Truing a Connecting Rod End - Ideas
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Cruiser
Joined: Apr 2016
Posts: 134
Likes: 2
From: Ontario, Canada
Truing a Connecting Rod End - Ideas
Have a look at my other threads for all the fun I've been up to as a new Harley owner...
So the motor is completely apart now, crankshaft runout is within tolerance, but the rod end on the busted piston is definitely bent. Not twisted, but bent. Thanks for the heads up from a couple members of this board to check for that.
My question is, has anyone ever trued up a con rod end while it's still in the crank assembly. I'm sure if I just went at it, I'd take the crank out of true, so I am thinking about fixturing the whole assembly on the bed of my mill and locking the rod in place separate from the rest of the assembly (while it's sufficiently supported) and then making a tool to bend the end back into shape. I may even be able to set it up in such a way that I could use a hyd jack to gently bend it.
Don't tell me I'm nuts, I know that already.
I can't justify a proper and pricey rebuild, so I am getting creative.
So the motor is completely apart now, crankshaft runout is within tolerance, but the rod end on the busted piston is definitely bent. Not twisted, but bent. Thanks for the heads up from a couple members of this board to check for that.
My question is, has anyone ever trued up a con rod end while it's still in the crank assembly. I'm sure if I just went at it, I'd take the crank out of true, so I am thinking about fixturing the whole assembly on the bed of my mill and locking the rod in place separate from the rest of the assembly (while it's sufficiently supported) and then making a tool to bend the end back into shape. I may even be able to set it up in such a way that I could use a hyd jack to gently bend it.
Don't tell me I'm nuts, I know that already.
I can't justify a proper and pricey rebuild, so I am getting creative.
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,081
Likes: 2,159
From: Ohio
You are nuts! I'll take a gamble at times but this is playing with a grenade and the pin is ready to fall out. In a mechanics world the molecular structure is damaged, she won't be able to take all you give her Captain Kirk.
Stellar HDF Member
Joined: Jan 2015
Posts: 2,504
Likes: 150
From: ct
I like lab rats !!!!!!! In all honesty, I bet if you did it PERFECTLY, it would probably hold up to maybe 4 or 5000 rpm a few times, depending on other conditions of course. I be watching this one !!!
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Cruiser
Joined: Apr 2016
Posts: 134
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From: Ontario, Canada
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Seasoned HDF Member
Joined: Nov 2006
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From: la la land jerzey
no evo rods can be rebuilt but the rods from japan ( RPLS ) is casted in them are cheaper to buy new and they come with a fitted crank pin and all the parts than fixing old bent rods, is no longer smart thing to do
i have put in hundreds of sets of them almost every year for 20 plus years and never had one set become a thing
i have put in hundreds of sets of them almost every year for 20 plus years and never had one set become a thing
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But this is insane.
Seems to me what you need to do is find a shop that has the rod you need. I'm sure with a few hours of calling around you could find one.
Thread Starter
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Cruiser
Joined: Apr 2016
Posts: 134
Likes: 2
From: Ontario, Canada
no evo rods can be rebuilt but the rods from japan ( RPLS ) is casted in them are cheaper to buy new and they come with a fitted crank pin and all the parts than fixing old bent rods, is no longer smart thing to do
i have put in hundreds of sets of them almost every year for 20 plus years and never had one set become a thing
i have put in hundreds of sets of them almost every year for 20 plus years and never had one set become a thing
If it can't be done with an Evo rod than so be it.
Yes I have seen the replacement rods with bearings and pin, I was hoping to make this happen in house to save some time and money as I can buy a rebuilt engine here locally for $1500. I've been quoted some crazy numbers for disassembling the crank, reassembly, and balancing, not to mention scheduling delays.