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Farmall & IHC Tractors Discussion Forum
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Tisco engine kit for 400- Question

Author  [Modern View]

06-06-2014 10:02:27

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My question is can I install the new piston pin bushings and pins without having to machine anything? Since everything except the rod is new I though maybe it would be "ready to go" out of the box. I haven't tried installing them yet, but I'm hoping it will be quick and machine-free.

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Owen Aaland

06-06-2014 16:58:19

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 Re: Tisco engine kit for 400- Question in reply to SW EM, 06-06-2014 10:02:27  
The proper procedure for installing pin bushings is to press them into the rods and then burnish them to insure a tight fit. Burnishing involves forcing a tool through the bushing to expand it into the rod. After that the bushing needs to be wet honed to a .0001 - .0002 fit. A quick check of the fit can be done by lubricating the pin and bushing with 30 weight oil and when with the pin vertical in the rod it should slowly slide through by its own weight.

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Nebraska Kirk

06-06-2014 12:38:26

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 Re: Tisco engine kit for 400- Question in reply to SW EM, 06-06-2014 10:02:27  
No, it won't be ready to go out of the box. You can press in the new bushings if you like, but like Wayne says, pin fit in the bushing is critical. Let an automotive machine shop hone the installed bushing to fit the pin.

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wayne in mn

06-06-2014 10:08:37

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 Re: Tisco engine kit for 400- Question in reply to SW EM, 06-06-2014 10:02:27  
The bushings will have to be honed to fit the pins; They will be a "tad" too tight when pressed in the rod end.
This is a very critical fit so let an automotive machine shop do it for you.

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