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Garden mark squire 12


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#1 Tl700 OFFLINE  

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Posted March 02, 2015 - 11:31 AM

I have a 1967 12hp gil3340A. Garden mark by wards. I'm looking for a replacement Briggs and Stratton piston and I'm running into some problems. I believe the engine that is installed does not match the numbers on the housing. I ordered the piston for the engine model 300424 type 0121-01 and the piston I received is much smaller than the piston that came out of the engine. The new piston or (standard) is 3.43 in diameter and the old piston is 3.53. Every contact I have is telling me about the overs ie .010 .020 .030.
The size difference In these two Pistons is .10. I'm thinking that this is a higher powered engine that was placed in this particular tractor with the old housing and engine numbers. If anyone has any ideas as to a Briggs and Stratton piston that measures 3.53 with a part number it would be greatly appreciated or what engine size this could possibly be. Thanks in advance
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#2 boyscout862 OFFLINE  

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Posted March 02, 2015 - 12:48 PM

Welcome to GTT. Checkout the Manuals Section for the B&S shop manuals. Good Luck, Rick



#3 tater195 ONLINE  

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Posted March 02, 2015 - 01:37 PM

without double checking the numbers, that sounds like a 16hp block.14-16's had bigger valves also



#4 tater195 ONLINE  

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Posted March 02, 2015 - 01:45 PM

This is the piston for the 14 - 16 hp engines. 3.5625 std bore

 

http://www.amazon.co...s/dp/B002WNUDOG


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#5 Texas Deere and Horse OFFLINE  

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Posted March 02, 2015 - 01:59 PM

Here is a chart that gives a lot of great info on the B&S engines including bore sizes.

 

http://gardentractor...ications-chart/


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#6 Sawdust OFFLINE  

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Posted March 02, 2015 - 02:04 PM

If your block has been bored you should see the number stamped on top of the piston. Example .10 .20

#7 KC9KAS OFFLINE  

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Posted March 02, 2015 - 05:56 PM

:welcometogttalk:



#8 Tl700 OFFLINE  

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Posted March 03, 2015 - 03:37 PM

Thanks for all the info on here kinda figured I could find what I needed from the forum. I will update on what I find. I was thinking what Tater stated it was a 14 or 16 hp engine. When I spoke with the B&S tech they said the bore size I have is 32 cubic inches not the 30 the original engine came with. I am going to get the piston for the 32 and see how it goes.




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