- Messages
- 7,098
- Reaction score
- 6,053
- Points
- 527
- Location
- Naples Florida
- Boat Make
- Yamaha
- Year
- 2005
- Boat Model
- SX
- Boat Length
- 23
I have the non HO engines and they top out at 10200
-
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!)
Both Engines Limited to 9,000 RPM, WHY?
- Thread starter AZ Native
- Start date
- Tagged users None
- Messages
- 13,353
- Reaction score
- 13,453
- Points
- 857
- Location
- Royal, AR
- Boat Make
- Yamaha
- Year
- 2007
- Boat Model
- SX
- Boat Length
- 23
We both saw an increase in RPMs after changing impeller bearings. My port engine was running 10,400 last weekend from I believe a previous max of 10,200.
I wonder if changing impeller bearings would bump him a little.
- Messages
- 7,098
- Reaction score
- 6,053
- Points
- 527
- Location
- Naples Florida
- Boat Make
- Yamaha
- Year
- 2005
- Boat Model
- SX
- Boat Length
- 23
Yes, I saw a dramatic increase in RPM and the boat got way more quiet.