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Is Hh140 Ohv Crankshaft The Same One As A Hh120?


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#1 aftonrob OFFLINE  

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Posted May 02, 2012 - 12:15 PM

Hi,i just bought a HH140 OHV motor sight unseen.It has a tapered shaft with a threaded bolt in the end of the shaft.I was going to use this on a sears suburban 12.I cant because there is no shaft to put the stack pulleys on it,its way too short..My original tecumseh motor with points broke the camshaft.So my question is and i think im right but i would thought i would ask.Is the camshaft in a hh140 ohv motor the same shaft in a hh120?I sould just swap out the cranks OR if someone has a Tecumseh HH100 or 120 camshaft with points"they are different from the rest"because the points cam lobe locks in at the end of the shaft.Email with price.

#2 Ryan313 OFFLINE  

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Posted May 02, 2012 - 01:38 PM

Welcome to the site! Thank you for joining! Unforunitly I can't answer your question, im sure somebody here will know.
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#3 bhts OFFLINE  

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Posted May 02, 2012 - 02:28 PM

There was 2 different cams used in these motors. One has straight teeth on the gear and the other has helical. If you have the specs from both motors it would be eaiser to tell if both are the same.

#4 small fry OFFLINE  

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Posted May 03, 2012 - 03:23 PM

Long as the 14 does not have the Dyna-Static balance gears the crank should work fine but the rod is different.
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#5 DH1 OFFLINE  

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Posted May 03, 2012 - 05:51 PM

The rods are the same for all HH100, HH120, OH140, OH160.
The OH140 is the same bore and stroke as the HH100
The OH160 is the same bore and stroke as the HH120, different than the HH100
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#6 aftonrob OFFLINE  

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Posted May 03, 2012 - 08:03 PM

So i need a HH100 crankshaft?instead of a HH120?It doesnt have the counterbalancing gears in HH140.So pretty much all i need to do is remove the flywheel,connecting rod and put the new"longer"one in.Would a person be wise to replace the seals?

#7 small fry OFFLINE  

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Posted May 04, 2012 - 09:47 AM

The rods are the same for all HH100, HH120, OH140, OH160.
The OH140 is the same bore and stroke as the HH100
The OH160 is the same bore and stroke as the HH120, different than the HH100


I miss spoke, your right they are all the same rod.

Edited by small fry, May 04, 2012 - 09:51 AM.


#8 small fry OFFLINE  

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Posted May 04, 2012 - 11:43 AM

Keep in mind the ignition might be different if the 14 is newer then the 12. Just because the crank will fit don't mean the wiring on your tractor will work with the 14.




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