• Welcome to Jetboaters.net!

    We are delighted you have found your way to the best Jet Boaters Forum on the internet! Please consider Signing Up so that you can enjoy all the features and offers on the forum. We have members with boats from all the major manufacturers including Yamaha, Seadoo, Scarab and Chaparral. We don't email you SPAM, and the site is totally non-commercial. So what's to lose? IT IS FREE!

    Membership allows you to ask questions (no matter how mundane), meet up with other jet boaters, see full images (not just thumbnails), browse the member map and qualifies you for members only discounts offered by vendors who run specials for our members only! (It also gets rid of this banner!)

    free hit counter
  • ISLAND JAY has your Jetboaters.net Clothing, hats, stickers and more all at a 30% discount until June. Click Here for more information>SWAG for JetBoaters.net members only

    Help out a new business and show off your love of Jetboating!

    You can dismiss this notice by clicking the "X" in the upper right>>>>

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
 
Back
Top