Results 1 to 12 of 12

Thread: highest octane recomended for 250r

  1. 06-07-2007, 04:34 PM #1
    fast94tracer's Avatar
    fast94tracer
    fast94tracer is offline First Time Rider Arm chair racerNew to the board
    Join Date
    May 2007
    Location
    lancaster,ca
    --
    125

    highest octane recomended for 250r

    so what would you recommend
    the guy i bought the bike from told me he put a high compression piston in my bike and a larger carb but i really dont believe him other than i can tell the top end is from an 81-82 250r and i have an 83
    it has a red head and jug on a black block

    so who knows
    Reply With Quote Reply With Quote
  2. 06-07-2007, 05:43 PM #2
    InPiEcEs's Avatar
    InPiEcEs
    InPiEcEs is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Apr 2004
    Location
    Northeast Wisconsin
    --
    378
    It wouldn't be a high compression piston..........maybe a reshaped head or something. I would run premium pump at the least.
    One piece at a time. Status: The Beast is Done..06-23-07
    Back in the saddle again
    Currently owned rides:
    My sleds, and.........
    1995 CBR600F3
    1976 Kaw 400 triple-smoker......SOLD
    1986 250R...owned since 1990
    06-23-07........the R is finally done!!!
    ESR pipe, Aktive reeds/CR cage, 38mm PWK, +4 Dominator
    mild clean-up porting, an open K&N, CR and YZ calipers.......among other things
    Reply With Quote Reply With Quote
  3. 06-07-2007, 06:17 PM #3
    1upfront's Avatar
    1upfront
    1upfront is offline Got The Holeshot Arm chair racerJust too addicted
    Join Date
    Apr 2007
    Location
    ohio
    --
    774
    I use turbo blue 110 its great stuff.
    Reply With Quote Reply With Quote
  4. 06-07-2007, 08:17 PM #4
    Dammit!'s Avatar
    Dammit!
    Dammit! is offline Power User The day begins with 3WW
    Join Date
    Sep 2004
    Location
    Phoenix, AZ.
    --
    6,719
    Blog Entries
    2
    It depends on how much compression you're getting. I run 100LL aviation fuel. Works great for me.
    Reply With Quote Reply With Quote
  5. 06-07-2007, 08:35 PM #5
    fast94tracer's Avatar
    fast94tracer
    fast94tracer is offline First Time Rider Arm chair racerNew to the board
    Join Date
    May 2007
    Location
    lancaster,ca
    --
    125
    im getting 130psi with a compression tester and the tester had a slow leak
    Reply With Quote Reply With Quote
  6. 06-07-2007, 09:59 PM #6
    ChrisD's Avatar
    ChrisD
    ChrisD is offline Roostin' Away Arm chair racerRoostin Away
    Join Date
    Aug 2002
    Location
    New York
    --
    1,098
    you can run 87 octane with that compression.

    lower octane = more power.

    I run VP C12 but I run 225lbs compression
    Reply With Quote Reply With Quote
  7. 06-07-2007, 10:50 PM #7
    1upfront's Avatar
    1upfront
    1upfront is offline Got The Holeshot Arm chair racerJust too addicted
    Join Date
    Apr 2007
    Location
    ohio
    --
    774
    The manual for the 81-84 recommends using 92-100 octane leaded fuel, also the compression pressure should be 156 + or minus 14 psi.
    Last edited by 1upfront; 06-07-2007 at 11:08 PM.
    Reply With Quote Reply With Quote
  8. 06-08-2007, 01:22 AM #8
    fast94tracer's Avatar
    fast94tracer
    fast94tracer is offline First Time Rider Arm chair racerNew to the board
    Join Date
    May 2007
    Location
    lancaster,ca
    --
    125
    ok and the compression is read by how many kicks?

    and i also did it on a cold engine i know its supposed to be done on a warm engine to get proper compression
    Reply With Quote Reply With Quote
  9. 06-08-2007, 01:28 AM #9
    Dangerous-UK's Avatar
    Dangerous-UK
    Dangerous-UK is offline New to the board Arm chair racerNew to the board
    Join Date
    Apr 2007
    Location
    England UK
    --
    27
    Depends what sort of gas the ignition timing is set for,or are you going to set the ignition timing to the type of gas your going to use !
    2 atc 70's (well ones a 160 now)
    1 atc 110
    1 atc 125
    Just bought another 70 well minus forks and engine!
    Reply With Quote Reply With Quote
  10. 06-08-2007, 02:12 AM #10
    fast94tracer's Avatar
    fast94tracer
    fast94tracer is offline First Time Rider Arm chair racerNew to the board
    Join Date
    May 2007
    Location
    lancaster,ca
    --
    125
    well i just figured out that i dont have the right carb and i know by looking at the mauals for the 85-86 250r and 350x that i dont have thos either
    so o dont know what i have and what floats to order

    also i did the compression check wrong as i stated before i did it cold and i also forgot to open the throttle wot so it is higher than i stated
    Reply With Quote Reply With Quote
  11. 06-08-2007, 08:18 AM #11
    _brad_'s Avatar
    _brad_
    _brad_ is offline First Time Rider Arm chair racerNew to the board
    Join Date
    Mar 2007
    Location
    Minnesota
    --
    102
    What about for the average 4-stroke 200cc trike? I have always wondered what I should be putting when I fill up... My trike is ALL STOCK.

    Any thoughts?
    Reply With Quote Reply With Quote
  12. 06-09-2007, 05:27 PM #12
    RedRider_AK's Avatar
    RedRider_AK
    RedRider_AK is offline Power User Teaching quads a lesson
    Join Date
    Sep 2005
    Location
    Lipetsk, Russia
    --
    2,824
    Quote Originally Posted by _brad_ View Post
    What about for the average 4-stroke 200cc trike? I have always wondered what I should be putting when I fill up... My trike is ALL STOCK.

    Any thoughts?
    Regular pump gas.
    I'm back in the USSR...
    Reply With Quote Reply With Quote
//ArrowChat Integreation Code //