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Nutler

Dt175mx dating from frame numbers.

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Hi all,

i have recently purchased a Frankenstein dt , thought it was a dt125lc (engine is anyway) but when checking the numbers I find that I can’t identify the year for certain. The frame appears to be a dt175mx but I get differing info for it’s year, and the engine I recognise as a dt125lc but again I cannot seem to accurately date it.

I need to obtain a V5 and really need to know the ages involved. If the frame is 175mx then the engine will be changed for a more appropriate one, but would still be nice to know the engine age as well as frame if possible.

frame number.    2k400612**.  Last two numbers hidden for obvious reasons.

engine number.   2Y50043**.    Again last two hidden

If anyone can provide any info on this I would really appreciate it.

I have contacted Yamaha but no response.

 

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8 hours ago, Nutler said:

Hi all,

i have recently purchased a Frankenstein dt , thought it was a dt125lc (engine is anyway) but when checking the numbers I find that I can’t identify the year for certain. The frame appears to be a dt175mx but I get differing info for it’s year, and the engine I recognise as a dt125lc but again I cannot seem to accurately date it.

I need to obtain a V5 and really need to know the ages involved. If the frame is 175mx then the engine will be changed for a more appropriate one, but would still be nice to know the engine age as well as frame if possible.

frame number.    2k400612**.  Last two numbers hidden for obvious reasons.

engine number.   2Y50043**.    Again last two hidden

If anyone can provide any info on this I would really appreciate it.

I have contacted Yamaha but no response.

 

The frame is an MX, a late early model if that makes sense, should have a round sw arm. Known as a 2K4, chassis number 2k4-000101 on.

The subsequent 2X2 and 4J4 model codes (little different to look at) were 2k4-01 and 2k4-02. So def early mx.

Cant help much with the engine number but there were some cross over mongrels of lc and mx parts bin match ups. Things in the early [email protected] were not as exacting as they are now. The early LC was quite literally a Mx bottom end with a water pump and and a barrel pinched from an rd 250. An lc barrel fits a 125/175 bottom end if your interested. No idea if it would run, port height, deck heights etc?. But illustrates the point.

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Mines an early DT175MX with round tube swinging arm first registered in May79 but built in 1978. The  number is 2K4 3XXX. That might give you an idea or at least a date to work from.

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The first round arm type were 78-79 the middle one was only available for a few months in 79 then the last 4j4 model ran till as late as 85 with the very last of the stock as they couldn't give them away because of the learner laws.

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Hi, thank you for comments.

I have now cleaned a bit more paint off the frame numbers and it appears to me that it has been re stamped, it just doesn’t look right. The frame has quite a few differences to a 2k4 (as stamped) but can’t seem to find a similar frame photo to compre. The is a bulbous nodule on the upright  that the radiator frame screws to that is not present on a yz or a  Dt. I have photos but can’t see how to upload them.

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1 hour ago, Nutler said:

Hi, thank you for comments. I have photos but can’t see how to upload them.

Uploading pictures is easy

Log into postimage.org

Upload your pictures into postimage

Once you have uploaded pictures click on hotlink for forums and copy url

paste in here  

On the link there are 2 x https text. You may need to delete the s at the end of each, you may not

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I also need to obtain a v5c log book for a really early dt175mx ?

Not sure if the bike is an import or uk bike, frame number is 2k4 0005xx & the numbers are good and not messed with.

Hope someone can help me, Many thanks in advance

Regards, Ronnie

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