How to lap Briggs and Stratton engine valves (PART 2)

Part 2 of how to lap/grind/seat Briggs and Stratton engine valves. Link to Part 1 at start of vid.
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[themidnightdaylight]

so that's where the valves are on a flat-head motor... I was wondering how the heck these little B&S motors worked... was starting to think it was magic :P good video :)

[gpzDave]

@themidnightdaylight Thanks, they are pretty cool little engines :)

[KNARF1]

Good Job...! From Kingston Washington, USA Very helpful using the basic tools...

[gpzDave]

@KNARF1 Thank you my friend! I'm glad it helped you. :)

[seapeddler]

@Z22ZINFS Good point. Now, what is the maximum allowable stem to guide clearance?

[Rarrin9378]

ITALY, FRANCE.

[Z22ZINFS]

You forgot a major step! For proper valve timing, after lapping valves you must grind a small amount off the end of the valve stem until the distance between the vavle and the push rod is within specs. A feeler gage is required to obtain the proper distance. Without checking the valve gap after lapping, the valve timing will be retarded, resulting in less compression and horse power.

[swabbster3]

i did a valve job on a 1958 briggs and the valves were held in with a pin

[gpzDave]

@southerngardener79 Hi! Yeah that could work, if you could get it to fit into the recess where the valve springs are located then it might work. Although a proper valve spring compressor is the best way, I might use the method posted below in the comments by "CRONULLAPOINTPL" on the cable ties, it's a good idea that is inexpensive.

Take care, Dave.

[southerngardener79]

@gpzDave He have you thought about a brake caliper compressor. The kind that I'm thinking of is the scissor type.