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150 hp yamaha
hisierra	#1  Posted on 04/12/13 - 2:39 PM
Member Posts: 2 Comments: 0 Joined: 02/26/13	compression 90 on all 6 cylinders. Does this sound low or is this acceptable?
Marko888	#2  Posted on 04/12/13 - 7:28 PM
Member Project Albums Posts: 413 Comments: 10 Joined: 05/26/08	My 1986 Johnson 150 is at between 82 and 88 on all 6 and runs like a top.