How to polish a crank ( crankshaft )
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it's steel egg factory ?
ctktlr 1 month ago
@Aussieheads1 Right, but polishing should have been done in the grinding machine esp for the rods instead of a lathe where you have the stroke offset dialed in not placeing uneven up and down pressure on the polishing belt....
kamphwagon1 1 month ago
perfect explaination thanks for the video
release19 2 months ago
Appreciated the video. Good Job of demonstrating.
HeyLanny 3 months ago
@enginesRmyLife that's right buddy,been building engines for 30yrs.All journals have a blueprint tolerance on main,bigend,cam,aux,balance shafts sizes usually 0.001 maximum(top) to minimum(bottom),even when a shaft is reground its always linished not for sizing,polishing the grain from grind,golden rule,if you can feel or even see a scratch it needs regrinding.More clearance = less oil pressure = failure and 400-500 grit paper can be used,but deglaze paper,no sparks at all,sparks is metal
Aussieheads1 5 months ago
@woodwardcars
he is not using "sanding belts" they are buffing belts. they use same grit labeling system as sandpaper, but feels more like 3m scotchbrite pad. if the crankshaft journal is measured to be within specification in size and out of round, then it can be polished with paste. even extensive polishing will not remove more than 0.0005" inch.
enginesRmyLife 7 months ago
Great vid!
jnmfam1 8 months ago
Where is your shop?
MrILLUMINATING 8 months ago
Really, that's all there is to it? I realize you have $thousnads in tools. What grit are the sanding belts? Nice vid.
woodwardcars 1 year ago