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Reload this Page Modified YS91SR


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Old 06-25-2016, 10:51 AM   #1 (permalink)
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Default Modified YS91SR
My 91SR needs a good home to go to. I have put alot of TLC into this engine, and it has served me very well.
I have modified the sleeve, and crank for better performance. Pictures are included.
This little thing pulls like crazy from the mods. The tuning window is a bit narrow, so it takes a little bit of experience to get it running perfect. But once it does, it uses less fuel and makes more power. I was getting 12 minutes of full rpm flight per tank on my ENV.
It sounds different too, a bit throatier. I will also include the YS check valve for the SR.
$135 shipped.
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YS Powered Rave ENV Stretch Protos 500, Stretch Mini Protos, 180 Trio
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Old 06-28-2016, 07:05 PM   #2 (permalink)
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YS Powered Rave ENV Stretch Protos 500, Stretch Mini Protos, 180 Trio
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