New and improved KTM690 WUNDERFEST

Discussion in 'Thumpers' started by crankshaft, Sep 6, 2011.

  1. crankshaft

    crankshaft Guns are for pussies

    Joined:
    Aug 12, 2004
    Oddometer:
    14,031
    Location:
    Burlingtron,VT
    My wild ass guess was correct, 61hp at the rear wheel at 7500 rpm
    Linear curve, right to 7500! Now its time to ride it in anger for a bit and make sure everything is good!
  2. Aaron from Texas

    Aaron from Texas Been here awhile

    Joined:
    May 3, 2010
    Oddometer:
    491
    Location:
    Texas
    Post up some fuel tables from the 'squirt system, if you can... I'd be interested to look at that.
  3. cantweallridealong

    cantweallridealong Adventurer

    Joined:
    Oct 13, 2011
    Oddometer:
    23
    Location:
    I am where I am
    Hi all

    i am currently traveling south america on a KTM 690 Enduro and have a problem..

    engine noise ticking very rapidly turned into a full melt down from the bike

    i am some what mechanically inclined so i set to work.. to try to see what the hell had happened..

    I was quite sure that this was a valve issue. took off the head to reveal a super f**ked Valve Rocker Bearing that has stripped it’s self and seized.. also damaging the Valve Cams too..

    As i can tell there dos not appear to be any other damage done to any other parts..

    my questions for anyone who can help is would this have done any other damage to the motor... i.e. the piston, cylinder etc... this is not an easy thing too tear down to check..

    and other than ordering a new Rocker Arm and Valve Cam what else does anybody recomend i should replace with these..


    many thanks

    James

    [​IMG]


    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
  4. Bigbugberg

    Bigbugberg Meatbucket Supreme

    Joined:
    Feb 15, 2010
    Oddometer:
    470
    Location:
    1313 Mockingbird Lane
    Aw man, that aint pretty...

    I would verify the oil pumps are in spec in terms of pressure and volume.

    No use replacing parts if'n the oil ain't gettin there.
  5. Mini Trail

    Mini Trail n°°b

    Joined:
    Jun 27, 2007
    Oddometer:
    2,411
    Location:
    West Tennessee
    When my rockers went bad I did some searching and discovered that it wasn't uncommon. I note that you have the newer style rockers not what came with my 2009. On mine one shaft came out and I was able to push the other one out with my finger plus the needle bearing came apart. Yours just looks ceased.

    I would replace both rockers.

    What is that red oil you are using?
  6. Albie

    Albie Kool Aid poisoner

    Joined:
    Mar 31, 2004
    Oddometer:
    13,883
    Location:
    NWA
    LOL, so the more I tear into my motor the more I find I need to do. So new piston to go along with the new rings, and of course the cylinder needs to be worked over. If the cylinder is worn past spec, then it's going to have to be sent off.

    I did pick up a used cylinder and piston with rings with 4.5K miles on Ebay for $100. Figure I'll toss that on for now, and next time I need to do a top end just swap cylnders and pistons.
  7. Mudguts

    Mudguts when in doubt GAS IT

    Joined:
    Jan 16, 2006
    Oddometer:
    2,465
    Location:
    Some were in , lostralia

    So your sending it off to be bored out too 728cc:evil
  8. Albie

    Albie Kool Aid poisoner

    Joined:
    Mar 31, 2004
    Oddometer:
    13,883
    Location:
    NWA
    Hmmmm :hmmmmm Might have to look into that. :D
  9. thorinoakenshield

    thorinoakenshield ya mo be there

    Joined:
    Dec 22, 2011
    Oddometer:
    454
    Location:
    Yeah, I read about bad rockers in the supermoto forums.
    Somewhere in here:
    http://www.supermotojunkie.com/forumdisplay.php?43-KTM&order=desc
  10. crankshaft

    crankshaft Guns are for pussies

    Joined:
    Aug 12, 2004
    Oddometer:
    14,031
    Location:
    Burlingtron,VT
    Does anyone know anything about the BIg bore kits for the 690? Char on SM junkie did a big bore mod to his 690sm using a stock comp JE piston. I'm interested in finding out more info. Wasn't it 692cc?
  11. Mudguts

    Mudguts when in doubt GAS IT

    Joined:
    Jan 16, 2006
    Oddometer:
    2,465
    Location:
    Some were in , lostralia
    Have a look here



    http://www.gw-racing-parts.de/index2.php?view=tuning&HID=21&type=690&von=2006&bis=2010&lan=en


    KTM 690 bigbore - tuningkit. New camshaft stage 2. Cylinder boring for 104 mm and new LFC plating. CP forged pistonkit of the extra class 104,00 mm, + 2 mm oversize, 717 cc, compression 12,5 : 1. Delivery including the suitable piston rings, wrist pins and wire locks.Cylinder head porting inclusive radius valve seat cutting. Inclusive shot peen of the combustion chamber and channels. Including crankshaft balancing.
  12. crankshaft

    crankshaft Guns are for pussies

    Joined:
    Aug 12, 2004
    Oddometer:
    14,031
    Location:
    Burlingtron,VT
    I was hoping for something made here in the good ole US of A. 220, so after the duty, taxes and exchange.... $5,000,000 US dollars:lol3
  13. Albie

    Albie Kool Aid poisoner

    Joined:
    Mar 31, 2004
    Oddometer:
    13,883
    Location:
    NWA
    Heh, I was just looking through that. I think it was 699 cc.
  14. Albie

    Albie Kool Aid poisoner

    Joined:
    Mar 31, 2004
    Oddometer:
    13,883
    Location:
    NWA
    Char got his stuff here. The piston was a JE from Engine Dynamics.
  15. Mudguts

    Mudguts when in doubt GAS IT

    Joined:
    Jan 16, 2006
    Oddometer:
    2,465
    Location:
    Some were in , lostralia
  16. crankshaft

    crankshaft Guns are for pussies

    Joined:
    Aug 12, 2004
    Oddometer:
    14,031
    Location:
    Burlingtron,VT
  17. DirtJack

    DirtJack Adventurer

    Joined:
    Aug 12, 2007
    Oddometer:
    2,837
    Location:
    San Antonio, Texas
    Those are good numbers. Crankshaft what year is this bike, 2012 with an actual 690 cc or earlier with 654 cc?
  18. crankshaft

    crankshaft Guns are for pussies

    Joined:
    Aug 12, 2004
    Oddometer:
    14,031
    Location:
    Burlingtron,VT
    09 654cc

    AFR is 13 across the board and I'm running it in open loop for now to make sure the fueling is good. Don't forget, 61 was with the insert still in the exhaust.
  19. LukasM

    LukasM Long timer

    Joined:
    Nov 15, 2006
    Oddometer:
    5,474
    Location:
    On a RTW ride - currently touring the U.S.

    You are not paying any of that shit for a shipment under $1000, at least not if it's mailed.

    €220 is $285, shipping should be about $30 or so. I'd definitely prefer a proven piston designed by Emil Grossewächter (he is good and has a lot of experience with 690s) and manufactured by CP over a JE experiment....
  20. crankshaft

    crankshaft Guns are for pussies

    Joined:
    Aug 12, 2004
    Oddometer:
    14,031
    Location:
    Burlingtron,VT
    Thanks for the info Lukas, I agree. That price isn't bad actually and I tend to get stuff from Europe faster than I do from California:lol3