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Paul Hutt
Joined: 26 Sep 2009
Posts: 388
Location: United States, Washington, Olympia
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 Posted: Sun Mar 28, 2010 1:24 pm Post subject: Crankshaft bolts torque |
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I need the torque for WF crankcase bolts.
I got the following from Briggs & Stratton web site. http://www.briggsracing.com/racing-engines/engine.aspx?model=124335#general_specs
The only thing that looks close is "Side Cover." No crankcase cover.
The B&S part number for crank cask cover/sump bolt is 699478
SIde Cover 10mm 95-125 lb-in. (11-14 Nm)
However, the torques specs for cylinder head bolts is 200-220 and flywheel fan @ 180-240
So the Side Cover could not be the crankcase cover.
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Bernie Lacotta
Joined: 21 Mar 2006
Posts: 168
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| Posted: Sun Mar 28, 2010 3:17 pm Post subject: Re: Crankshaft bolts torque |
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| Paul Hutt wrote: | I need the torque for WF crankcase bolts.
I got the following from Briggs & Stratton web site. http://www.briggsracing.com/racing-engines/engine.aspx?model=124335#general_specs
The only thing that looks close is "Side Cover." No crankcase cover.
The B&S part number for crank cask cover/sump bolt is 699478
SIde Cover 10mm 95-125 lb-in. (11-14 Nm)
However, the torques specs for cylinder head bolts is 200-220 and flywheel fan @ 180-240
So the Side Cover could not be the crankcase cover. |
Paul I do not know how you deduced that the Side Cover is not the Crankcase cover but the Side cover IS what Briggs calls the Crankase cover. I know it may slightly be confusing but torque the SIDE COVER ( CRANKCASE ) to 125 lb-in and all will be well. Remember that is lb-in NOT lb-ft. You're not working on a Mazda !!!
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Paul Hutt
Joined: 26 Sep 2009
Posts: 388
Location: United States, Washington, Olympia
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| Posted: Sun Mar 28, 2010 3:48 pm Post subject: Re: Crankshaft bolts torque |
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| Bernie Lacotta wrote: |
Paul I do not know how you deduced that the Side Cover is not the Crankcase cover but the Side cover IS what Briggs calls the Crankase cover. I know it may slightly be confusing but torque the SIDE COVER ( CRANKCASE ) to 125 lb-in and all will be well. Remember that is lb-in NOT lb-ft. You're not working on a Mazda !!! |
Bernie,
How do I convert from lbs-ft to lbs-in.
Paul
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Bernie Lacotta
Joined: 21 Mar 2006
Posts: 168
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| Posted: Sun Mar 28, 2010 4:57 pm Post subject: Re: Crankshaft bolts torque |
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| Paul Hutt wrote: | | Bernie Lacotta wrote: |
Paul I do not know how you deduced that the Side Cover is not the Crankcase cover but the Side cover IS what Briggs calls the Crankase cover. I know it may slightly be confusing but torque the SIDE COVER ( CRANKCASE ) to 125 lb-in and all will be well. Remember that is lb-in NOT lb-ft. You're not working on a Mazda !!! |
Bernie,
How do I convert from lbs-ft to lbs-in.
Paul |
Divide the lb-in , for instance 125 lb-in by 12 , that will give you 10.4 lb-ft. As you can see that is a small number, I recommend you purchase a 3/8 drive lb-in torque wrench. You really need one to work on these engines. I think the only hardware that requires lb-ft on the WF is the flywheel retention nut. You can usually find a decent lb-in "click" type torque wrench at Sears on sale for $60 or so. It will be your favorite tool !!!
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Paul Hutt
Joined: 26 Sep 2009
Posts: 388
Location: United States, Washington, Olympia
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| Posted: Mon Mar 29, 2010 5:34 pm Post subject: Re: Crankshaft bolts torque |
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[quote="Bernie Lacotta"] | Paul Hutt wrote: | | Bernie Lacotta wrote: |
Paul |
Divide the lb-in , for instance 125 lb-in by 12 , that will give you 10.4 lb-ft. As you can see that is a small number, I recommend you purchase a 3/8 drive lb-in torque wrench. You really need one to work on these engines. I think the only hardware that requires lb-ft on the WF is the flywheel retention nut. You can usually find a decent lb-in "click" type torque wrench at Sears on sale for $60 or so. It will be your favorite tool !!! |
So far my favorite tool is the rubber mallet. Sometimes I am not sure I should use it. When that is the case I always use it. 
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