Machinists, removing pistons from press fit rods
#207537
01/29/09 10:46 AM
01/29/09 10:46 AM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
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OP
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NE Oklahoma
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Anybody on here able to successfully remove press fit pistons without damaging them? Ive got a set of KB quench dome pistons on 6 pack rods that I want to have removed, mill the quench domes and then put back on.
Ive called a few semi local shops and nobody will touch em, even though Ive heard of guys doing it with success before.
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: Machinists, removing pistons from press fit rods
[Re: Von]
#207538
01/29/09 10:59 AM
01/29/09 10:59 AM
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Joined: Aug 2006
Posts: 2,511 God's Country Maryland
GODSCOUNTRY340
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God's Country Maryland
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They'll press out a lot easier if you heat the rod first. Those shops are most likely afraid the KB pistons will break. I've installed them without a press, just heat the rod end and have the wrist pins in your freezer overnight. They will push in by hand a lot of times, maybe just a little nudging with a brass punch.
I love the smell of Deer guts in the morning, it smells like... VICTORY!
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Re: Machinists, removing pistons from press fit rods
[Re: Von]
#207541
01/29/09 12:35 PM
01/29/09 12:35 PM
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Joined: Mar 2003
Posts: 4,848 Memphis
HemiRick
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Memphis
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It is possible but I couldn't find a shop to do it for me either, a buddy did. He heated the small end w/ a torch and pressed the pins out.
Take care, Rick 68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451
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Re: Machinists, removing pistons from press fit rods
[Re: Von]
#207542
01/29/09 01:56 PM
01/29/09 01:56 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Romeo MI
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I've done it a couple of times useing a torch, no big deal. When you put them back on, heat it up (rod end) and slide the pin in... make sure its centered and you wont have much time till the rod will grab the pin(you dont have to rush but dont dilly dally)
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Re: Machinists, removing pistons from press fit rods
[Re: MR_P_BODY]
#207543
01/29/09 06:29 PM
01/29/09 06:29 PM
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Joined: Jan 2003
Posts: 21,072 Niles , Ohio
therocks
oh wait.but hey.lets see.oh yeah.
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oh wait.but hey.lets see.oh yeah.
Joined: Jan 2003
Posts: 21,072
Niles , Ohio
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My machinist can do it.He even pressed the pins out of my old 30 year old pistons with no problems.You need a good shop.Rocky
Chrysler Firepower
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Re: Machinists, removing pistons from press fit rods
[Re: Von]
#207548
01/30/09 10:56 AM
01/30/09 10:56 AM
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Joined: Nov 2004
Posts: 3,544 Syracuse,NY
CompWedgeEngines
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Syracuse,NY
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Its not the fact that you are simply pressing the rods thats the concern, as someone mentioned, its the fact that they are KB Hypers, and yes they are way more crack prone when pressing. With a piston press ( the RIGHT one) it will support the rod pin boss, and not the skirt or pin boss of the piston only. A good piston fixture is $600-800, thats just for the fixture, and not the press etc. Buy a whole Sunnen set up and its thousands of dollars. So my point is, make sure they have a fixture that supports the rod pin boss the proper way and you'll be fine. They will most likely want to heat the rod end on a hyper piston. Any good quality shop should be able to handle it.
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Re: Machinists, removing pistons from press fit rods
[Re: Bad340fish]
#207550
01/31/09 12:43 AM
01/31/09 12:43 AM
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Joined: Oct 2003
Posts: 3,698 NE Oklahoma
Von
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OP
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NE Oklahoma
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Quote:
[Tudors machine in Tulsa can do it i believe. My friend blew up a 350 a few years ago that had KB hyper pistons in it, they had a fixture to support the rod and not put pressure on the piston. This was years ago tudors may not even be around anymore.
Thanks for the reply. FWIW, Ive never heard of Tudors, but I'll see if I can fine em.
Thanks
72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72.
Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
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Re: Machinists, removing pistons from press fit rods
[Re: Von]
#207551
01/31/09 01:36 AM
01/31/09 01:36 AM
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Joined: Jan 2003
Posts: 8,027 Tulsa OK
Bad340fish
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Tulsa OK
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I don't know if you from tulsa or not but they are just off of peoria on 3rd st.
1326 E 3rd St, Tulsa, OK - (918) 582-2231
FWIW I don't know if I would have them do anything else or not. They did the 340 that was in my car when I got it. It had a main bearing in wrong and was bored all kinds of wrong it should never have ran. However, that was 14 years ago lol....they did a great job with my friends pistons.
68 Barracuda Formula S 340
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