Current YS HP ratings
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ALL DEPEND ON NITRO CONTENT OF THE FUEL AND LOCAL CONDITIONS.
YS 140 L 3 plus HP on 30% nitro
YS 120 SF 2.1
YS 63- 1.6
YS 110-2.1
YS 140 Sport-2.7
YS 140DZ-3.0 (Generally 3-400 rpm faster than a 140L)
YS 160 DZ 3.4 on 30% nitro
YS 140 L 3 plus HP on 30% nitro
YS 120 SF 2.1
YS 63- 1.6
YS 110-2.1
YS 140 Sport-2.7
YS 140DZ-3.0 (Generally 3-400 rpm faster than a 140L)
YS 160 DZ 3.4 on 30% nitro