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06-03-2009, 06:49 PM
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#1 |
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Registered User
Join Date: Apr 2007
Location: antreville, south carolina
Posts: 873
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seperating pistons and rods
whats the best way to get them apart...i tried tapping the pins out but got nowhere.thanks
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06-03-2009, 06:56 PM
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#2 |
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Active Member
 
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: seperating pistons and rods
You have to have them pressed out by machine shop. They will also install the new pistons if that's what you need to do. Don't try to whack them out. You'll ruin both the pistons and the wrist pins.
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06-03-2009, 07:13 PM
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#3 | |
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just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: seperating pistons and rods
68gmsee is right. They are actually what is called an "interference fit" meaning that the pin is bigger than the hole in the connecting rod. The small end of the rod must be heated in order to get the pin either in or out.
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06-03-2009, 11:33 PM
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#4 |
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Gearhead and audio junkie
Join Date: Aug 2008
Location: nunyah
Posts: 452
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Re: seperating pistons and rods
Get a large caliber rifle and fire right at the pin! Preferably with a .50cal
Just kidding. Take em to your local machine shop I don't think theyd charge you much to push em out |
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06-04-2009, 06:14 AM
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#5 |
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ENGINE BUILDER
Join Date: Apr 2006
Location: Shortsville n.y.
Posts: 344
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Re: seperating pistons and rods
You need a press to get them off the rods. The machine shop can use a rod heater to install the pistons or I have a special OTC setup that reaches inside the piston and holds the rod and presses the pin through without damaging the piston.
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