Yamaha

Does anyone know if a DT250MX engine will fit in a TY175 frame?

Hi can anyone tell me if a dt250 piston will work ok in my ty250 twinshock?

As anyone tried a DT cylinder on a TY175? I have an early DT jug and I'm thinking of using it. I did find that the exhust port is 2mm higher in the DT then the stock TY cylinder. And that the intake port is 3mm wider as well. Also the DT cylinder head also has a smaller compression chamber in it, but will need the fins cut down to work.

Hi, Saw a dt175 in trials trim the other week at a trial just wondering if anyone on here has converted one to trials speck and what its like? Is it just the same the ty175? Cheers

I've got a dt250 piston for my ty! New rings arrived, in box with rings is a thin 50pence shaped ring! Can anyone tell me where it goes?

Has anyone ran a D803 on the back of a Ty175? Will the tubeless seat and stay on?

Can anyone tell me if the early aircooled mono engines are the same as the TY twinshock engines? I bought a TY250 (twinshock) with a decidedly bad motor in it, I'm trying to find a complete motor and not getting anywhere, so I thought an early mono engine may fit, anybody know? Thanks.

A mates selling his TY250A i think its a 74 model (white/ yellow tank and has TY embossed on the engine case) its bloody light and pulls very well i was wondering as this being the 1st or 2nd model TY250 that Yamaha produced was it competitive back in the day when pitched against Sherpas, Ossa MARS,Cotas etc! and would it be any good now?

I'm currently using a ty175 with a WES exhaust fitted (no silencer box) For some reason it keeps destroying spark plugs (whiskering).So we have gone up to a hotter plug but still it destroys them it also doesn't run cleanly at the bottom end. Apparently the previous owner had the mains and big ends done and it was rebored to first oversize, however the piston currently fitted has square shaped skirt ports which i am told is the piston out of the yam dt as the ty pistons (which are apparently no longer available) have round skirt ports has anyboby got any knowledge of what plug or piston should be in the bike or any ideas asa to the problems we are experiencing many tha…

I had my eye on a petrol tap on ebay, just coudn't believe how much it sold for.http://www.ebay.co.u...984.m1423.l2649

What's the chances of this selling??? http://cgi.ebay.co.uk/YAMAHA_W0QQitemZ3204...c#ht_500wt_1182

Have you seen this http://cgi.ebay.com/ebaymotors/74-Yamaha-T...emZ290265913968

Amazing what a bit of spit and polish can do http://www.ebay.co.u...=item3a770d1332

Just got the new Electronic Ignition (STK-402L) from Electrex. The old Stator is removed and the instructions say that if you position the plate in the center of the screw holes the bike will run....what I want to know is, is it possible to use a degree wheel to set the timing after you find TDC, or do you need to use a strobe. Second question; how do you adjust the stator plate with the engine running when the flywheel is in front of the plate?.

Trying to figure out why my 84 ty does not have spark. The manual says coil resistance is supposed to be 240 ohms +/- 10%. My problem is I am not sure how you are supposed to measure coil resistance. The coil on the bike (Aftermarket)has a small wire going into it and of course the high tension lead for the plug comming out of it. Are you supposed to measure it from the small wire to a ground source on the bike?

hey i have trial 80 and im getting power from the magneto but no spark to the coil relly need help

My TY 175 is progressing nicely. I have read on this forum the mixed results that people have had with the Electrix World system. Some have said some very nice things, others have had no luck and everyone seems to agree that they are not especially communicative with their customers. In my case, I sent several e-mails and none received any response at all. When I ordered an "electronic ignition" from an American source, the Electrix World unit arrived. So...that's what I am using. The unit appears to be very well made, but as you can see from the photograph, the unit just doesn't quite match up, so I'm going to have to be doing some grinding with my Dremel tool on the en…

Just a query,a mate of mine was told you could fit the electronic ignition off a DT straight on to a TY with no mods. If this is the case,why is,nt everyone fitting them?Must be more to it?

I've just purchased electronic ignition from electrex world for my ty250! They say it needs setting up with strobe, what degree off tdc do I need for ty250? Never set timing before ?

Does anyone know if it is possible to use an electronic ignition from an RD80 or similar on a TY. If the flywheel fits the crank what all would need to be put on the bike to make it work, i.e. the CDI unit. I would want to run it without a battery so is there any way this would be feasable, I just thought that it would be a bit more reliable than points. Thanks for any advice you may be able to give me.