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St0fxxx

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Posts posted by St0fxxx

    DT125R '89 Engine Number

    in The Bar

    Posted

    Hi guys,

    Anyone out there with an 89 DT125R which they know still has the original block in it. I've just checked mine and it has 3MB00 on it. I cant find anything on tinterwebz that says this is right (in fact things that say its wrong).

    I need to do the top end and know that the piston sizes differ 88-89 (56.40mm) and 90 onwards (56.00mm).

    Then i guess then ive gotta see if its already been bored total PITA getting a 2nd hand bike, i wanna know everything :)

    Thanks in advance guys

    $t0F

    Mikuni TM28SS - 89 DT125R?

    in The Bar

    Posted

    Yeah i've read about the oil too. I was going to soak them in the oil i drain from the engine, do you think that'll be ok? They're carbon friction plates so im not even sure if you need to soak them, i guess i'll just have to wait for them to arrive. I just cant stop thinking about this sort of thing once its in my head :eusa_think: I guess being prepared isn't a bad thing.

    Thanks for the advise Kev, you've been very helpful +1.

    Mikuni TM28SS - 89 DT125R?

    in The Bar

    Posted

    Nice one thanks mate, I bought one of those tools too. I've read the haynes book o' lies and it wasn't (surprisingly) very informative. I've bought a kit which comes with new friction, metal plates and springs, do i still need to worry about the 'lug' location? Or will it be in the instructions with the kit do you recon?

    cheers

    Mikuni TM28SS - 89 DT125R?

    in The Bar

    Posted

    It is a TM28SS and is not a CV Carb in case anyone else wanted to know.

    So I've now got all the bit to make it faster, then my clutch starts slipping :eusa_doh: . Theres a new clutch kit in the post, anything i should be aware of when changing the clutch?

    ta

    Mikuni TM28SS - 89 DT125R?

    in The Bar

    Posted

    Hello Peeps,

    Long time no post. My bike is running really well, now I have sorted out the compression (silencer had a crack in it).

    Now thats she's up and running properly I'd like to modify it a little more. I've got some Boyeson reeds and a ramair pod filter in the post. I'm planning on re-jetting too obviously but wanted to know a little more about the carb in my bike first. My research says its a Mikuni TM28SS but I cant find out whether this carb is a CV (Constant Velocity) carb or not or even if its the right carb at all!??!

    Do any of you guys know?

    Cheers :)

    $t0F

    New chain, feels like something is slipping?

    in The Bar

    Posted

    hello again chaps n chapesses

    ive just fitted a new pair of sprockets an a new chain. When im riding in the lower gears and the power band kicks in it feels like something is slipping, the bike judders well more the back wheel.

    ive double checked and everything is tightened back wheel front sprocket etc. The chain is tight/loose enough i think.

    Any ideas what it might be?

    Thanks in advance :)

    How to tell if my engine has been swapped

    in The Bar

    Posted

    Thanks for the help guys. my engine number is IN23458 (I think, grabbed it before reading here and might have got the wrong one, it was behind the gear lever EDIT: its wrong :()

    Its obvious because when I have looked at purchasing one the 89 has 56mm and the later models have 56.6mm. How are the oil pump covers different?

    How to tell if my engine has been swapped

    in The Bar

    Posted

    hello peeps

    When I bought my 89 DT 125r the guy said that they guy before him had swapped the engine for a 2002 engine.

    Im looking to do the top end on it but obviously the piston sizes differ from the original 89 engine and the newer ones.

    Is there an easy way to see if the engine is different to the original (with taking the head off and measuring the piston).

    I use this bike everyday as it is my only mode of transport so i need to keep the downtime to a minimum to enable me to get work etc. I would like to be able to order all the parts and do it all at once.

    Could i take the head off measure the piston and then put it back on with the original gaskets or would they need to be replaced every time you take the head off?

    Cheers

    De-Coke solution?

    in The Bar

    Posted

    Premix - add the pearls/crystals/whatever to water, NOT the other way round - it's an exothermic (heat generating) reaction, so you want a large body of water to soak up the heat created. Don't they teach chemistry at schools these days?

    The pipe will be OK - it's either mild or stainless steel so will be unaffected by the caustic.

    Cheers bud...im sure they did teach me chemistry but i wasn't there for most of it :D

    De-Coke solution?

    in The Bar

    Posted

    take great care with the caustic mate, gloves goggles and common sense are the order of the day and do not use it on anything other than steel parts it will eat aluminium and zinc for breakfast

    Thanks for the advice Airhead...

    My DEP pipe is shiny im assuming its stainless steel (or am i wrong?)

    What is the process for cleaning with Caustic Soda, do i pour the pearls in and add hot water or premix it and pour it in? Im obviously going to be wearing thick gloves and minding my eyes etc :)

    ta

    De-Coke solution?

    in The Bar

    Posted

    Anyone ever used Seafoam? I see some on ebay LINKY, i wonder whether this will assist with cleaning my engine carb etc?

    I have bought some Caustic Soda to do the silencer, but wanted to give the engine a proper going over as its been stood for so long.

    What do you rekon?

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