piston wrist pins
#1
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Is this something that has to be done at a machione shop with special tools or can I just heat the rods with a torch, press the pins out and replace the pistons?
#2
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most shops only charge around 2 each.I would think it would be hard with a torch
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#3
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They come out cold, and without the proper fixtures you will at the very least destroy the piston.
They can either be pressed in cold (again, fixtures required) or by hand with the rod heated.
Proper way if using heat is rod oven (our current method) , have done it with a oxy/acet torch more than once in a pinch. Trick is knowing how hot, you can ruin everything quickly.
They can either be pressed in cold (again, fixtures required) or by hand with the rod heated.
Proper way if using heat is rod oven (our current method) , have done it with a oxy/acet torch more than once in a pinch. Trick is knowing how hot, you can ruin everything quickly.
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#5
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I would like to know where you guys live that a machine swap will R & R a set of V-8 pistons for $16 ??????????? I get $80 and its worth every penny. You have to remove the old pistons, clean the rods, check the small ends for the proper interference fit, debur the edges so the new bearings will slide in without getting all scarred up, then install the new pistons. Let them cool a bit and get some lube in the pins. Then bag the box up to keep them clean. Every bit of an hours work, hmmmmmm I probably need to go up to $100 ![Smilie](/forums/images/smilies/smile.gif)
Bill Koustenis
Advanced Automotive Machine
Waldorf Md
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Bill Koustenis
Advanced Automotive Machine
Waldorf Md
#6
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I usually pay around $25 for all of the below stated, except for the fancy bags and boxes.
I guess maybe my guys should be raising their rates. ... NOT
I guess maybe my guys should be raising their rates. ... NOT
#7
Michigan Mad Man
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I would like to know where you guys live that a machine swap will R & R a set of V-8 pistons for $16 ??????????? I get $80 and its worth every penny. You have to remove the old pistons, clean the rods, check the small ends for the proper interference fit, debur the edges so the new bearings will slide in without getting all scarred up, then install the new pistons. Let them cool a bit and get some lube in the pins. Then bag the box up to keep them clean. Every bit of an hours work, hmmmmmm I probably need to go up to $100 ![Smilie](/forums/images/smilies/smile.gif)
Bill Koustenis
Advanced Automotive Machine
Waldorf Md
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Bill Koustenis
Advanced Automotive Machine
Waldorf Md
#9
Michigan Mad Man
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#10
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Let the machine shop do it. Or if you like messing with this stuff, get rods that are bushed for floating pins. Some theorize floating pins are better-lead to less rod breakage. Now I am new to boats and have yet to build an engine for one. But I have built engines with and without floating pins and had prob with neither.
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