Author Topic: Piston difference  (Read 603 times)

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Offline Snapper#67

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Piston difference
« on: February 12, 2019, 05:45:02 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!


Gotta risk it to get the biscuit!

Offline Negrey

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Re: Piston difference
« Reply #1 on: February 12, 2019, 10:22:39 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
Evan
British Columbia
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Offline crazycraftsman

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Re: Piston difference
« Reply #2 on: February 12, 2019, 10:56:08 PM »
What is the serial # on valve cover or engine tag?
owen
Lawnmower Racing in B.C   Canada
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Offline Negrey

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Re: Piston difference
« Reply #3 on: February 13, 2019, 12:15:05 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.
Evan
British Columbia
NOLMRC

Offline Snapper#67

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Re: Piston difference
« Reply #4 on: February 13, 2019, 10:38:12 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!,
Gotta risk it to get the biscuit!

 

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