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Briggs Ohv Blowing Compression Into The Crankcase


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#16 916 hydro OFFLINE  

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Posted May 24, 2013 - 06:32 PM

you described the guy im working on this for to a T i went out to look at the mower to see if it was maybey a simple fix and as i was picking up my tools he handed me a small ballpeen hammer and said dont forget your axe.



#17 916 hydro OFFLINE  

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Posted May 27, 2013 - 12:05 PM

id say blown head gasket what do you think?

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#18 olcowhand ONLINE  

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Posted May 27, 2013 - 01:21 PM

id say blown head gasket what do you think?

 

Most I've seen that came out of one of those engines had head gaskets that looked JUST like that one, so that must be how they were made...right? :smilewink:   They dropped the ball on that design.  If they had put those 2 bolts both closer to the pushrod galley, then spread the rest equally spaced, there would be no problem.  



#19 Guest_gravely-power_*

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Posted May 27, 2013 - 01:36 PM

Most I've seen that came out of one of those engines had head gaskets that looked JUST like that one, so that must be how they were made...right? :smilewink:   They dropped the ball on that design.  If they had put those 2 bolts both closer to the pushrod galley, then spread the rest equally spaced, there would be no problem.  

Yeah, look at the distance between the 2 head bolts that are across the cylinder. Even engineers screw up.



#20 916 hydro OFFLINE  

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Posted May 27, 2013 - 05:25 PM

anyone know the tourqe sequnce for these



#21 Watchdog OFFLINE  

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Posted July 16, 2013 - 05:28 AM

I just did a Briggs OHV. There was so much carbon build up that it broke loose and got between the intake valve and the piston and bent the push rod. That is pi@@ poor engineering.

I did one yesterday with a bent push rod (intake).  The post for the exhaust valve rocker had come loose (also a common problem on the B&S OHV), which throws the valve clearance out of spec and rendered the decompressor useless.  Some red loc-tite on the rocker post, new push rods and valve adjustments it was back in business.

 

Jeff


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