Drz400 Thread

Discussion in 'Thumpers' started by Britmick, May 4, 2007.

  1. MotoTex

    MotoTex Miles of Smiles

    Joined:
    Jul 6, 2009
    Oddometer:
    1,944
    Location:
    Tool Shed
    I found two computer fans laying around at work. Put neoprene pads on the corners (cut from freebie Motorcycle Superstore mouse pads) and zip-tied one fan to the back of each radiator (through the fins and around a pipe).

    Got power from the headlight circuit, routed through a handlebar switch left over from the DS kit (and which I never turn off) and haven't boiled over since.

    The fans are very inexpensive, so even if I lose one to water or wear it is cheap and easy to replace.

    They are holding up well after riding much single track, dual sport, and in the rain once.
  2. jimmy2020

    jimmy2020 limpiador de ventanas

    Joined:
    Jul 12, 2005
    Oddometer:
    986
    Location:
    BERTHOUD, COLORADO / SANTA TERESA, CR
    the previous owner did lots of alterations to the bike and I thought he might have removed the fan before I bought it.
    I'm just concerned because if the bike idles for a minute after riding, it starts spewing water.
    I guess if there was never a fan, then I should not even be concerned? I"ll just make sure I don't let it sit long while running.
  3. SuchesRider

    SuchesRider Just Do It!

    Joined:
    Dec 18, 2006
    Oddometer:
    1,736
    Location:
    North Georgia
    I am having a problem with my 08 DRZ400S. I upgraded the carb to the FCR39 model and I think I might be having a problem with the vacuum line/petcock. The bike has been running really rough, I have been getting bad gas mileage, and the engine periodically cuts off while riding. The vacuum line is not kinked or loose. This weekend I rode it and had all of the above symptoms, but decided to change the petcock setting from ON to PRI (bypassing the vacuum line). The engine appeared fine on PRI.

    Have any of you heard of anything like this before? What is the impact (at all) of leaving the petcock on the PRI setting and bypassing the vacuum line? What could be wrong with the vacuum process?

    I did some research on the internet about this issue, but did not find any definitive. However, a couple of DRZ owners mentioned that they were getting gas in the oil. So today I emptied the oil and it is very liquidy and smells like gas.

    Not sure what to do next.

    Any suggestions?

    Thanks. SuchesRider
  4. ptgarcia

    ptgarcia Huh?

    Joined:
    Apr 26, 2009
    Oddometer:
    509
    Location:
    Fontuckey, CA

    Sounds like the petcock has leaked and allowed fuel to infiltrate the oil, not an uncommon occurance. Most people replace the vacuum petcock with a manual unit.
  5. dasvis

    dasvis Been here awhile

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    Nov 29, 2008
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    536
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    Oregon
  6. jackpiner57

    jackpiner57 Moto-Racks.com

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    Northeastern Vermont
    Thanks numbers, I think that's just what I'll do. I feel that since they have rounded corners and are a soft flexible plastic, I'm not too worried about them breaking a leg.

    I'm starting to feel less dorkish already.:razor
  7. marine_mike

    marine_mike Banned

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    Apr 30, 2012
    Oddometer:
    315
    Location:
    Mount Clemens, MI
    This is a very important point. I have the clarke tank and the aftermarket non vacum petcock with inline filter. I left it in the on position with the choke off when I parked it for a few hours. There was fuel EVERYWHERE!
  8. Mike_drz

    Mike_drz Banned

    Joined:
    Jul 17, 2012
    Oddometer:
    401
    Location:
    somewhere near the beach
    the floats in your guys fcr39 may be jam :1drinkthat's what happen when fuel level always stay high in the carb
  9. MotoTex

    MotoTex Miles of Smiles

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    If it is losing coolant, it is a problem. I've had my 2000 E since new and coolant loss has always been an issue, until I spent a very little bit of time and less money than the cost of a jug of Engine Ice to add the two fans.

    If you think that you will never be riding slow, or stopped on a trail waiting for the bike in front of you to clear something, or find yourself in traffic at a stop light, then leave it as it is. Otherwise, I'd suggest you go to Goodwill, a geek friend, or an electronics supplier and get at least one, maybe two fans and do this easy mod.

    My bike has never put a drop of coolant in the reservoir since adding the fans. That is peace of mind, on the cheap. :deal
  10. JoCo

    JoCo Adventurer

    Joined:
    Mar 7, 2009
    Oddometer:
    28
    Location:
    Orland Park, Illinois
    Grabbed too much front brake going into a corner and dumped the DRZ over, lost the left mirror.
    [​IMG]
    Was considering getting a pair of double take mirrors.
    http://www.doubletakemirror.com/
    Anyone else have any other good suggestions on aftermarket mirrors? :ear
  11. 4TooMany

    4TooMany Been here awhile

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    Aug 23, 2011
    Oddometer:
    380
    Location:
    Ann Arbor
    I highly recommend the Doubletake mirrors. In fact, I have a new bike coming tomorrow, and that will be one of the first mods I do. I've had great luck with 'em.
  12. threadkiller

    threadkiller Semi-feral Pappy

    Joined:
    Jul 29, 2007
    Oddometer:
    1,797
    Location:
    Middle Tennessee
    I have a moto-science mirror.

    Love it. It's durable, it's easy to stow away, and it's steady.
  13. HellSickle

    HellSickle Scone Rider

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    Sep 19, 2005
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    Fort Collins
    Or......

    Use a series of sockets or other tubular spacers, washers, and a long bolt to drive out the spacers.
  14. Jon B.

    Jon B. Been here awhile

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    Apr 9, 2010
    Oddometer:
    585
    Location:
    Rice County, Minnesota
    My son and I both ride 'E' models. Neither of ours has boiled over. On a ride in the Minnesota woods, one rider had a Hnda XR650 that constantly boiled He'd take off whenever we crossed a road to get air through the radiator.

    The first afternoon, it was 90F and we were stop & go on a tight trail; hills, sand, trees, etc. No problem.

    Perhaps we're just lucky?

    Jon
  15. Ogre_fl

    Ogre_fl Long timer

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    Cook Bayou, FL
    I have put a couple of sets of the moto-science mirrors on a few bikes.
    They are OK and I do like their adjustments, but that pivot joint is the weak link on these and I have broken 2 of them.

    I will try doubletake mirrors when I break my next one.
  16. MotoTex

    MotoTex Miles of Smiles

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    It is likely the climate may have a lot to do with it. As well as riding style.

    Higher average annual temps down South certainly play a part with the overheating I have experienced. Though I have boiled it over riding at 9000ft. ASL in 70 degree weather, climbing long trails up the side of the mountains.

    It wasn't something that happened all the time, just often enough over the past dozen years for me to consider it an issue worthy of a solution.
  17. Ogre_fl

    Ogre_fl Long timer

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    Cook Bayou, FL
    They did not break due to front/back rotation about the perch, they broke where they bottom out at the folding pivot joint.
    When full open any decent hit from the top snaps them.
  18. jaumev

    jaumev Long timer

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    Jun 5, 2011
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    Barcelona
    This ones look great.

    I have the Moto-science ones in my previous GSA and now in my Super Tenere and work great. I bought it in Touratech.

    I’m the same, doing enduro with KTM’s and other brands boiling and my simple DRZ-E never did.
  19. threadkiller

    threadkiller Semi-feral Pappy

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    1,797
    Location:
    Middle Tennessee
    Any decent hit will break an extended mirror. The MotoScience folds away so you can mitigate that risk.
  20. Rainshadow

    Rainshadow Been here awhile

    Joined:
    Oct 18, 2010
    Oddometer:
    370
    Location:
    Bend, Oregon
    Great minds think alike...found an old piece of all thread, some washers, a couple of big sockets for backing spacers and voila! 2 or 3 turns and the dogbone spacers popped out. The DRZ is now back at stock height and it feels much more stable and not nearly as cramped.

    Thanks for all of the advice!