviously restricting any turn to one pass, polish where possible.
I've read about NITRIDE coating on crankshafts while flying planes, but don't know much about it other than it is praised to lengthen the over-all life of the crank.
2) Magnaflux, if so how high can you go on the amperage? I've never performed it but have been told the higher you go, the more definitive the test will be, but too high and the steel is weakened.
3) Balancing or chamfering the oil passages?
4) I have a new HB but it's a stock one in with less than 12k on it.
5) Sacrificing a small gerbil, or anything else no matter what.
I didn't have any detonation and running perfect, snapped at 1800 rpm, 3rd gear, 35 mph no load.
I just don't see how it busted smooth after rod journal 1, and trying to prevent having to do it again.
I have a few mods with the biggest adder being a 75mm BKK TB.
I'm not looking to ever push more than 275-300 if that much, but want it to last longer than before
Thanks
I just broke an Atlanta Crankshaft at less than 10k on a totally new\machined short block.
I am putting trying to re-use the crank that came out originally but it spun the all too familiar #2 and grooved the journal.
So... Any thoughts on these?
1) To make the crank as bullet proof as possible what machine work and prevention could be taken.
Obviously restricting any turn to one pass, polish where possible.
I've read about NITRIDE coating on crankshafts while flying planes, but don't know much about it other than it is praised to lengthen the over-all life of the crank.
2) Magnaflux, if so how high can you go on the amperage? I've never performed it but have been told the higher you go, the more definitive the test will be, but too high and the steel is weakened.
3) Balancing or chamfering the oil passages?
4) I have a new HB but it's a stock one in with less than 12k on it.
5) Sacrificing a small gerbil, or anything else no matter what.
I didn't have any detonation and running perfect, snapped at 1800 rpm, 3rd gear, 35 mph no load.
I just don't see how it busted smooth after rod journal 1, and trying to prevent having to do it again.
I have a few mods with the biggest adder being a 75mm BKK TB.
I'm not looking to ever push more than 275-300 if that much, but want it to last longer than before
Thanks