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Need help with g23lh build

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  • Need help with g23lh build

    I have a g23lh with a rocket key and a 1mm stuffer stroker rc crank case that's ported and a q-can with a stock walbro carb none adjustable when I get to high rpms it picks up fast then bogs at high speeds an I almost eat the floor almost every time any help I filed the piston skirt my first time having a stroker so I don't know what the problem is might be rings? I don't know any help

  • #2
    If it's a rotary valve carburetor it's running rich. This carbs tend to run too rich. DDM could hook you up with a hp kit to get full potential out of your engine!
    1996 Volkswagen Jetta 2.0l 8v Trek edition
    All motor GoPed SGSR460 (IN THE WORKS)

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    • #3
      Maybe try an rc coil. Just guessing but maybe the motor is revving out and falling on its face because of a timing issue? When you add a stroker and timing key a lot can change in how the motor will perform. Another guess is that the motor is just not getting enough fuel at the higher rpm and is flat lining. Normally you can put an LH carb on a g230 and it stops the motor from over revving and keeps it in that sweet spot.
      If it's not scary fast, it's not fast enough!

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      • #4
        Never ever run a ported motor with no adjustable carb. Not only is it worthless, it is potentially harmful to
        The motor. Buy an hp carb and report back. And take that rocket key out.
        *******Pedding since '02********

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        • #5
          Probably junk stuck on the steel mesh filter inside the carb

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          • #6
            if it bogs down at high speeds then you need to adjust the high speed jet on your carb. If your carb is non adjustable, you should buy an adjustable one because as someone else mentioned you should never run a ported motor with a non adjustable carb.

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            • #7
              Originally posted by carboy15 View Post
              if it bogs down at high speeds then you need to adjust the high speed jet on your carb. If your carb is non adjustable, you should buy an adjustable one because as someone else mentioned you should never run a ported motor with a non adjustable carb.
              I have a walbro 167a but I'm not good at tuning them I have tryed tuning it but I don't know what I'm doing I guess lol so I just run the plain jane carb no tune no problem an just my g230rc bottom end is ported that I have on my lh put the 1mm stuffer stroker in it an I filed the piston skirt but I dnt know if there is a certain way to file it or not? Its the first time I've filed a piston skirt myself it gets all the way to top speed then just seems like someone closed my choke on my carb then I have to let off of my throttle an it rides normal super bad on anytype of up hill I personally think my rings might be on there way out

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              • #8
                Originally posted by Paton View Post
                I have a walbro 167a but I'm not good at tuning them I have tryed tuning it but I don't know what I'm doing I guess lol so I just run the plain jane carb no tune no problem an just my g230rc bottom end is ported that I have on my lh put the 1mm stuffer stroker in it an I filed the piston skirt but I dnt know if there is a certain way to file it or not? Its the first time I've filed a piston skirt myself it gets all the way to top speed then just seems like someone closed my choke on my carb then I have to let off of my throttle an it rides normal super bad on anytype of up hill I personally think my rings might be on there way out
                If you don't know how to tune a carb you should look it up online. My recommendation for you is to fully tighten the jets and turn them out 1.5 turns. Thats a good baseline tune, and if you have trouble with that look up a video on youtube and that should help. And if you think your rings are on their way out you should replace them, but it doesn't sound like they'd be causing the problem. If it were me I'd put your adjustable carb on the engine (make sure its clean of course), try the tune I said, and see if it works any better. 2 stroke carbs can be very finicky and I've a ***** of a time with many, but if you spend some time tuning the low and high jets, you might solve your problem. I know that the Goped youtube channel has a very helpful video on tuning carburetors and you will get better at it with practice. Hope this helps.

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                • #9
                  Originally posted by dsport View Post
                  Never ever run a ported motor with no adjustable carb. Not only is it worthless, it is potentially harmful to
                  The motor. Buy an hp carb and report back. And take that rocket key out.
                  I have a walbro 167a I'm just horrible at tuning

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                  • #10
                    Originally posted by carboy15 View Post
                    if it bogs down at high speeds then you need to adjust the high speed jet on your carb. If your carb is non adjustable, you should buy an adjustable one because as someone else mentioned you should never run a ported motor with a non adjustable carb.
                    I don't have a adjustable carb on it

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                    • #11
                      I recommend just buying a wt-668, It was the easiest carb to tune. It picks up speed fast too!
                      1996 Volkswagen Jetta 2.0l 8v Trek edition
                      All motor GoPed SGSR460 (IN THE WORKS)

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                      • #12
                        Originally posted by The ped hoarder View Post
                        I recommend just buying a wt-668, It was the easiest carb to tune. It picks up speed fast too!
                        I have the 167a and 2-3 walbro wt603 an like 1-2 #668 I have heard the 167a is the best carb you can get for a lh

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                        • #13
                          Originally posted by Paton View Post
                          I have the 167a and 2-3 walbro wt603 an like 1-2 #668 I have heard the 167a is the best carb you can get for a lh
                          It works great on it, w/ correct billet mani on LH
                          sigpic
                          GSR40 TSi Pacsales Racer ADA HP @7/76

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                          • #14
                            Originally posted by Sasquatch Foot View Post
                            It works great on it, w/ correct billet mani on LH
                            I have the Rancho racing billet manifold

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                            • #15
                              Originally posted by StrangePower View Post
                              Maybe try an rc coil. Just guessing but maybe the motor is revving out and falling on its face because of a timing issue? When you add a stroker and timing key a lot can change in how the motor will perform. Another guess is that the motor is just not getting enough fuel at the higher rpm and is flat lining. Normally you can put an LH carb on a g230 and it stops the motor from over revving and keeps it in that sweet spot.
                              I can pick it up after I start it an it revs up like nothing with no bogging or any rev issues that's why I think my rings are bad cause it seems like I have low compression
                              Last edited by Paton; 12-13-2015, 01:56 AM.

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