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General Discussion

A place to talk about whatever you want
609 Topics 6.0k Posts

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  • Please Introduce Yourself Here Before Posting!
    179 2k
    179 Topics
    2k Posts
    CalumC
    Here are the differences in the 3BN Cylinder head [image: 1483566896896-dt125rheads-diffrences.jpg] It'll be marked on the cylinder head. [image: 1663628447669-874e98a1-e604-4e06-9310-d20f77cae655-image.png] The 3BN head is interoparable with the 3MB head, but has a combustion ring which is said to adversely affect performance. Here is a video of the difference between a 4FU cylinder and a Belgarda 3MB00P cylinder. https://www.youtube.com/watch?v=P8okvTxe-Bs Here is a 3MB cylinder. [image: cylinder-1_medium3MB1131100-02_4baa.jpg] [image: 1663628477295-8e899a28-4514-4881-89ec-bfcc824ade10-image.png] You'll see the crankcases are stamped 3BN [image: 1663628512647-b054f520-0af7-4920-948f-cc532b8bbd25-image.png] For the most part you don't need to worry about it, it'll be rare that you'll find a DTR with a 3BN crank/cylinder and most of them will be 3MB cylinders. But it's just worth bearing in mind. There are variations in CDIs and Exhausts which affect the performance, but these are less important as there are aftermarket support that recitfies any loss in performance

  • This section is for members to talk about anything non-dt related. Please keep the theme and language clean to permit viewing in work.
    193 2k
    193 Topics
    2k Posts
    CalumC
    Normally, they just add a throttle stop to restrict the bike, so you can only open it 3/4s of the way. This is what a lot of the test centers do as it's easy then to unlock the bike to full power afterwards.

  • Post your jokes & funny things you find on the web in here.
    16 118
    16 Topics
    118 Posts
    HOTSHOT IIIH
    @Stevie-Wonder Thanks bud Greta (for that is her name as she's noisy, irritating, aimed squarely at the youth market and responsible for thousands of them bunking off school all over the world) cost me half as much as my '93 due to the mileage and had a thick layer of grime all over due to years of grinding commuting. I gave her a scrub with Jizer (several times) and this is what was underneath Here are the part #s for the toolbox and lid, bit pricey IMO and you'd have to get the lugs welded on to a non-e start frame. Be a nice touch if you were getting it powdercoated sometime though https://www.cmsnl.com/products/boxtool_55v2817301/ https://www.cmsnl.com/products/lid_55v2818500/

  • Blog posts from individual members
    15 138
    15 Topics
    138 Posts
    NINJAN
    @Minia Looks nice and beefy and she sounds cool with a deep roar!!! :grinning_face_with_smiling_eyes: :face_with_stuck-out_tongue_winking_eye: :thumbs_up_light_skin_tone:

  • Content Not Suitable for Work!
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  • S

    2001 DTr

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    CalumC
    @theportingmaster I mean, it's 20 years old so I wouldn't be too worried if it's not concourse. Espcially if you want to use the bike daily etc.
  • S

    Help needed...is this a dt125lc or dt125r?

    dt125r dt125lc help
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    S
    @HOTSHOT-III Thanks for the information mate.
  • S

    I have just bought a dt125r 1999 model. I'm mixing my own fuel. Can I put the same oil in my engine as I'm putting in my fuel tank?

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    S
    @markus-w Thank-you much appreciated. It has been 30 years since I had one!
  • S

    Dt125lc mk3 1986

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    S
    Where can I get the paint codes ? Mine is called raspberry red, it’s a flat red but when Googled I seen a dark red metallic so that’s not right cheers guys
  • J

    dt 125 lc mk 2

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    J
    @jimmyhutch thanks callum i have my own workshop and a few bikes just need some tech advice before i get going ....also a spare mk2 complete bike so one is going to be standard and the other one modified...all the best jh
  • R

    Is this a rare DT125?

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    R
    @brian-stephens True, the blue is also hard to reproduce, i got side panels reproduced a while back and red was ok but the blue stood out more. If your doing the whole bike you wouldn't notice it though
  • rking7888R

    Kickstarts

    dt125r
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    declanD
    On a stock bike it just doesent make much sense but on a modded bike it could be cool to have a non standard kickstarter to make the bike that bit more unique
  • rking7888R

    Ignition covers

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    S
    @rking7888 I’ve got one cause it was £5 and I wanted to try and fit it to my 88/89 engine, polished. Never got round to trying...
  • rking7888R

    Headlight stay (bracket)

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    rking7888R
    @spookdog lol thanks for the advice mate I've just finished fitting 2 now, probably stronger than the other side, zip ties fix all
  • rking7888R

    Yoke stem nut

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  • rking7888R

    Dt 125r 95 cnc levers

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    rking7888R
    Any one know what size the steering stem bolt is on a 95the dome top nut? Accidently come across some anodised blue ones but only have 04-06 defiantly become addicted to parts hunting lol
  • rking7888R

    Bar risers, Chain slider, levers

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    rking7888R
    @stevie-wonder. I've tried yz 125 std and rfx they work but have slight play which will destroy the spline, I have to wear boots as it my woods n greenlaner and the std one is too short, everyone is saying 85 Levers. But the yz apico says for 85 125 250 everything so not realy sure what to buy yet
  • CalumC

    Allen Millyard Videos...

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    Stevie WonderS
    @calum I actually love the guy man. I find his videos like a mechanic equivalent to watching Bob Ross I’d be curious to meet the chap in person he just seems so down to Earth and simple yet intelligent
  • CalumC

    Langen Motorcycles

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    CalumC
    @markus-w Yes absolutely. The SDR200 is a gorgeous machine.
  • B

    DT125R WHEEL OFFSET

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  • W

    4fu piston size?

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  • rking7888R

    Frame gaurds

    frame gaurds
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    NottsbikerN
    @rking7888 not sure tbh as they are different so no idea how close they are for this type of fit You could always make some yourself from some 3mm (or similar) aluminium sheet and attach to the rear brake MC bolts
  • M

    ou se procurer le Kit 200 Cm3 de BAracing pour TDR125 ?

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    declanD
    @nottsbiker yeah would be a fun bike
  • D

    Other bikes that use dtr parts

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    NottsbikerN
    Yamaha TZR125 Yamaha (Belgarda) TZR125R Yamaha TDR125 (Deltabox) Yamaha DT125X/RE Yamaha DT230 Lanza Yamaha DT200WR Yamaha WR200 Yamaha (Belgarda) TDR125 & TDR125R KTM LC2 & Sting Derbi GPR125 2T Sachs XTC125 Sachs ZZ125 Best thing to do is use the Fowlers of Bristol website to get the Yamaha part number for anything that you need and then to put this into Ebay, Google, CMSNL to see if its still available. Always worth looking for new prices first and then looking at second hand if you have to as they can sometimes be "ok" new.
  • K

    y1/y2 barrel

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    NottsbikerN
    @calum said in y1/y2 barrel: @nottsbiker No, the best barrel is the SP barrel. I've never tried the 4FU barrel but certainly would be interested. Yes I can imagine it is - good luck finding one though!