Results 1 to 6 of 6
  1. #1
    Moderator Insanediego Joe's Avatar
    Join Date
    Mar 2006
    Location
    San Diego, California, United States
    Posts
    5,885
    +1
    142

    Please help clarify whats required to run a rude 3

    I have heard everything from the delphi/riva 50# injectors lock up @ 65 psi of fuel pressure to the stock fuel pump cant supply enough pressure to the rrfpr.

    Will somebody simply tell me whats required for the rude 3?

    walbro pump?
    rrfpr?
    rude fuel controller?
    motec ?
    bosch injectors?

    Comon guys lay it out here for all to see.


  2. #2
    rick xp's Avatar
    Join Date
    Jul 2007
    Location
    Brisbane, Australia
    Posts
    1,013
    +1
    7
    I have never heard of the 50's locking up at 65psi. I run way more than that and seems to be fine.

    A friend has locked his 60lb injectors though but that was nearly at 100 PSI.

    You would need the following

    Riva ECU
    Riva 50lb Injectors
    RRFPR
    Valvetrain
    Intercooler
    15/22 +3mm
    81mm nozzle
    Walbro Fuel Pump
    3Rude with 08 oil mod
    Decent Air Intake and maybe Exhaust.
    Big set of balls...

    This would be a safe setup and prob good for low to mid 80's.

    Highly recommeded to get a Air/fuel meter and double check afr's.

    You could use a stock ECU but you then need some kind of fuel controller to take fuel at down low and a very steep prop. IMO its not worth it.

  3. #3
    home of the dislexic fingers breon's Avatar
    Join Date
    Aug 2007
    Location
    port st lucie fl
    Posts
    3,471
    see below ..riva injectors dont like the pressure...i run boch IS SEROES 50# With a riva ecu you w 60 lbs of base pressure you willl be at like 11 af at idle only as soon as you are 500 rmp off idle you wil be fine ..a rude controler fixes it ...but not required ot you can just run good injectors and a rude controler no rrrfpr

  4. #4
    Water4fire's Avatar
    Join Date
    May 2005
    Location
    New Braunfels TX.
    Posts
    10,073
    +1
    790
    Joe, I have seen JD1 Run the 3 rude with 50's and his open loop cooling set up, but not real sure on fuel pressure with the RRFPR. It ran extremly well in the upper 80's. I believe it to be a combo of the cool engine temps allowing the ecu to dump more fuel. Ofcoarse I do not know what the A/F was, but Dan has set up many set ups like this.

    My opinion would be to get the Rude controler and work with Nls. Jerry, or cal and set it up that way. I know how much cash is in your boat and it gets ugly real quick with so many re=builds.

  5. #5
    Moderator Insanediego Joe's Avatar
    Join Date
    Mar 2006
    Location
    San Diego, California, United States
    Posts
    5,885
    +1
    142
    Quote Originally Posted by Water4fire View Post
    Joe, I have seen JD1 Run the 3 rude with 50's and his open loop cooling set up, but not real sure on fuel pressure with the RRFPR. It ran extremly well in the upper 80's. I believe it to be a combo of the cool engine temps allowing the ecu to dump more fuel. Ofcoarse I do not know what the A/F was, but Dan has set up many set ups like this.

    My opinion would be to get the Rude controler and work with Nls. Jerry, or cal and set it up that way. I know how much cash is in your boat and it gets ugly real quick with so many re=builds.
    well... I was a dumb ass and slapped on a rude 3 not 100% sure as to what I needed. I think a phone call to nils at this point is the way togo or step back down to a rude 2 or 1. I dont mind rebuilding it I just want to do it right.

  6. #6
    formerly Gold06RXP Turbo Nick's Avatar
    Join Date
    May 2007
    Location
    Dayton, OH
    Posts
    2,095
    +1
    97
    Im still in the process of dialing mine in but ive upgraded to a Riva ecu, 50s, walbro pump and Rude3. Ive got the RRFPR set at 60 and im in the high 12s AFR. I would have turned up the pressure some but had an issue and had to come in befor I could tune some more. But the setup will definatly work.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Whats needed to run a Rude?
    By Gus13letter in forum 4-Tec Performance
    Replies: 14
    Last Post: 02-19-2009, 10:37 PM
  2. Replies: 0
    Last Post: 07-19-2008, 09:18 PM
  3. Please help I am going to go nuts
    By race24x in forum 2-Stroke Performance
    Replies: 23
    Last Post: 06-15-2008, 02:15 PM
  4. what sponsons to run????
    By joe563 in forum 4-Tec Performance
    Replies: 14
    Last Post: 06-20-2007, 10:30 AM
  5. PLEASE HELP...Polaris is ready to be fixed..
    By SDPolaris03 in forum Polaris How To & FAQs
    Replies: 8
    Last Post: 03-29-2007, 06:24 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
  •