08-14-2008, 01:35 PM #1
- Join Date
- Jan 2007
Rings, props, timing and combination
Let me clear something up here. One all the results above are with the riva plate and 2 degree wedge. If you change either one the dynamics of the pump and the best combination most likely will change.
7750 is the Kawi rating , 7900 is my target after adding mods that let it breath. Once you let the engine breath it should make peak a little higher. I chose 7900 as a target because it gives me room on either side for error and weather.
Next thing is rpms kill engines and with the pump on this ski, you do gain speed with rpm but why spin the engine harder when you can accomplish the same with more prop. If you can pull a solas and you want maximum WOT speed get one it kicks ass everywhere but holeshot. Holeshot absolutely sucks, but add timing and a pulley and please someone give me a prop that does work down low. The key is you have to be able to pull the prop. If you cannot get 7800+ rpm out of the solas I believe it is hurting you.
Rings well too many variations to say which one works best. I can say I have lost no top speed performance by going with the larger rings. At the same time I can say the 84 and the 85 ring provide a noticeable increase in torque feel and acceleration. Plus they just are kool to have and play with.
08-14-2008, 02:26 PM #2
Good information and its is good to see the true ingredients to making great numbers. Glad to see this kind of good input from one of the top guys running top speeds.
I say thank you for sharing and giving valued information the helps us members achieve results close to yours.
I say thank you,
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By Jeff C in forum Sea Doo Open DiscussionReplies: 9Last Post: 01-28-2011, 08:09 PM
By flyboy in forum Yamaha PWC Performance (2-stroke)Replies: 32Last Post: 01-15-2007, 01:05 PM
By CrazyA in forum 4-Tec PerformanceReplies: 1Last Post: 11-30-2006, 07:10 AM
By BJTKRXPHD in forum 4-Tec PerformanceReplies: 4Last Post: 07-24-2006, 02:32 PM
By Carlos Miami RXP in forum 4-Tec PerformanceReplies: 11Last Post: 03-21-2006, 11:55 PM