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Echo 28CC engine - 4/21/2012 9:53 PM   
jymz


 

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From: Delaware, OH, USA
Status: offline 		I found this on Fleebay for $15.00 and thought it could make a good conversion. The Zenoah carb block fits with little modification and I have a Bennett muffler. What I need help with is what size carb would work?

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RE: Echo 28CC engine - 4/21/2012 11:28 PM   
w8ye



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From: Shelby, OH, USA
Status: offline 		11.2mm would be ideal. This would be a Walbro with a "28" cast into the venturi. The usual prop would be a 18 X 8

They run pretty good with a "24"

With a smaller prop like a 16 X 8 they could use a 1/2" or "32" Walbro

The "SB" in the part number means it is a short block for several different applications



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RE: Echo 28CC engine - 4/23/2012 2:32 PM   
jymz


 

Posts: 18
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Joined: 1/26/2007
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From: Delaware, OH, USA
Status: offline 		Thanks for the reply. I have one that should work WT263. I was thinking it would be a bit small for a 28cc.

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RE: Echo 28CC engine - 6/27/2012 2:10 AM   
jymz


 

Posts: 18
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Status: offline 		Nice, new and clean.

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RE: Echo 28CC engine - 6/27/2012 2:16 AM   
jymz


 

Posts: 18
Score: 100
Joined: 1/26/2007
Last Login: 5/19/2013
From: Delaware, OH, USA
Status: offline 		Starting to look like something.

Question....... Should I be using the thick black gasket between the cylinder and the block or just sealant?

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RE: Echo 28CC engine - 6/27/2012 9:40 AM   
w8ye



Posts: 36435
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From: Shelby, OH, USA
Status: offline 		The desired ultimate goal is to achieve .020" squish clearance between between the piston and head.

You can place solder strips on four corners of the piston and measure how thick the solder was compressed. 

You may need the base gasket and it may be better to remove it?


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