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What's on your bench today?


spudulike

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Been working on an MS150, it had a 5mm muffler mod so I did a few test cuts in this tune and then opened up the muffler to 8mm and advanced the ignition timing.

 

The mod is worth 7% gains across an average of three cuts, not as much as I was hoping but thats life! Would have been more interesting comparing with a standard saw.

 

Also got a MS362 in for a full porting, this looks like it has a bit left on the table, the exhaust can be significantly widened unlike the MS361. The uppers can be rolled back but almost nothing on the inlet as it is a strato engine and the piston hinders much widening of the port - possibly 0.75mm either side.

 

The lowers can be matched to the gasket and may open up the crankcase to get a bit more flow - a muffler mod should get this saw running with a bit more gusto:thumbup:

 

[ame=http://www.youtube.com/watch?v=k279fFMBmts]Stihl MS150 Muffler Mod 5mm - YouTube[/ame]

[ame=http://www.youtube.com/watch?v=k279fFMBmts]Stihl MS150 Muffler Mod 5mm - YouTube[/ame]

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