GPX TSE250R 2T Enduro

Discussion in 'Thumpers' started by Navin, Dec 3, 2017.

  1. Glenn247

    Glenn247 Long timer Supporter

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    Has anyone here added oil injection to their 2021.5 TSE, or considered doing it?

    How difficult would the installation be if GPX made all the parts available, which they likely can?
    Navin likes this.
  2. Navin

    Navin Long timer

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    5/10 difficulty job. Pull the clutch cover and add the drive gear/shaft, then the pump goes outside the cover on that shaft, route the hoses, pop an oil tank on the rad, carb might need a port added to take oil in. Id probably just buy a low hour injected one if its a deal breaker. Carrying a few ounces of oil isn't that much of a pita either. Toss a few mini bottles in a fender bag.
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  3. Glenn247

    Glenn247 Long timer Supporter

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    Thanks for that rundown, Brother...

    So how would the TSE motor handle being given more or less oil than what is ideal when someone is pouring two-smoke oil into the tank at gas stops and not getting the doses quite right, if you catch my drift...

    My thought is, if I am riding it as a dual sport, I would prefer to oil inject, which is one primary reason I bought a 2019 TSE...I've mentioned this to Gary in a past email, although I acknowledge I am in a minority of TSE customers...

    Thoughts on the question above and in general?
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  4. Navin

    Navin Long timer

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    My $00.02, the TSE tolerates such a wide range of jetting that if you arent trying to ring its lung out it will do fine. As a DS Id not worry much as long as I guessed the oil between 20:1 and 50:1, and maybe even higher like 70/80:1 with Amsoil 100:1 Dominator oil. I have a bottle I can fill to the brim that gives me 44:1/gal and thats what I ran in mine. Id think youd always guess rich on oil as you dump in a bottle, then add a gallon, repeat. Close enough IMO.
  5. Bitter

    Bitter Been here awhile

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    Ended up with 45/155 pilot/main jet combo. The 40 pilot GPX sent me was useable. Totally clogged up with something I couldn't get out. I tried a 38 pilot, but the throttle cable was unscrewed from the carb body cap, which I didn't know when I started it. Thought it was too lean because I couldn't get the idle down. Screwed the cable back into the carb cap and changed the jets to the 45/155 combo which worked well. Much better low end response, higher revs up top and a good idle. I think the air screw is about 1.5 turns out. I think a 40/155 would be ideal for the elevation I ride(6500'-9000'}. If I get a wild hare up my ass, I might try the 38 pilot some day.
  6. offroadtoys

    offroadtoys Been here awhile Supporter

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    36F7694A-FE5B-4B57-B872-44D08B8A8C1B.jpeg Finally got a chance to to tear into the TSE this week. It had no fluids and was just slapped together from the crate for display so I took this opportunity to dig into it and go over a few things:

    B04B2F95-A80C-4753-ABE5-7826C9DC1942.jpeg
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  7. offroadtoys

    offroadtoys Been here awhile Supporter

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    Wanted to grease all the linkage and swingarm bearings, remove the 5 lbs of springs on all the coolant hoses, remove the thermostat and plug the bypass hose.

    E2303362-2722-4175-953B-BD6EC178ACB0.jpeg 4BC4425D-2689-4158-ADD6-89CD56186599.jpeg
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  8. offroadtoys

    offroadtoys Been here awhile Supporter

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    Already changed the shifter, and have to lube all the cables before adding a few more goodies!

    052AA1E3-6232-44C8-BE60-CC32BEC56C9B.jpeg

    I have new Renthals to swap on because they already have the threaded inserts for my hand guards. I’m taking this time also to go through the carb and start with a known good sea level jetting spec (thanks Navin ).

    (edit: found out the Race carb for '19s is not the same carb as the '21.5s)
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  9. offroadtoys

    offroadtoys Been here awhile Supporter

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    Couple more parts on order will have to wait for next time. I did find this oddity though. Maybe it’s been talked about.

    3B13DC1F-8A0A-45D7-9CF2-00E1B3213642.jpeg

    This being a ‘21.5 with no OI, there is an open hole on top of the injector pump case that must have had hoses or cables ran through it. Seems odd there was no rubber plug or anything. So I sealed it off with silicone for now.
    It’s an empty chamber with a small drain but there was no sense letting muddy water get in there freely to corrode. Here’s my temp fix:

    1FED5F0E-EA86-46E1-AF6C-556B83D8F588.png
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  10. offroadtoys

    offroadtoys Been here awhile Supporter

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    First quick trip for a shakedown run. Got 11 miles on it now . :jack
    99092D7B-0372-4781-AAE1-37D28A97F002.jpeg 9B955B14-15B0-402A-80B4-35B58287DC96.jpeg
    Jeremy K, Lutz, Navin and 1 other person like this.
  11. offroadtoys

    offroadtoys Been here awhile Supporter

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    Working in PA for the month and look forward to exploring the area.

    AFB291A2-C124-4ADA-88A2-1AD87FBDF97A.jpeg 5C0915E1-1BD6-401C-9F4C-20AAA83C2CFF.jpeg
  12. Yinzer Moto

    Yinzer Moto Long timer Supporter

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  13. offroadtoys

    offroadtoys Been here awhile Supporter

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    Staying East of Pittsburgh. Darlington , PA. Know of any trails in the area? Know about Wellsville, Hillsville, and Mines and Meadows. Would love to find some single track.
    Navin likes this.
  14. offroadtoys

    offroadtoys Been here awhile Supporter

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    I now see you’re from Pittsburgh. Message me if you would like to share any info.
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  15. Yinzer Moto

    Yinzer Moto Long timer Supporter

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    Wellsville has a ton of singletrack. This is a good time of year to find it as in a couple months, it will be difficult to find.

    The further out from the city you get, the more it is just all quad trail and singletrack is limited. The closer to Pittsburgh you get, the more singletrack you will find. Almost every green patch of woods you see on Google earth, has trails in it, unless it is a county/city park.
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  16. offroadtoys

    offroadtoys Been here awhile Supporter

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    Thank you!
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  17. modette

    modette Rider

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    Funny the new one I got for my 2021.5 was upswept enough but was too long, easy to fix I just chopped off an inch.
  18. Bitter

    Bitter Been here awhile

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    My replacement for my 2021 didn't fit very well either. Original had a leak in one of the welds. They replaced it for free. But like I said. The new one didn't fit very well. I got it on, but couldn't use the tab mount on the front. Holes didn't line up
  19. gustavobomfim

    gustavobomfim n00b

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    you have to remove about 4 cm from the end of the curve to align the fixing holes

    Attached Files:

  20. Bitter

    Bitter Been here awhile

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    So, if I understand your statement. I have to cut the pipe in half, remove 4cm, and weld it back together. Meh. It's tight enough for me and works fine.