Pablo's DR350

Discussion in 'Thumpers' started by Pablo83, Sep 14, 2010.

  1. Pablo83

    Pablo83 Sleep, Wrench, Ride

    Joined:
    Aug 20, 2008
    Oddometer:
    4,836
    Location:
    Woodland Park, CO
  2. Greg Bender

    Greg Bender Long timer

    Joined:
    Oct 22, 2007
    Oddometer:
    1,244
    Location:
    Cave Creek, Arizona, United States
    Very cool! Indeed, those come up for sale very infrequently. I hope you will document the install with a lot of good, detailed photos. I've been contemplating adding one of these for a while, now.

    Regards,

    Gregory Bender
  3. MrPulldown

    MrPulldown Long timer

    Joined:
    Aug 18, 2009
    Oddometer:
    3,590
    Location:
    Truckee
    The Jaggs version is quite different than the OEM. I was able to get my hands on an OEM on a little bit ago. But sold it to my buddy so he could run it on his DR.

    From the jagg installation instructions you cut one of the hoses and route the oil into the cooler. 100% of the oil goes to the cooler.

    The OEM has some weird "T" in it. I think that only a portion of the oil goes through the cooler.
  4. tntmo

    tntmo Been here awhile

    Joined:
    Jan 31, 2012
    Oddometer:
    535
    Location:
    San Diego, CA
    I have that same cooler on the 92 DR350 I recently picked up, I didn't even know it was on the bike until I was loading it into the truck. You will need to cut the oil line to run it to the cooler. I'm not sure how well it works since I don't have a temp gauge.
  5. Pablo83

    Pablo83 Sleep, Wrench, Ride

    Joined:
    Aug 20, 2008
    Oddometer:
    4,836
    Location:
    Woodland Park, CO
    Thanks for the info. I was going to try and find a set of OEM oil cooler hoses, but clearly that's not going to work. I think I might already have the Jagg installation diagram around here somewhere (or maybe that was for the XR650L). I'll have to look around.

  6. Pablo83

    Pablo83 Sleep, Wrench, Ride

    Joined:
    Aug 20, 2008
    Oddometer:
    4,836
    Location:
    Woodland Park, CO
    Is there a mounting bracket for it?
  7. Greg Bender

    Greg Bender Long timer

    Joined:
    Oct 22, 2007
    Oddometer:
    1,244
    Location:
    Cave Creek, Arizona, United States
    I've got the JAGG instructions here:
    http://thisoldtractor.com/gtbender/dr350.htm#gtb_jagg_oil_cooler_installation_instructions

    ...and a few small photos of the original cooler here:
    http://thisoldtractor.com/gtbender/dr350.htm#gtb_oil_cooler

    Hope this helps!

    Regards,

    Gregory Bender
  8. Pablo83

    Pablo83 Sleep, Wrench, Ride

    Joined:
    Aug 20, 2008
    Oddometer:
    4,836
    Location:
    Woodland Park, CO
  9. tntmo

    tntmo Been here awhile

    Joined:
    Jan 31, 2012
    Oddometer:
    535
    Location:
    San Diego, CA
    Just like the Jagg manual says, it's mounted with two large hose clamps to the downtube. Not elegant, but it works. I don't care for cutting the hoses and using fittings with hose clamps though. I'd like to have custom hoses with AN fittings built up for it.
  10. Pablo83

    Pablo83 Sleep, Wrench, Ride

    Joined:
    Aug 20, 2008
    Oddometer:
    4,836
    Location:
    Woodland Park, CO
    I got out on the trails some today. I hit some decent jumps and the bike did not cut out, so the new coil has fixed that problem. :clap

  11. Pablo83

    Pablo83 Sleep, Wrench, Ride

    Joined:
    Aug 20, 2008
    Oddometer:
    4,836
    Location:
    Woodland Park, CO
    When I'm riding at full throttle for more than about 10 seconds the bike starts to loose power, kind of like it's running out of fuel. It never completely dies on me, but power is definitely down. Fuel flow from the petcock is good, so I'm not sure what else could cause this. Suggestions?
  12. shearboy2004

    shearboy2004 KIWIINUSA

    Joined:
    Jun 28, 2007
    Oddometer:
    4,446
    Location:
    Ft Collins ,Colorado
    Mate I know your carb is all clean and the little crap is taken care of so I would try going 1 up on the main jet .
  13. Pablo83

    Pablo83 Sleep, Wrench, Ride

    Joined:
    Aug 20, 2008
    Oddometer:
    4,836
    Location:
    Woodland Park, CO
    Sounds logical. I'll give it a try.

    I've got the pumper carb and currently have a 132 main. What do you run?
  14. shearboy2004

    shearboy2004 KIWIINUSA

    Joined:
    Jun 28, 2007
    Oddometer:
    4,446
    Location:
    Ft Collins ,Colorado
    Remember mine is a 450 so I am now up at 145 I believe .

    Just go up one step and if it makes it better try going up again till it flattens out .If it gets worse on the first step up go one down from what you have in it now .

    Shit I forgot yours is now a 440 so you should be similar to me in jetting .
  15. Pablo83

    Pablo83 Sleep, Wrench, Ride

    Joined:
    Aug 20, 2008
    Oddometer:
    4,836
    Location:
    Woodland Park, CO
    I've figured out the problem. When Airvent was here last year I was jealous of how incredibly quite his bike was. His intake/exhaust is bone stock down to the airbox snorkel. My bike is quieter than probably 70% of the other bikes I cross on the trails, but I'm always looking for a higher ninja factor.

    I found an unmodified airbox on eBay and put it on my bike last winter. The sound difference was noticeable, but it did not make by bike near as quite as Airvent's. At this point, the only things different between my intake/exhaust and Airvent's were the carbs (pumper vs CV) and my 440 big bore kit. I assume the carb makes no sound difference. I'm really surprised the big bore kit would have this much impact on noise.

    Stock airbox opening with rubber snorkel sitting on the side:
    [​IMG]

    Anyway, it occurred to me that maybe the airbox was causing my WOT issue so I removed the side number plate and filter access panel to create a giant hole for the engine to breath through and took the bike for a spin... no more WOT issues, but the bike was very loud. So I went home and re-installed my modified airbox and everything is back to normal.

    So what was happening was the stock airbox was not delivering enough air at WOT and creating extra manifold vacuum pressure. The excess vacuum was sucking in too much fuel, to the point that the engine would misfire.

    My modified airbox back in the bike:
    [​IMG]

    There is also a noticeable power difference at all RPMs with the stock vs modified airbox.
  16. Pablo83

    Pablo83 Sleep, Wrench, Ride

    Joined:
    Aug 20, 2008
    Oddometer:
    4,836
    Location:
    Woodland Park, CO
    I started installing the oil cooler yesterday. The oil cooler did not come with the barb adapters that Jagg originally shipped with it and that was fine with me because I did not like that setup anyway. I wanted a cleaner installation.

    I cut up the oil line and welded some AN style connectors to the metal pipe. I’m really not familiar with these connectors so I wanted to take it to a hose shop that could give me some suggestions. There’s a place in Colorado Springs called Whistler Bearing that I’ve used a few times and they have a huge wall full of blue and red anodized aluminum hose fittings, so I figure this is the right place. This morning I mount the cooler, remove the gas tank and take the bike and all my parts to the hose shop.

    One of the oil lines comes out from below the engine so I push the bike into the warehouse and I lay it on its side so all the oil lines can easily be seen. As I’m doing this, the guy looks at me with a panicked look as if I’m about to give birth and I’m expecting him to deliver the baby. Then he start with “I’m not allowed to do any engineering. I’ve been specifically told this. I can make hoses, but I’m not allowed to even measure anything.”

    I don’t see this as a problem because I know what size oil line I want and, as it turns out, I’m qualified to operate a tape measure. All I want from this guy is for him to look at what I’m doing and try to sell me some expensive fittings that will get the job done. It takes some convincing, but finally he decides to show me what kind of flexible oil lines they have.

    As we’re walking through the warehouse one of the managers comes running up behind me yelling about my bike leaking shit all over his floor. I apologize and head back to the bike to see what’s going on. I’m confused because I’ve removed the gas tank and drained the engine oil, and it’s not like the bike has a radiator, so what could be leaking? As we’re walking back he starts grilling me: “Why’s your bike in the warehouse? How'd you get it in here?”

    “I pushed it through the big overhead door at the entrance.”

    “Does the bike even run?”

    The man can be forgiven for not realizing the oil lines are incomplete, but how he missed the non existent gas tank is beyond me.

    Maybe he thought I was homeless and trying to repair my bike in his warehouse and wanted me to get out. As I pick up the bike he realizes that my bike is not leaking, it just kind of looks that way because I've laid the bike down on a big stain on his floor.

    At this point I start pushing the bike out of the shop to take it to the other custom hose shop, but I’ve never been to the other shop and I quickly realize that if they don’t have what I need I’ll just be right back here and I’ll look like an idiot. On top of that, I need the bike for a Moab trip on Friday so I put the kickstand down and with a little more prodding we eventually found what seems to be a good solution.

    [/RANT OFF]

    [​IMG]

    [​IMG]

    Initial results are good. I took it for a quick spin on the Hwy and a brief steep trail section. After the steep section the engine temp was 215 deg where it would normally have been much closer to 250 deg. I might extend the skidplate up to protect the oil lines, but overall I think it's a pretty solid installation.
  17. Pablo83

    Pablo83 Sleep, Wrench, Ride

    Joined:
    Aug 20, 2008
    Oddometer:
    4,836
    Location:
    Woodland Park, CO
    Sherman did great in Moab. The oil cooler generally kept the engine 35 deg F cooler than without it. The only time the temp needle went into the red (250 deg F) was in the sand dunes and that type of riding is real rough on engines. There is a very small oil leak, but it was not enough to change the oil level on trip. I think it is coming from one of my welds, so it will be easy to fix.

    Top of the World Trail, Moab, UT:
    [​IMG]
  18. Pablo83

    Pablo83 Sleep, Wrench, Ride

    Joined:
    Aug 20, 2008
    Oddometer:
    4,836
    Location:
    Woodland Park, CO
    SteveO put together a great video of the Moab trip...

    <iframe width="560" height="315" src="http://www.youtube.com/embed/Vq1rTnEthSU" frameborder="0" allowfullscreen></iframe>
  19. Hotmamaandme

    Hotmamaandme Wishing I was riding RTW

    Joined:
    Jan 10, 2006
    Oddometer:
    2,724
    Location:
    Gardnerville NV
    Yep good video:clap
  20. rubberband

    rubberband Will ride for tacos

    Joined:
    Jul 16, 2010
    Oddometer:
    429
    Location:
    Michigan
    good stuff, more info on your trip? routes? accomodations? etc