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Converting a press fit rod to floating by honing?

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Old 12-13-2018, 10:40 PM
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Default Converting a press fit rod to floating by honing?

Seeking input............can you hone a Gen 4 bushed stock LS rod converting it to mate up with floating pistons? Rod small end measures .943", piston pin is .945".
Is this possible or recommended by decreasing the amount of bushing being left? Do I have this right or should this setup be press fit only? Tks.

Tks.
Old 12-14-2018, 06:41 AM
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99.9% of gen 4 rods are already floating pin. The exception is some 03-04 oddballs that used the gen 4 rod with a pressed pin, but I'm not sure on the bushing diameter on those.
Old 12-14-2018, 07:05 AM
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Originally Posted by cula8r
Seeking input............can you hone a Gen 4 bushed stock LS rod converting it to mate up with floating pistons? Rod small end measures .943", piston pin is .945".
Is this possible or recommended by decreasing the amount of bushing being left? Do I have this right or should this setup be press fit only? Tks.

Tks.
Honing .002” or so barely removes any material. You shouldn’t have any problems honing it out a little to fit a .945” pin. I’m about to do the same for a set of Wisecos I just bought.
Old 12-18-2018, 09:36 AM
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Originally Posted by JoeNova
99.9% of gen 4 rods are already floating pin. The exception is some 03-04 oddballs that used the gen 4 rod with a pressed pin, but I'm not sure on the bushing diameter on those.
Im with Joe on this , those do appear to be gen4 rods , can you post pics of piston that where on the the rods originally side view pin area ..What year make and model are these from ? I have never run across this , totally weird.
Old 12-18-2018, 09:45 AM
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My guess this is a 2004 LQ4 or another LS built in 2004 January to late March of that year.Check see the build day trim tag !
Old 12-18-2018, 04:29 PM
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Originally Posted by omc8
Im with Joe on this , those do appear to be gen4 rods , can you post pics of piston that where on the the rods originally side view pin area ..What year make and model are these from ? I have never run across this , totally weird.
I don't have any of the original engine pieces, I purchased these rods from another member on here. As long as I can hone these out a bit to fit the .945 pins.....all is good.
Old 12-18-2018, 04:55 PM
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They would need a oil hole hole I would imagine. You would probably have the possibility of gauling without the bronze bush.
Old 12-18-2018, 06:37 PM
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Honing bushings is a very doable procedure by any accomplished machine shop. Just take the rods with the wristpins you plan to use, and let them sort it out.

And like others have said, make sure that your pistons have the necessary grooves for retaining clips to hold the floating pins in place.
Old 12-19-2018, 04:22 PM
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What am I not connecting here. If they have bushings they are floating pin rods. But you have pistons for use with a floating pin, and the pin is .002 larger? And if the pin is gonna float in the rod the rod will have to be honed to further than the .945 diameter of the pin.
Old 12-20-2018, 10:00 AM
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Originally Posted by dixiebandit69
Honing bushings is a very doable procedure by any accomplished machine shop. Just take the rods with the wristpins you plan to use, and let them sort it out.

And like others have said, make sure that your pistons have the necessary grooves for retaining clips to hold the floating pins in place.
Originally Posted by 00pooterSS
What am I not connecting here. If they have bushings they are floating pin rods. But you have pistons for use with a floating pin, and the pin is .002 larger? And if the pin is gonna float in the rod the rod will have to be honed to further than the .945 diameter of the pin.
Checked with the machine shop & honing the small end to accommodate the floating pins is doable. SRP pistons # 329378.
http://www.jepistons.com/Catalogs/SR...t_top-pro.aspx




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