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Heymow - Lawnmower Racing Forum
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Piston difference
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Topic: Piston difference (Read 3687 times)
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Snapper#67
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Piston difference
«
on:
February 12, 2019, 06:45:02 am »
Hi guys fairly new here, been doing a lot of reading to help with my motor, looking at the 31ci pistons and seeing 2 numbers referring to date codes before and after just wondering if someone could tell me the difference between the 2 whether it be thinner or thicker rings, flat top etc etc the numbers are as follows for a 31p677 - 594539 used before date code 14100100
And 594435 used after date code 14093000 so are there any huge differences I should be aware of? Any insight would be greatly appreciated thanks in advance!
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Negrey
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Re: Piston difference
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Reply #1 on:
February 12, 2019, 11:22:39 pm »
Not sure if this helps but I'll try. In my extra parts I have a piston labeled stock 31 214813 STD. Compression rings are 0.062 and oil ring 0.099
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Evan
crazycraftsman
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Re: Piston difference
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Reply #2 on:
February 12, 2019, 11:56:08 pm »
What is the serial # on valve cover or engine tag?
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owen
Lawnmower Racing in B.C Canada
WMWS points cup winner BP 2016
Wmws points cup winner CP 2017
Wmws points cup winner CP 2018
Negrey
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Re: Piston difference
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Reply #3 on:
February 13, 2019, 01:15:05 am »
After some more reading on the forum I found that number that is stamped in the top of the piston is NOT the part number.
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Evan
Snapper#67
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Re: Piston difference
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Reply #4 on:
February 13, 2019, 11:38:12 am »
The engine is a 31p677-0132-B1, I appreciate your responses, I ended up doing some more digging and found my answer, # 594435 piston is on order and on its way, thanks again everyone!,
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Heymow - Lawnmower Racing Forum
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Engine Help
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Briggs OHV & Vanguard
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Topic:
Piston difference
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