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14 H.P. B&S head bolt torque
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Posted by factorypilot (My Page) on Tue, Nov 17, 09 at 22:39
| Would anyone be able to give me the torque specs for the head bolts on a B&S model 26177 type 013001? Also are the valves on this engine set at TDC? I had to replace a head gasket.
Thanks. |
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RE: 14 H.P. B&S head bolt torque
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You could have just used your other thread for this, since it's the same engine, same event.
Cylinder head bolt torque= 220 INCH pounds.
To position engine correctly for valve adjust, bring the piston to TDC on the COMPRESSION stroke, then, with a screwdriver or pencil inserted through the spark plug hole and touching the piston, put 2 marks on the pencil or other object. Make one mark flush with the head surface at edge of hole and the second mark 1/4" above the first mark. Hold the pencil firmly against the piston and slowly turn the engine in the proper direction of rotation until the second mark on the pencil is flush with the head surface. This is the position to set the valves. Adjust both valves at this time. |
RE: 14 H.P. B&S head bolt torque
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| Thanks mownie, I thought that my other thread might not get any more views with the subject head labeled the way it was. Thanks for this info, I'm picking up the gaskets shortly. Are all OHV in the Briggs series adjusted this way? |
RE: 14 H.P. B&S head bolt torque
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***"Are all OHV in the Briggs series adjusted this way?"***
So far as I know, this will work for all Briggs OHV PUSHROD engines. The reason for dropping the piston to 1/4" after TDC on the compression stroke is to ensure that the intake valve lifter is not sitting atop the compression release node of the camshaft. If you adjust the valves when the compression release is raising the intake lifter, your effective intake valve lash will actually end up being about .003" more than the spec calls for, and this excess clearance defeats the compression release benefit, causing real problems trying to get the engine to crank over. The number of batteries, starters, solenoids and other components that have been "thrown fruitlessly" at Briggs engines (and I can imagine some of the frustrated owners literally "throwing" the old parts at the engine when it did not fix their problem), when all it needed was periodic, scheduled, valve adjustment would probably cause our collective jaws to drop. Briggs has introduced an OHV that they are calling Direct Overhead Valve or "DOHV" (not to be confused with Direct Overhead Cam or "DOHC").
This "DOHV" engine uses a very long, and roughly 90 degree bent, rocker arm or cam follower to replace conventional combination of lifters, pushrods, and rocker arms. |
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