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Garden Tractors Discussion Forum

onan engine

Author  [Modern View]
Lee Richards

02-27-2014 13:39:11
72.35.39.56



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Will a P218g onan engine fit in place of a b43g engine in a John Deere318?




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Lee Richards

03-02-2014 09:02:36
72.35.36.130



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 Re: onan engine in reply to Lee Richards, 02-27-2014 13:39:11  
The motor I was interested in was for a case tractor [different crank out shaft.



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Bob

02-28-2014 13:42:06
64.255.159.192



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 Re: onan engine in reply to Lee Richards, 02-27-2014 13:39:11  
YES, at least in some forms, because both were used from the factory.

I'm not sure how many engine bases MAY have been offered.

The PTO end of the crankshaft needs to be 1-1/8".

There is a difference in the "thickness" of the flywheel between the two engines, which necessitated DEERE to use two different-length center driveshaft sections. (IIRC, the shaft for the P218 is shorter.)

Neither center section is available from DEERE anymore, but can be found used on Fleabay and other places, or it would be possible to re-work the old one.

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t.r.k.

03-01-2014 20:34:17
71.31.64.233



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 Re: onan engine in reply to Bob, 02-28-2014 13:42:06  
The other consideration is the starter. Your P218G engine will need the starter with the solenoid that hangs below the engine mount pads.

For instance, a starter from and engine that came from a Wheel Horse will not fit in the frame.



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Bob

03-02-2014 14:15:32
64.255.159.192



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 Re: onan engine in reply to t.r.k., 03-01-2014 20:34:17  
YES! I forgot that. The starters DO interchange, don't they? (Obviously some $$$ involved in that, though.)



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robert kummer

02-27-2014 16:18:42
96.3.33.148



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 Re: onan engine in reply to Lee Richards, 02-27-2014 13:39:11  
lee
please list the spec# from the engine you
intend to purchase.
there are SIXTEEN different crankshaft
options for this engine.
some are taper and some are internal splined .
thank you. boomer ( the used onan engine parts guy )



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