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p216 onan


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#1 mikedeere OFFLINE  

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Posted December 12, 2010 - 10:07 PM

Hello, I am new here and Ineed a little bit of info. Does anyone know what the standard cylinder bore size? Would it be 3.250? I am assuming that sense it is a 3 1/4" bore. I am getting it bored to 30 over. It has some rust inthe cyl. I`m hoping it will clean up. I will know tomorrow, the machinist is going to rough bore it to see if it will clean up. If not I will be looking for a bare block. Thanks

#2 mikebramel OFFLINE  

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Posted December 12, 2010 - 11:22 PM

per this reference i would say so
112-0264 STD Piston Kit B & P Series 3 1/4 Bore 112-0264 std piston kit [112-0264] - $109.50 : Onanparts.com, Your Onan Parts Solution

#3 olcowhand ONLINE  

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Posted December 13, 2010 - 08:58 AM

The older BF 16hp were 3 1/8" bore. I haven't been into a P216, but they must have a shorter stroke with the larger bore size.

#4 mikedeere OFFLINE  

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Posted December 13, 2010 - 04:20 PM

Thanks for the answers. I was pretty sure. I just wanted to ask for sure. Should get a call today if it cleans up. It only has 500 hrs on it I guess it got water in it somehow, just one cyl must have gotten water in it somehow,had rust pits in it so it was pushing oil out of the air cleaner and the fuel pump,

#5 mikedeere OFFLINE  

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Posted December 15, 2010 - 04:30 PM

Where might I find a service manuel for the onan p216?

#6 olcowhand ONLINE  

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Posted December 15, 2010 - 04:50 PM

Where might I find a service manuel for the onan p216?


I've never found a free download pdf for the P series, or for BF series either. Here's a place to buy a downloadable pdf service manual:
Documents / eBooks: DOWNLOAD: Onan P216 Service
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