Is .030 alot to turn off the crank?
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Is .030 alot to turn off the crank?
I got a call from the machine shop today & we can fix my crankshaft (spun rod bearing) and he said our options were to turn it .030 & get it back this week, or send it out & have it remanufactured back to stock specs. The price is really close but the the time is where the issue is. If we send it out, looking at over 3 weeks to get it back. Would you guys have a problem turning that much off it & turning it 7000 rpm? This is the first time I'v ever rebuilt the bottom end of an engine, so I really don't know if that would be high risk to do it that way or that is perfectly normal? Seems like alot of material to remove, I want the car running asap, but I don't want to be afraid to rev it either. Any opinions? He said they sell bearings as big as .040.
#2
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Have you looked at the price of a new crank ?
Seems it would be faster and better than either option they gave you.... IMO (unless it's something special/custom)
I'm not a machinist but due machine parts at work from time to time (Industrial Maintenance Mechanic)... and .030 is a lot. IF it was a stocker, then maybe.
Seems it would be faster and better than either option they gave you.... IMO (unless it's something special/custom)
I'm not a machinist but due machine parts at work from time to time (Industrial Maintenance Mechanic)... and .030 is a lot. IF it was a stocker, then maybe.
Last edited by Doug G; 06-12-2012 at 04:18 PM.
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the only new ones I have looked at are aftermarket ones online, but they are pretty big bucks. About 3x what it costs to have mine welded & returned to stock dimensions. It's just the time thing, 3 weeks during peek season is alot in Western NY, we only have a few precious mos to drive without snow on the ground!!..lol The guy that's doing my block looked around for one that's already been remanufactured, but can't find one, do you know of anywhere to get one?
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#12
Alot of pro engine builders are going thinner on the mains(turning the crank.020 or more).to keep the bearing cooler.the more the cranks turned the thicker the bearing.which helps move heat from the surface.