Author Topic: onan 12.5 single  (Read 7330 times)

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Offline The_Real_McCoy

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onan 12.5 single
« on: October 11, 2014, 05:50:07 PM »
i have an onan 12.5 engine off a toro wheelhorse and just wanting to see if anyone knew anything about it


chris

Offline The_Real_McCoy

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Re: onan 12.5 single
« Reply #1 on: October 12, 2014, 03:46:37 PM »
well i just want to know if they would be any good for racing if they are and thing like the onan opposed twin that dominated around my area a few years ago. i race with carolina mower racing association formally AMRA and i like doing stuff a little un-ordinary than the next briggs guy dont get me wrong i like my briggs and kohlers but i just want to do something different   
chris

Offline Conductor 81

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Re: onan 12.5 single
« Reply #2 on: October 13, 2014, 07:17:49 PM »
It would probably work in a governed class. There is no performance parts out there for them. You would have to have the parts all special made or try and match stuff up. The other thing is trying to find just normal parts sometimes is tuff for the onans. I believe they were bought out by Cummings. But to help you out more we would need to know why class you plan on running. Hope this helps.
Keith


Offline The_Real_McCoy

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Re: onan 12.5 single
« Reply #3 on: October 13, 2014, 11:53:45 PM »
i found a vanguard and an intec :woo: choices so ill keep the onan to play around with and the organization i race with dont have any governed classes the closest thing being stock flathead v twin and opposed but they dont have governors
chris

Offline BIG AL 202

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Re: onan 12.5 single
« Reply #4 on: October 14, 2014, 05:23:31 PM »
i have an onan 12.5 engine off a toro wheelhorse and just wanting to see if anyone knew anything about it
IS IT CAST IRON OR ALUMNIUM ? IF IT'S CAST IRON FIND SOMETHING ELSE, TO HEAVY.
ALWAYS VOTE FOR ED!   FONGS BROTHER FROM ANOTHER MOTHER!

Offline The_Real_McCoy

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Re: onan 12.5 single
« Reply #5 on: October 15, 2014, 05:18:25 PM »
it aluminum took it apart looks better on the inside then any other single cylinder mower engine ive ever seen very well built engine im going to have a flywheels machined for it and a better rod its around the same weight as an 28ohv briggs so im going to run it til i pop it   :badgrin:
chris

Offline The_Real_McCoy

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Re: onan 12.5 single
« Reply #6 on: October 21, 2014, 06:23:48 PM »
well found out today that it has the exact same carb as my 22hp kohler just doesnt have the fuel soleniod why?
chris


Offline GRUBDIGGER

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Re: onan 12.5 single
« Reply #7 on: October 23, 2014, 04:46:03 AM »
WHEEL HORSE DIDNT USE IT ON A 25 YEAR OLD MACHINE.
JOHN HERRING
ARMA TECH
TRI-STATE RACING MOWER ASSC.
http://wwwtsrm.smfforfree.com/

Offline The_Real_McCoy

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Re: onan 12.5 single
« Reply #8 on: October 29, 2014, 07:59:56 PM »
if its not the same or darn near it i have them both sitting next to one another the only thing i see that is different was the onans doesnt have the fuel shut off solenoid.
chris

 

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