Yamaha

I am just about to finish the rebuild of my TY175 engine, have had it bored and tightened the piston to cylinder clearance up, I intend careful running in and hope the better piston fit will quiten down the noisy engine. question is, has anyone experience with using a better quality oil to help prevent a seizure whilst piston is fully run in, I was thinking of Castrol A747 or XR77 just for the first ten or so hours of running (it also has new mains) any recommendations appreciated, ps I then intend running it on Castrol TTS (after flushing the castor based oil out of course).

I suspect the previous owner of my '80 TY fitted el cheapo brake shoes, there's very little going on back there even when it's stone cold (and I can't hit the brakes hard as I have right knee and ankle problems) So, what shoes should I replace them with, and is there anything else I can do to improve the brake performance?

Took all the lights off- need a good way to cut off the power to the coil- The switches I have are both momentary two wire switches that mount on the handlebars. I think they are meant to ground out the pulses to the primary side of the high tension coil. What has worked for you? Details please!

hi silly question but which is the best way to have bettor gas shocks on ty175 seen bikes with reservoir at top and with it at bottom do people have them with valve at top just for safety and valve getting damaged on rocks trees etc? any views appreciated

HELP , HELP , HELP im looking for a good mechanic to fix my ty 175 keeps jumping out of 3rd and 4th gear i have no idear why as not mechaniclly minded im from coalville leicestershire le672au if any one knows a good mechanic or some one that dose it pls pls pls drop me a line dont wont to scrap the bike as have all whys wonted one , ther must be some one that can help me on here pls pls pls get in touch thanks

Hello, I have a '91 Yamaha TY250R "pinky" that I purchased a few years back, it was the bike i learned to ride on when I was 13 and was sold to someone else and I scored it when it came up for sale on kijiji. The bike has suddenly developed an issue, when I put it into gear from nuetral into first gear with the clutch fully engaged the bike lunges forward and immediatly stalls. The bike is idling normally and the last time I rode it, was nearly a year and a half ago I recall this being an issue but I dont recall the clutch being worn out. Does anyone has any ideas of what may be causing this? thanks.

Am wondering what to do with my Pinky when I have re-built it, am undecided if I should keep it and ride it in beginners trials or sell it and buy something a little newer, lighter, more user friendly etc. Part of me wants to keep it but I know all the hard work will never look as good or fetch as much money once I get going on it and drop it on the ground a lot! I have really enjoyed working on it but parts seem very expensive for what they are and it isn't the lightest of bikes it has to be said.

I'm on the lookout for a new flywheel cover for my mono, I know birks did once make em, did John shirt do a similar thing?

Found this on the web would you ever dare ride it http://www.lewisportusa.com/Images/restora.../yam_chrome.htm

this ty is begining to really p*** me off. ok. running ok, clutch now sorted but having had a new piston and l.e.b put in it sounds noisier than the worn one. rattle rattle rattle. fine on idle then rattley when loaded. help before I torch the thing.

Hi! I have aquired a Ty250c twinshock that has "Boge Orca 125-317" shocks on it that are in like new condition. I have been searching the web to try to find out if these were actually for a trials or enduro or whether they are for a vintage road bike. Boge was sold out to Af Sachs and I cannot get any reply from them. I need to find an old catalog from the 70's for references. Any ideas? Thanks!

Hi! Went on my first trial today with my ty250 twinshock! First 10 stages was fine, after that started to bog down under load. Could it be overheating? Any ideas? cheers carl

just picked up a 75 TY175. It has footrests that are bolted on the lower part of the frame.. below the kickstarter/CS sprocket. I see that there are kits to move them back, so I assume that was a factory option for these bikes? (I'm just starting to learn about these bikes so please bear with me). secondly, and more importantly, I see what look like a couple of different kits (or maybe they are all the same?) but wondering if I need to also replace the shifter/brake lever? I've ridden modern trials so I am used to the shifter being well forward of the left footrest, but wondering more about the brake lever.. it looks like the stock lever will require a bit of a s…

Some of you may know that I have a boost bottle fitted on my TY 175, and some doubted whether it does anything to improve the performance, anyway I came across this info and thought it would be of interest , click HERE

Someone told me you could get a boost bottle for a yam 175 that goes between the carb and reed valve which gives it some more oomph is this true? and if so where can i get one from and are they any good and how hard are they to fit? cheers

A TY175 in bits was delivered today,what do I do with it ? Firstly I was really taken with that lovely 200 Majesty at the Classic dirt bike show at Malvern.How much better is the Majesty frame than the standard one ? As the bike I have just bought is totally stripped,(down to hubs and spokes !) I can go in any direction when I build it.Who does the 200 big bore conversion and is it worth it ? I spoke to Craig Mawlem at the last Bath classic trial re one of his frame kits to do my other 250,same again I wonder how much better they are than the standard one,I really like my standard one - cant believe how well it steers and grips,sorry…

Hey gang is anyone running the newest "dual stage" power reeds from Boyesen #6TR133 in TY175?

Anyone know who supplies Boyesen Reeds for a 77 250 twinshock?

can anyone tell me where to get boyesen reeds, I have fitted a DT175 reed block and inlet rubber to my Majesty and want to fit boyesen reeds but cannot find a supplier, can anyone help ? Thanks