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| | | | Joined: Mar 2009 Posts: 100 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2009 Posts: 100 | I have a press and it did not work to say the least. The piston was so tight that the press broke the piston and bent the connecting rod. Any ideas on how to get these off. My only thought is to heat them with a torch, but i dont know if i can get to the press in time to get them off before it cools.
Thanks for the Help
It's better to have it and not need it, then it is to need it and not have it. "Woodrow F. Call"
| | | | | Joined: Feb 2004 Posts: 29,798 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,798 | You need to make a specially-shaped support for the piston that completely surrounds the pin boss. Then set up precisely straight over the wrist pin with a correctly-sized pin pusher. Usually, the piston is ruined while pressing the pins out of the rods, but the rods shouldn't be damaged at all. I'd suggest finding an automotive machine shop with the right tooling, and pay them a little to remove the pistons the right way. It will cost considerably less than replacing the rod you've already ruined. Heating the small end of the rod is the right way to install the new pistons, but it also takes a jig to get the pin centered properly. Unless you plan on building a lot of engines, paying a pro is the cost-effective way to go for both removal and installation.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Mar 2009 Posts: 100 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2009 Posts: 100 | jerry,
i do plan on doing alot of engines, but for right now i think i will take this one into the machine shop. What kind of equipment should i be looking for, for the future.
thanks
It's better to have it and not need it, then it is to need it and not have it. "Woodrow F. Call"
| | | | | Joined: Feb 2000 Posts: 5,215 'Bolter | | 'Bolter Joined: Feb 2000 Posts: 5,215 | Just go to the local shop and look around, thats what you will need if planning to build engines.
Joe
| | | | | Joined: Mar 2009 Posts: 100 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2009 Posts: 100 | any other ideas out there
It's better to have it and not need it, then it is to need it and not have it. "Woodrow F. Call"
| | | | | Joined: Feb 2004 Posts: 29,798 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,798 | I make my own pin pushers and support fixtures, but I've got a couple of lathes handy to fabricate that kind of stuff. Look at one of the automotive machine shop suppliers' online catalogs like Goodson or K-line, and there should be a good assortment of piston removing/installing equipment listed. Quite often, I've looked at a commercially-available tool and figured out a way to duplicate it at considerably lower cost. Those suppliers also sell temperature-indicating crayons to mark connecting rods so they can be heated to the right temperature for installing press-fit wrist pins.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Mar 2009 Posts: 100 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2009 Posts: 100 | thanks Jerry you, as always, are the man.
It's better to have it and not need it, then it is to need it and not have it. "Woodrow F. Call"
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