Thread: Sacred Ground 80.8 mph
09-18-2006, 12:23 AM #1
Sacred Ground 80.8 mph
Thanks to Nils, Jerry and Dan, I finally broke the 78 mph barrier today.
My hats off to all of you who are running hard hitting 80+ mph skis.
If you are like me, you have been reading threads about speeds approching 90 mph and wondering what you are doing wrong.
I think I have done everything mechanically possible to my B kit ski short of running nitrous, which I am going to avoid for longevity sake.
I tried different pump and impellor combinations and EMS mapping today and managed to squeak out an 80.8 mph with a triple bearing, SS ring 159 mm stock pump and a skat 3 blade 15/19 (20mm RR shaft) 81mm nozzle and Jerry's modified race gas map. I also ran an 80.4 mph with a solas 15/20, 81 mm nozzle, 8750 rpm's. The solas was machined to fit closer to the stator vanes which helped minimized cavitation. The non-machined Skat prop had a little more cavitation but better accelleration. I am going to send it back and have it also machined to fit closer to the stator vanes.
I still have a few things I can do to the hull but I don't know how I am going to see 85 mph anytime soon. Again, congratulations to Jerry and Dan for having achieved such awesome speeds. It takes a lot of hard work and testing to get their speeds. I know, I have been following their lead.
09-18-2006, 01:06 AM #2
- Join Date
- Aug 2006
Well done Scott!
09-18-2006, 07:47 AM #3
- Join Date
- May 2006
Maybe You Pm Some Things You Learned Along The Way I'm Stuck At 77 With B Kit
No Head Mods
09-18-2006, 08:06 AM #4
09-18-2006, 09:51 AM #5
Scott, im glad to hear it worked out for you.
09-18-2006, 12:31 PM #6
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By Enufpwr in forum 4-Tec PerformanceReplies: 16Last Post: 09-11-2008, 01:54 PM
By watermedic in forum 4-Tec PerformanceReplies: 11Last Post: 08-20-2006, 08:34 PM
By Green Hulk in forum 4-Tec PerformanceReplies: 25Last Post: 07-09-2006, 10:27 PM
By Green Hulk in forum 4-Tec PerformanceReplies: 8Last Post: 07-09-2006, 08:27 AM
By Ed in forum Sea Doo Open DiscussionReplies: 4Last Post: 05-29-2005, 11:00 PM