Blog

Date Your TY

Posted on

6 Comments

At the moment I am going to run this as a technical blog until I figure out how to split the files into different sections for downloading.

How to date your TY175 Twinshock - Updated

This is based on year of original manufacture. Production usually started July/August of the previous year.

Engine and/or frame number all are 3 digits 'dash' 6 digits. Engine & frame numbers didn't always match but were usually fairly close.



525-0***** 1975 Model TY175B

525-1***** 1976 Model TY175C

525-2***** 1977 onwards Model TY175D/E/F/G

More details to follow



How to date your TY250 Twinshock

This is based on year of original sale. Production usually started July/August of the previous year.

Engine and/or frame number all are 3 digits 'dash' 6 digits. Engine & frame numbers didn't always match but were usually fairly close.

461-****** 1973-1975 TY250J Japan market model but a few have appeared in Europe. This model was essentially a TY250B released onto the Japanese market 2 years earlier than the rest of the world.

434-****** 1974 Model TY250A


493-0***** 1975 Model TY250B

493-1***** 1976 Model TY250C

493-2***** 1977 Model TY250D

493-3***** 1978 Model TY250E

We are not exactly sure what happened after this as we have never seen a TY250 with a number later that 493-3*****. The 1979 TY250, which would have been the F model had the black and red pinstripe on the fuel tank. All we have seen with this tank graphic had engine numbers starting 493-3***** and was for sale in the UK up until 1983.

No matter what you read elsewhere there was no such thing as a 1981 TY250H with different headstock, different brake shoes etc. I have traced it back to, I think what was a typo in an aftermarket parts suppliers catalogue and it has been copied by numerous other manufacturers since.

The only other possibility was it was a planned model that never came in to existence but parts drawings, and possibly parts had started to be produced for it. This was certainly the case with the 1977 Kawasaki KT250 model, that was planned with black controls and mudguards but the project was shelved at the last minute after some parts had been produced and these pop up on eBay every so often.

Of course I may be talking total bollocks and if you have any information to correct my comments the please e-mail me here

 

Add a comment:

Leave a comment:
  • This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Comments

  1. Mr. B

    Not sure if anyone can help, I?m trying to determine the exact model and year of my TY250 ( I think ). I?ve had it about 15 years and cleaned it up for my son. It was really remarkable to ride When I first got it and although a Yamaha it was stamped on the Aluminium exhaust j. E. Shirt it?s also embossed on the flywheel cover J. Shirt. I rebuilt it with parts from P. E. M. S in Rochdale he said it was a very special model. The only number I can find on the engine is. 38v-010465 Any info would be appreciated. - - - - It is a 1986 TY250R and with the Shirty mods probably for a John Shirt supported rider. If I find out any more info I'll post it here. Cheers John

    Posted on

  2. Colin Broadhead

    Hi could you tell me where exactly to look for the two serial numbers frame/ engine thanks I am trying to put a year to the bike so to get valuation for sale of the bike . Colin Hi Colin Frame number is on the headstock and engine number is below the carb. Hope this helps. Cheers John

    Posted on

  3. RJ Wilton

    Thanks for the info. Very helpful. I've just purchased a 1 owner 75 TY250B. I also own a 76 TY175,(I'm the third owner) and a basket case 77 TY175. Interesting info about the Japanese domestic market bikes & their own VIN sequence. I have a JDM DT250 VIN DT1F166139. It is either a 72 or 73 model. The 73 export model VIN ends around 163431. Do you know where I could get info on the model year for this bike. Thanks RJ :)

    Posted on

  4. Paul thompson

    Hi I?ve just got a ty50 as a project but don?t know what yr it is engine number is 451-107126 can u help please

    Posted on

  5. James Webber

    Hello there I am having trouble finding out what year my ty 250 is the numbers I have found are on the frame: X4AJ-001444 On the engine it has 38V01 and V-010192 if you have any idea it would be greatly appreciated thanks, James

    Posted on

  6. Richard A. Jamieson - NY, USA

    Can not find a frame# but engine# is 1VY-0001-1 --- Is that any help to you to identify? ... Dick J. - NY Hi Richard Your bike is one of the first TY350N Models from 1985

    Posted on

Add a comment