Page 1 of 2 12 LastLast
Results 1 to 10 of 15
  1. #1

    310r mods goal 75 mph plus

    are there any proven reliable 75 mph plus 310 r with out using racing fuel


  2. #2
    Take the time to smile sirbreaksalot's Avatar
    Join Date
    Jun 2007
    Location
    Brisvegas
    Posts
    4,421
    +1
    674
    Quote Originally Posted by yamaha1390 View Post
    are there any proven reliable 75 mph plus 310 r with out using racing fuel
    Use the search button , there is heaps of proven options

  3. #3
    maptune x repitch ur prop to turn 8400 r&d cold air intake riva free flow ex and some free air mods should get u close...add a 16 lb s/c pulley and get the maptune 16 lb pulley tune and u'll b there...go with a ride plate pick up another 1 mph or so not sure about intake grate, im staying stock ride plate and grate for now for ruff water
    Last edited by yellow jacket; 03-15-2017 at 08:55 PM.

  4. #4
    "just sayin".. jetdave56's Avatar
    Join Date
    Nov 2008
    Location
    JERSEY SHORE
    Posts
    4,522
    +1
    626
    Running 8400 RPMs all day or most of day is a mistake without a percentage of race gas map tuner or no map tuner your gonna have to set up the ski to read AFRs too..

    Its your ski do what heart desires but to make a little faster to 76-77 mph I just don't think it's worth it , the Yamis and the new SD 300 are still gonna pull you with there reflash and big SC wheels .. Just don't want to see you disappointed ..

    Turning 8000-8100 doing 73-75 with just a handful of modifications is all you'll need running 93 octane , where you'll shine and kick ass is offshore or rough water riding where you'll need only a 55-60mph MOVING AVERAGE over a distance and with practice out in the rougher water nobody can touch you .. Stay focus of what this ski is all about and that is rough water hook up...

  5. +1 by:


  6. #5
    I ran my rxp seadoo at 8500-8600 running 82.6 mph all day long for yrs with a rude II s/c and riva ecu and a rxtx at 8300-8350 with a v teck tune running 78 mph 4mm spacer s/c fan both on pump gas 93 oct...I don't see where running a Kawasaki with the maptune at 8400 is going to b any different once I check the afr in spring with cool water and air for a 11.8-12 reading once summer gets here with warmer tempts if anything it'll run richer and safe Im not a racer and I don't run winter so no need to keep the afr hooked up once im dialed in. just to be safe and if it is lean i'll add a rising rate and from what jesus said the map tune will meet all fuel needs maybe add a rising rate to fine tune...I think he ask to run 75+ and thats what im building and not a yamma or seadoo burner if that's what I wanted I would have kept what I had and kept building it...if a person going to run high compression pistons or a 18 lb pulley turning 8800-9000 r's then run race gas. what im doing is a mild build to run pump gas 93 oct...
    now r&d has a 16 lb stage II 16 lb pulley kit for $1099 u need to add the performance kit stage I for $1900 to it tuning 8100-8150 r's running 77 mph on pump gas 93-95oct. u need to send in ur ecu to b reprogram and buy a new prop from jim or repitch the one u have. I looked at this option and almost went with it but for about a thousand less I can get there with the map tune and 16 lb. pulley + a few parts...
    Last edited by yellow jacket; 03-15-2017 at 07:13 PM.

  7. #6
    "just sayin".. jetdave56's Avatar
    Join Date
    Nov 2008
    Location
    JERSEY SHORE
    Posts
    4,522
    +1
    626

    310r mods goal 75 mph plus

    Quote Originally Posted by yellow jacket View Post
    I ran my rxp seadoo at 8500-8600 running 82 all day long for yrs with the riva ecu and a rxtx at 8350 with a v teck tune running 78 pump gas 93 oct...I don't see where running a Kawasaki with the maptune at 8400 is going to b any different once u check the afr just to be safe and if it is lean i'll add a rising rate and from what jesus said the map tune will meet all fuel needs...I think he ask to run 75+ and thats what im building and not a yamma or seadoo burner...if a person going to run high compression pistons or a 18 lb pulley turning 8800-9000 r's then run race gas. what im doing is a mild build to run pump 93 oct. gas...
    r&d has a 16 lb stage II 16 lb pulley kit for $1099 u need to add the performance kit stage I for $1900 to it tuning 8100-8150 r's running 77 mph on pump gas u need to send in ur ecu to b reprogram and buy a new prop from jim or repitch the one u have. I looked at this option and almost went with it but for about a thousand less I can get there with the map tune and pulley + a few parts...
    Didn't you just buy this ski your first time Ultra owner ?? The paint hasn't even dried from the factory and your gonna take your 16-17K investment take advice from a guy on the phone to run 8400 RPMs ..
    Dont compare an RXP RPMs to an Ultra you don't know the ski you better upgrade you engine internals while your at it....

    All that cost and risk for what 1-2 mph?...Ok go ahead then

  8. #7
    r&d is running a stage III 18lb pulley at 8300 r's 78 mph 100 oct. with stock internals, valve train, rods, pistons the r&d r2 ecu turns 8750 r's and r&d r3 ecu turns 8850 R's on 91 oct. gas also work with stock engine internal. I think jim at r&d and jesus at maptune knows a little more than u...so running 8400 r's is no problem. if u paid 16-17 k for this ski u got ripped off I paid $12,800 out the door...from now on im going to pay little attention to u...if I blow the dam ski up i'll rebuild it and put 300 pistions in it...it wont b the 1st rebuild.
    Last edited by yellow jacket; 03-15-2017 at 08:56 PM.

  9. #8
    Pain is fear leaving your body.... rlovebk's Avatar
    Join Date
    Aug 2008
    Location
    So. Cal.
    Posts
    5,367
    +1
    550
    Quote Originally Posted by yellow jacket View Post
    r&d is running a stage III 18lb pulley at 8300 r's 78 mph 100 oct. with stock internals, valve train, rods, pistons the r&d r2 ecu turns 8750 r's and r&d r3 ecu turns 8850 R's on 91 oct. gas also work with stock engine internal. I think jim at r&d and jesus at maptune knows a little more than u...so running 8400 r's is no problem. if u paid 16-17 k for this ski u got ripped off I paid $12,800 out the door...from now on im going to pay little attention to u...if I blow the dam ski up i'll rebuild it and put 300 pistions in it...it wont b the 1st rebuild.
    For racing and folks that want to blow up their engine or perform regular rebuilds this is fine.
    For the guy that wants a reliable reasonably fast Ultra it is not.

  10. +1 by:


  11. #9
    this is a mild build...4 u who r scared leave ur machine stock this thread isn't 4 u...this ski will run all day with a maptune at 8400 r's. 16 lb r&d pulley at 75+ mph for yrs as long as I get the afr at 11.8-12 it'll take a good ski to out run it in the chop. ur right u should leave ur ski stock 4 me balls 2 the wall...hahaha
    Last edited by yellow jacket; 03-16-2017 at 04:40 PM.

  12. #10
    Take the time to smile sirbreaksalot's Avatar
    Join Date
    Jun 2007
    Location
    Brisvegas
    Posts
    4,421
    +1
    674
    Man somebody has very miss understood about R& D rpm vs speed packages lol
    Gotta love advertising material lol

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. 75 mph RXT, NO ecu, NO B-kit
    By 01xdime in forum 4-Tec Performance
    Replies: 93
    Last Post: 04-09-2010, 06:26 PM
  2. Any 75 mph stock S/C & I/C RXP's?
    By Sandy in forum 4-Tec Performance
    Replies: 19
    Last Post: 04-03-2007, 04:22 PM
  3. 80 MPH plus 2006 GTI/GTI SE
    By Sundance in forum 4-Tec Performance
    Replies: 3
    Last Post: 08-06-2006, 09:13 PM
  4. 75 MPH Ski Rentals????
    By golson in forum Sea Doo Open Discussion
    Replies: 22
    Last Post: 06-29-2006, 05:11 PM
  5. Difference between 68-70mph and 75+mph
    By Compwhiz82 in forum Sea Doo Open Discussion
    Replies: 14
    Last Post: 11-04-2005, 01:20 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •