Author Topic: Briggs 28 Flatty Valve timing  (Read 434 times)

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Offline shiftyguy

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Briggs 28 Flatty Valve timing
« on: June 06, 2018, 08:00:42 AM »
I'm not looking how to do the timing, I'm looking to see if anyone know the correct valve opening BTDC. For example many forms on engine I have read they open up on 4 stroke anywhere between 10-30 degrees BTDC. 

Q1.What is the stock Valve timing opening BTDC?  In degrees.






Offline rotten ron

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Re: Briggs 28 Flatty Valve timing
« Reply #1 on: June 06, 2018, 09:36:06 PM »
You need a service manual to find that

Offline PJG56

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Re: Briggs 28 Flatty Valve timing
« Reply #2 on: June 07, 2018, 06:09:42 AM »
You need a service manual to find that

If I remember right@.050 lift its about 8-10 btdc,valve actually comes off the seat probably 30-35 deg. before that.
you wont find those specs in a service manual,these figures were done with a degree wheel and dial indicator
Paul Guptill  (oppy) #238modX
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