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Discussion Topic:
Reaming king pins
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Steve S |
03-02-2010 @ 11:15 AM
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Member
Posts: 54
Joined: Feb 2010
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Do I need the special reamer for the king pins on a '39 pickup? I understand they need to be perfectly straight and aligned, which is why the tool does both sides at once. Can a corner machine shop do this job without this tool and get it right?
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c-gor |
03-02-2010 @ 1:59 PM
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New Member
Posts: 129
Joined: Oct 2009
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Years ago they sold "king pin reamers" at local NAPA dealers etc. Today, suggest you bring bushings, spindles & king pins to a machine shop or automotive store that has a machine shop. They will remove old bushings, press in new bushings and ream them to properly fit king pin
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37RAGTOPMAN |
03-02-2010 @ 2:55 PM
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Senior
Posts: 1942
Joined: Oct 2009
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My take on this,bring to machine shop to have done correctly, I used to use a AMMCO HONING MACHINE to get just the right feel, clean all the parts first, you can also remove the bushing, they can be tapped out,this is pretty easy to do, also use modern grease fitting, this is why the king pins are wore out, modern grease guns are not made exactly to grease original fitting, they are not made for one another, Modern fitting modern grease gun, not unless you have a vintage grease gun to match the fitting, hope this helps 37RAGTOPMAN
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supereal |
03-03-2010 @ 7:26 AM
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Posts: 6819
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All kingpin bushings must be honed to fit, as they decrease in diameter when they are driven into place. It hardly makes sense to buy a reamer for one job. At our shop, we use a Sunnen piston pin hone to fit the pins to the bushings. Remove the spindle assemblies and take them, along with the bushings and new pins, to a good shop. Any "slop" in the king bolts is magnified when installed in the vehicle. Our usual charge for removing the old bushings, putting in the new ones, and fitting the pins is only about $35, but get a price before you do it, as labor rates vary.
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Steve S |
03-03-2010 @ 7:48 AM
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Member
Posts: 54
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Thanks guys, I understand the need to do the job correctly and actually own special tools for other cars, but this is the only time I plan to do one this size. Sounds like the way to go is to find a shop that can hone both bushings at once, the way the special took is designed to work.
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jiw1 |
03-21-2010 @ 8:33 PM
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supereal,on reading your reply on reaming king pin bushings in your shop for $35.00,is that for one side or two? thank you.
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51f1 |
03-22-2010 @ 12:34 AM
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Posts: 573
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I don't think anyone reams king pin bushings anymore. They are honed with hones similar to brake cylinder hones. This is best done in a machine shop.
Richard
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supereal |
03-22-2010 @ 8:32 AM
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Senior
Posts: 6819
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That is the whole job. It takes about half an hour for set up and fitting. We use our Sunnen piston pin honing machine for the purpose. The job must be done carefully, as any slop in the kingbolts will be magnified when installed. Using a common reamer seldom produces the necessary fit. Cost will vary in different shops, of course. We prefer that the customer bring in the spindles, the new uninstalled bushings, and the king bolts. It is possible to distort the bushings if they are not put in place properly.
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jiw1 |
03-24-2010 @ 8:09 AM
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Posts: 20
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thank you,where are you located? i called a local napa machine shop and they told they would charge $40.00 per side.do you think this is a fair price or maybe a little over kill? thanks again,johnny
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Steve S |
03-24-2010 @ 8:21 AM
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Member
Posts: 54
Joined: Feb 2010
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That sounds high to me. My local machinist charged 40 total for both sides.
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