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Enlarging hole in billet aluminum

Posted By Outlaw56 11 Years Ago
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Outlaw56
Posted 11 Years Ago
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I would like to enlarge a 5/8 inch hole in a billet aluminum pulley and pulley spacers to 3/4 inch. If I get a good quality 3/4" bit and enlarge the hole on a drill press, am I risking a centering issue with the pulley on the shaft? Is there one special drill bit that works better than another? Am I better off having a machine shop do it?  This is the dual belt project on my Y blocks with using the double groove dampner with double groove alternator pulley and getting a water pump pulley that will work. I have a drill press.

Darrell Howard Whitefish, MT Outlaw 56 Ford F-100's

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Forum Post Enlarging hole in billet aluminum By Outlaw56 ( 11 Years Ago )
Forum Post The 3\4" drill bit is going to give you a hole that is a few... By steinauge ( 11 Years Ago )
Forum Post Do I need to buy a drill bit that is under 3/4"? By Outlaw56 ( 11 Years Ago )
Forum Post Darrell If you use an undersize drill and then Ream it to the size... By glrbird ( 11 Years Ago )
Forum Post I've done this using a step drill and haven't had any problems. Each... By MoonShadow ( 11 Years Ago )
Forum Post You should get it close enough with a drill press if you set it up... By charliemccraney ( 11 Years Ago )
Forum Post Enlisting a machine shop with an engine lathe to drill or bore the... By NoShortcuts ( 11 Years Ago )
Forum Post Charlie, No keyway. This is the fan pulley not the dampner. The fan... By Outlaw56 ( 11 Years Ago )
Forum Post It seems to me, a non anal type, that the center hole isn't that... By MoonShadow ( 11 Years Ago )
Forum Post Remember, the front spacer has to have a pilot to center the fan... By Hoosier Hurricane ( 11 Years Ago )
Forum Post [quote][b]Hoosier Hurricane (6/6/2014)[/b][hr] Remember, the front... By Outlaw56 ( 11 Years Ago )
Forum Post John, I did not do a very good job of explaining "spacer". Its not... By Outlaw56 ( 11 Years Ago )
Forum Post Moon Shadow, I hear what your saying. Four bolts should hold the... By Outlaw56 ( 11 Years Ago )
Forum Post Oops! I didn't realize that the billet pulley and spacers were for a... By NoShortcuts ( 11 Years Ago )
Forum Post Other than the shaft diameter, they pulley is a different depth. The... By charliemccraney ( 11 Years Ago )
Forum Post I have a spare truck water pump. I will take with me to NAPA in the... By Outlaw56 ( 11 Years Ago )
Forum Post Well I reported to NAPA with a spare waterpump which matches the one... By Outlaw56 ( 11 Years Ago )
Forum Post That is such an antiquated policy with Napa. I don't usually bother... By charliemccraney ( 11 Years Ago )
Forum Post No, its either NAPA or Orilley. There is a seasoned Y block guy at... By Outlaw56 ( 11 Years Ago )
Forum Post [quote][b]Outlaw56 (6/8/2014)[/b][hr]......The 62 Ford F-100 listing a... By Ted ( 11 Years Ago )
Forum Post Thanks Ted, do the 56-62 water pumps have the same shaft hub off set... By Outlaw56 ( 11 Years Ago )


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