Thread: What's the problem ???
07-25-2009, 08:05 PM #1
What's the problem ???
I have an 08 RXP-X and I have the 8400 ecu, kanaflex front intake and ride plate holes filled. Boat has 29 hours on it.
I was running the stock 4-blade and it was running 8260 and 72.3 mph with a decent holeshot but nothing to right home about.
Today, I put a 14/19 Skat 3-blade on her and was on (66 degree) flat water (76 degrees high humidity) turning 8340-8360 and 72.1 mph.
Problem: the boat seems to accellerate faster but now all of a sudden it's cavatating out of the hole.
Any ideas why?
Thanking you in advance.
07-25-2009, 08:18 PM #2
i might say check the Carbon seal but it has no hours on it.
07-25-2009, 08:19 PM #3
- Join Date
- Jul 2006
Could be alot of things.. have you sucked up any debris that could have damaged your wear ring? is anything wedged under your carbon seal boot? Have you checked the clearance between your prop and wear ring?
07-25-2009, 08:25 PM #4
07-25-2009, 10:08 PM #5
The wear ring was in perfect codition and the 3 blade I put in was brand new.
I had no issues with cavitation before trying the 3 blade.
07-25-2009, 10:18 PM #6
07-25-2009, 10:27 PM #7
07-25-2009, 11:14 PM #8
I have a billet nose cone that is also brand new.
I put the 14/19 on for closed course racing because I was told it gave a much better holeshot and that's what I wanted.
As I stated originally it seems to accellerate well once I get past the initial cavitation.
Is there a way to check the carbon seal?
07-25-2009, 11:16 PM #9
Is there a better prop for holeshot with my mods?
07-25-2009, 11:40 PM #10
Heck put the stocker back on for grins and just see, its possible the R and D grate does not match up good with 3 blade. Might not be able to feed that prop at idle. Are your running stock nozzle???
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By oodaeSGuy in forum 2-Stroke PerformanceReplies: 3Last Post: 08-20-2012, 09:24 PM
By cobrastrike in forum 2-Stroke PerformanceReplies: 2Last Post: 08-29-2011, 09:34 PM
By rpt50 in forum Yamaha Old School SkisReplies: 3Last Post: 07-06-2011, 08:44 PM
By zakre in forum Yamaha PWC Performance (2-stroke)Replies: 31Last Post: 07-03-2011, 09:42 PM
By 32DegH2O in forum Polaris Open DiscussionReplies: 15Last Post: 07-12-2007, 12:58 PM