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275SDX compression

cyclops

Jet Boat Addict
Messages
65
Reaction score
44
Points
107
Boat Make
Yamaha
Year
2015
Boat Model
Limited S
Boat Length
24
Hey folks! I’m buying a 2023 275SDX with 14.5 hours. Compression tests were 110-120psi per cylinder. I expected 180-200 like on the traditional 1.8L N/A motor. Can anyone report their own compression results?
 
Hey folks! I’m buying a 2023 275SDX with 14.5 hours. Compression tests were 110-120psi per cylinder. I expected 180-200 like on the traditional 1.8L N/A motor. Can anyone report their own compression results?
Also, what’s your top speed? This one was 47mph but very windy and some chop
 
Supercharged/turbo engines a
Have much lower compression readings. They should be a bit higher but probably because you cant pin the throttle open fully while cranking. 125psi+ would be real good for your engine.
47mph on that boat is good. The 255s are getting 52/55 mph
 
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