Like Tree0Likes

king lice

Reply
Old 07-25-2004, 11:18 PM
  #11
Platinum Member
Platinum Member
Thread Starter
 
mcollinstn's Avatar
 
Join Date: Sep 2001
Location: tn
My Boats: 1991 F311SR1
Posts: 5,491
Default Re: king lice

Mine's a short fuse. Piston lifespan is around 25hrs. Not the poster child for reliability.
I'm re"calibrating" for best topend power at the expense of some of the explosive acceleration. I'm going to bring down the compression a few notches and take some ignition retard out of it (I'm at 225psi and 17 degrees of retard right now). This will basically make the tradeoff I'm interested in. I figure I'm somewhere around 275 to 290 hp.

The SeaDoo RXP is having teething problems. Seems that the one-way clutch on the supercharger drive is delicate and is not holding up well. The boats are fast, though, and seem to run 66 to 68mph box stock once broken in. The lower boost and nonintercooled GTX/SC is holding up a bit better. Combine the lower supercharger inertia with the generally less aggressive riding style of the three seater and you give the parts a better chance to live. I have also heard of SeaDoo denying warranty claims on some of these boats on all sorts of gray areas. If you plan to purchase a supercharged SeaDoo, make sure you trust your dealer to be your friend in the event of a warranty need, as opposed to covering his own butt. The RXP will outdrag and outrun a GP1200R Yamaha, but for about a grand, Riva and others offer kits to put the GP1200R on the winning side of the equation.

GroupK offers probably the best packages on a bang/buck/reliability scale. Your '00 XLL is a good boat to modify. The big bore kits get different reviews. GroupK removes the powervalves from the Yamaha cylinders on their big bore motors. Others offer the 1300R cylinder/piston kit as retrofit to the 1200R with excellent results.

Yes, of course I am running a digital ignition. Full total loss MSD multichannel programmable digital electronic ignition. 17 degrees retard starting in at 4000 to fully in at 8500 limit.
mcollinstn is offline  
Reply With Quote
Old 07-26-2004, 12:51 AM
  #12
Platinum Member
Platinum Member
 
Join Date: Jun 2003
Location: nantucket ma/naples fla
My Boats: 81 wellcraft nova 26 S/B arneson 6
Posts: 108
Default Re: king lice

Who are the "others" that do the 1300 cyls?? Do they keep the stock carbs?? I put the Riva air cleaners and the stinger pipe on my 1200 . Grp/K dosent like that set up, they like the stock air box and a "D"plate. I didnt talk about getting rid of power valves but did talk about Riva power valve controler and the ignition retarder. I like their approach of some motor work and some hull tweeking and pump work. DO you know anyone who has done GRP/K package?? If yes, how much did they spend?? I'd love to find someone who is good at this on the side of a regular job or shop. Any recomendationsdown on the so/west coast of fla or up in the NY/LI,NJ,CT,RI,NH,MASS area?? THANKS AWsr
obads 31 is offline  
Reply With Quote
Old 07-26-2004, 01:40 AM
  #13
Platinum Member
Platinum Member
Thread Starter
 
mcollinstn's Avatar
 
Join Date: Sep 2001
Location: tn
My Boats: 1991 F311SR1
Posts: 5,491
Default Re: king lice

http://www.islandracing.net/pages/793105/

I don't know anybody personally running the GK BB. I've known about Harry Klemm, though, since mid 70's. He was smart then, is smart now.
mcollinstn is offline  
Reply With Quote
Old 07-26-2004, 04:09 PM
  #14
Registered
 
aero-offshore's Avatar
 
Join Date: Apr 2001
Location: muskegon, michigan
My Boats: AERO,OFFSHORE
Posts: 586
Default Re: king lice

Quote:
Originally Posted by robyw1
I haven't ridden a wave runner since I wiped out on one going only 35. That was fast enough to hurt once you hit the water in a contorted position. Now 70? I just don't think I would want to try that. You guys are brave but be careful nonetheless.

Roby
Ever skip stones across the water, same thing, throw it soft, hits hard and sinks, throw it hard and it skips alot then sinks
aero-offshore is offline  
Reply With Quote
Old 07-26-2004, 04:26 PM
  #15
Official OSO boat whore
Charter Member
Trade Score: (2)
 
Join Date: Oct 2000
Location: Mequon, WI
My Boats: 8' row boat
Posts: 6,157
Default Re: king lice

I suppose that I should repost the pic of the jetski with a 2.5 in it.
Cord is offline  
Reply With Quote
Old 07-26-2004, 04:37 PM
  #16
Charter Member #232
Charter Member
 
Audiofn's Avatar
 
Join Date: Oct 2000
Location: Carlisle, MA USA
My Boats: 1979 Formula 302, 99 Formula 353, 81 Donzi 18 2+3 with 454
Posts: 18,379
Default Re: king lice

Quote:
Originally Posted by Cord
I suppose that I should repost the pic of the jetski with a 2.5 in it.
I think that one (actually a few of them) was made at Land and Sea in NH. Those guys were NUTS back in the day.

Jon
__________________
Put your best foot forward!
Audiofn is offline  
Reply With Quote
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Lofty
General Boating Discussion
19
08-25-2008 11:30 PM
Cord
General Boating Discussion
13
04-23-2004 10:27 AM



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 11:08 PM.


Copyright 2011 OffShoreOnly. All rights reserved.