Recent post got me to thinking .
What do thing was the best engine " of it's time "
NO wrong answers here this is just based on peoples experiences.
Me personally think the Onan P220 - proven block design, reliable ignition system , ample power without being too fuel hungry. with routine maintenance will go many thousand hours of use . (going off personal experience )
The good the bad and the ugly
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DavidBarkey
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Timj
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Re: The good the bad and the ugly
I think the P series is that way, my P216 and P218 just run and run well. P218 is heading towards 1500 hours, doesn't use oil, doesn't smoke.DavidBarkey wrote: ↑Tue Jan 23, 2024 7:03 pm Recent post got me to thinking .
What do thing was the best engine " of it's time "
NO wrong answers here this is just based on peoples experiences.
Me personally think the Onan P220 - proven block design, reliable ignition system , ample power without being too fuel hungry. with routine maintenance will go many thousand hours of use . (going off personal experience )
let's go, it's finally time to blow. 
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Jancoe
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Re: The good the bad and the ugly
B block with p heads. B blocks had better valves and seats. Build from there with 20hp cam. Use p ignition. If I were to build one that is.
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DavidBarkey
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Re: The good the bad and the ugly
Curious , what is different in the valve and seats that make the B blocks better ?
Dave
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Jancoe
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Re: The good the bad and the ugly
B block has thicker valve stems
B valve stems are 11/32. ( .343 )
P valve stems are close to 9/32 ( .280 )
I don't hear of b blocks loosing a valve seat. Just p blocks. They changed to thinner valve stems and the valves couldn't carry the heat enough?
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B valve stems are 11/32. ( .343 )
P valve stems are close to 9/32 ( .280 )
I don't hear of b blocks loosing a valve seat. Just p blocks. They changed to thinner valve stems and the valves couldn't carry the heat enough?
Sent from my SM-S906U using Tapatalk
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DavidBarkey
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Re: The good the bad and the ugly
Thanks , good to know. I like working with Onans . Always learning something new .Jancoe wrote: ↑Wed Jan 24, 2024 8:38 am B block has thicker valve stems
B valve stems are 11/32. ( .343 )
P valve stems are close to 9/32 ( .280 )
I don't hear of b blocks loosing a valve seat. Just p blocks. They changed to thinner valve stems and the valves couldn't carry the heat enough?
Sent from my SM-S906U using Tapatalk
Dave
Mad Tractor Builder
Mad Tractor Builder