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Technical Zone

Need Information on a Specific Part? Post Here!
1.3k Topics 11.2k Posts

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  • Suspension Related
    95 748
    95 Topics
    748 Posts
    L
    Hey i recently bought a dt125x and I need to replace the fork seals but can't find any information about the real size, many forums and sites have different mesurements so I figured the easiest would be to ask here

  • Exhaust Related
    60 550
    60 Topics
    550 Posts
    CalumC
    [image: 020dvoy.jpg]

  • Framework Related
    82 589
    82 Topics
    589 Posts
    CalumC
    Cheers @HOTSHOT-III

  • Wheel Related
    79 726
    79 Topics
    726 Posts
    mbmO8M
    Thanks so much, I managed to figure it out but Now I'm dealing with my own front brake problems haha

  • Electric Related
    250 2k
    250 Topics
    2k Posts
    S
    @Corswolds89DTR It won’t be a 1989 diagram you need. Look through the other years models till you find one that looks familiar…

  • Brake Related
    66 441
    66 Topics
    441 Posts
    CalumC
    Well are you sure it's beyond repair? I mean it has to be pretty bad for that to be the case?

  • Engine Related
    532 5k
    532 Topics
    5k Posts
    mbmO8M
    I’ve tried another cap ( an old one that came with the bike as the bike came with 2 boxes of parts) and it seams to be worse so I think that shows both caps are bad and the og one wasn’t as bad Thank you very much
  • declanD

    Rad caps aren’t universal?

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    0 Votes
    9 Posts
    875 Views
    declanD
    @NINJA not a clue but luckily it’s not a problem
  • B

    Bike vibrating when revved

    2
    0 Votes
    2 Posts
    559 Views
    CalumC
    Either the balancer shaft, the engine needs timing. Or the clutch hasn't been balanced. The clutch needs to be reassembled in the correct sequence. See my kickstart conversion guide.
  • D

    What is this plastic part in the carb called?

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    0 Votes
    4 Posts
    736 Views
    Louis-DT-WRL
    Other name for it is a jet baffle
  • Y

    Oil Questions

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    0 Votes
    40 Posts
    11k Views
    2
    Always used Silkolene Comp 2 which is best oil there is either premix or injector oil.. £38.90 for 4 Litres so £9.72 per Litres https://www.ebay.co.uk/itm/Silkolene-Comp-2-2T-2-Stroke-Motorcycle-Engine-Oil-4-Litres-4L/161276818881?epid=10017008607&hash=item258cd8f5c1:g:NEQAAOSwcwhVP4E0
  • B

    Disconnect oil tank?

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    0 Votes
    9 Posts
    959 Views
    declanD
    @glynn123 they can fail although it is pretty rare I think they have way more positives I’d never disconnect mine I wish all bikes came with an optional oil fed system
  • B

    Few problems with my dt125re

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    0 Votes
    15 Posts
    2k Views
    CalumC
    @bradt The system will incur a known internal resistence with itself, known as impedence. This can be measured. It should fall within a tolerable range, as described by the technical specification of the item. Compare your component against this documentation to ensure the item is within tolerance. Chances are, if it is, then the item is not faulty.
  • T

    Power valve issue

    35
    0 Votes
    35 Posts
    5k Views
    CalumC
    @thechompster And ignitech
  • D

    Stuck seized pivot bolt

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    0 Votes
    15 Posts
    2k Views
    FusedF
    On my first DT after several days of trying to remove the bolt, I eventually got it to budge by doing a continuous heat cycle on it, and going at it with a club hammer and drift. When you thinks it got to be hot enough by now...give it another couple of minutes with the blow torch.
  • B

    Ypvs cap broken

    2
    0 Votes
    2 Posts
    601 Views
    CalumC
    It'll need ally welding if you have the pieces, otherwise you'll have to get another one.
  • Glynn123G

    DT125 Front brake caliper bracket dimensions?

    4
    0 Votes
    4 Posts
    1k Views
    CalumC
    @glynn123 Only messing mate. Was on here though.
  • olliedtx12sO

    Ypvs barrel removal

    4
    0 Votes
    4 Posts
    844 Views
    Sgt Robuck 5S
    @olliedtx12s If you need to locate any specific parts click on this and I suggest getting a haynes manual Found on here Amazon
  • declanD

    What hearing yall running?

    24
    0 Votes
    24 Posts
    3k Views
    CalumC
    @finnerz89 One day for sure mate...one day.
  • FusedF

    5 wires to 3

    4
    1 Votes
    4 Posts
    968 Views
    FusedF
    Thanks Calum, I'll shelve that idea for now then..
  • declanD

    Does a rich pilot effect riding

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    0 Votes
    38 Posts
    5k Views
    Irongamer727I
    @declan
  • Glynn123G

    320mm discs that fit DTX Front hub?

    2
    0 Votes
    2 Posts
    704 Views
    CalumC
    Doubtful, but an adapter shouldn't be too hard to make. Just make sure you centralise the caliper over the disc.
  • declanD

    2 stroke timing “stator”

    12
    0 Votes
    12 Posts
    2k Views
    declanD
    @sgt-robuck-5 ahhh very far then
  • declanD

    General a/f adjustment

    3
    0 Votes
    3 Posts
    701 Views
    declanD
    @finnerz89 yes they are
  • declanD

    Carb settings help

    4
    0 Votes
    4 Posts
    785 Views
    declanD
    @oldman well it looked 40 years old and was visually worn out looked well used if I tried to ride the bike to set off I’d have to redline and ride the clutch then soon as I shift out of 2nd the bike would lose all power and come to a stop then would bog and stutter it seems better with the carb on the garden not tested the street yet
  • SpannersS

    3BN CDI

    4
    0 Votes
    4 Posts
    1k Views
    J
    Why not make adaptor/converter loom, between the cdi and the main loom, so you can connect everything up without molesting either part.
  • declanD

    Snorkel out flat power curve?

    4
    0 Votes
    4 Posts
    907 Views
    J
    Removing the snorkel affects the jetting, so jet accordingly. It can also decrese the low end a bit, as theres not much velocity through the carb when you whack the throttle open at low speed. IMO the airbox seems pretty restrictive, so removing the snorkel adds tons of air. You can be both rich and lean, as in lean in the midrange, and rich on the mainjet, or the other way around.