Results 1 to 6 of 6
  1. #1
    tobbe tobbe sweden's Avatar
    Join Date
    Jul 2008
    Location
    Vagnhärad sweden
    Posts
    270

    Help with cam spec

    Hello
    is there anyone who knows what the intake cam from vxr have for spec
    vs intake cam from fxho


  2. #2
    hitman's Avatar
    Join Date
    Aug 2006
    Location
    Ft. Lauderdale, FL
    Posts
    4,328
    +1
    12
    There is no great deal of a big measurable difference between the two cams... (lobe wise)

    The VXR N,A. cam only has about .004-.005 thou more lift, and 2 degrees more duration. The big difference is the bolt in lobe center difference on the two cams. The FZR/SHO intake cam installs at 122, and the VXR intake cam installs at 114.

    That's a big difference in cam lobe advancement.

    Say you bolt in a set of N.A. cams and they feel great.... WHY..... because the lobe centers are WAY different. You have better power because of the narrower LSA.

    Now if you put the R&D cam gears on the FZR/SHO cams, you will have even more power overall because the exhaust cam wont be TOO far advanced.

    The exhaust cam on the VXR is 108 and that is a little too far advanced in lobe center for the supercharged engine.......115-112 is great, which is attainable with the R&D cam gears.

    NOW, because there isn't much of a real difference in lift, that's why R&D has the RC2 cam profile. It's got WAY more lift and duration over the N.A. cams, and have proven so far to be the best cams available for the Yamaha engine.

    I know I did way more than just answer your question about the difference in specs but I just wanted to add in some other info to think about when deciding to play around with the cams in these engines. A lot of the info is straight from R&D and some of my own experience in playing around with my cams.

  3. +1 by:


  4. #3
    RichieFZR's Avatar
    Join Date
    Jan 2010
    Location
    Gold Coast, Queensland, Australia
    Posts
    2,093
    +1
    4
    RC3's here.




    Click image for larger version. 

Name:	RC3cams.jpg 
Views:	112 
Size:	115.0 KB 
ID:	240270

  5. #4
    tobbe tobbe sweden's Avatar
    Join Date
    Jul 2008
    Location
    Vagnhärad sweden
    Posts
    270
    ok thanks for the info.
    I ordered two intake cams from ho

  6. #5
    Is there any difference between the VX and the VXR N/A cams? Should I go VXR if I already have VX cams? Someone mentioned R&D RC2 (and even an RC3) which is the best performing and at what degrees should they be installed at? I do have adjustable cam gears installed but left the VX at 0 deg. I guess because they already come with more advanced timing?

  7. #6
    So stock oem setup, fx ho /vxr intake cam is better because of its marginal difference in lift and it's lobe center? Is it built into the cam or a difference in the oem cam gear? About to do valvetrain and have access to fx ho cams. If it is any better than the sho intake cam and cheaper than cam gears of want to do it. Just need someone who knows to confirm. Also is it true the sho cams are better than svho cams? Looking for best oem setup before I go buy aftermarket cams and cam gears.

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. help with cam, 2014 sea doo rxp
    By mjacob2448 in forum 4-Tec Performance
    Replies: 3
    Last Post: 05-10-2016, 09:36 AM
  2. Help with P0339 Cam Shaft Code RXPX not starting w/o Starting Fluid
    By fortawesomeiii in forum 4-Tec Performance
    Replies: 10
    Last Post: 09-02-2010, 04:38 PM
  3. help with cam removal?? rxpx
    By IM2FAST4U in forum 4-Tec Performance
    Replies: 2
    Last Post: 01-13-2010, 12:32 AM
  4. some help needed with cam timing
    By Bastiaan maarten Bok in forum 4-Tec Performance
    Replies: 4
    Last Post: 11-11-2007, 06:02 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
  •