mudyman Posted May 26, 2013 Report Share Posted May 26, 2013 Hi all, I´m not a TY guy (had a used mono in about 1990). Theres a red and white 1977 twin shock TY 350 for sale and I didn´t ever hear of there being a 350 one. The seller says it has registration documents where it says TY250 but he´s got a pic of the barrel that say´s 350 (351 cc exactly). It´s not cheap as he want´s 1250,00 Euros and its a non runner thats been standing outside with rust on the forks etc. etc. Any information about the 350 from 1977 would be interesting ! Quote Link to comment Share on other sites More sharing options...
nelly1 Posted May 26, 2013 Report Share Posted May 26, 2013 ive never heard of one but im no expert Quote Link to comment Share on other sites More sharing options...
tony27 Posted May 26, 2013 Report Share Posted May 26, 2013 I wonder if it has a dt360 engine fitted or possibly just the top end although I'm not sure whether that is possible Quote Link to comment Share on other sites More sharing options...
guy53 Posted May 26, 2013 Report Share Posted May 26, 2013 I heard about a limited edition TY TS 350 but I don't know what year they where. Guy Quote Link to comment Share on other sites More sharing options...
mattylad Posted May 27, 2013 Report Share Posted May 27, 2013 The USA had the big bore engine as a production bike Quote Link to comment Share on other sites More sharing options...
zuma Posted May 27, 2013 Report Share Posted May 27, 2013 The USA had the big bore engine as a production bike Hey Matt, I think he's talkin' abaout a 1977 twinshock... Maybe it's a 350 "Rayer" (type 616) Quote Link to comment Share on other sites More sharing options...
searay175 Posted May 27, 2013 Report Share Posted May 27, 2013 Hey Matt, I think he's talkin' abaout a 1977 twinshock... Maybe it's a 350 "Rayer" (type 616) On yamahaty.com in the "rayer" section there are pics and specs on it. Yes the 616 series Quote Link to comment Share on other sites More sharing options...
mattylad Posted May 27, 2013 Report Share Posted May 27, 2013 Oops, misread the post! There was also the Majesty 320 and some special 350cc made. I think the Rayer was actually a 320 as well. Quote Link to comment Share on other sites More sharing options...
mudyman Posted May 27, 2013 Author Report Share Posted May 27, 2013 Thanks for the replies, I got a mail from the present owner and hes thinks its a special works one, he also sent me the link to yamahaty.com and under "Genese de la TY" there´s the "Rayer 360" bike shown in about 1972. Under "de vente" theres a list with sales in france and the 350 is listed with 2 sold in 1977, 84 sold in 1978 and 78 sold in 1979 so it must have been about but when very rare. The pic of the barrel shows clearly "351 cc" stamped at the bottom. http://www.ebay.de/itm/Yamaha-TY-350-250-Trial-Twinshock-Vintage-Enduro-Motocross-Gelandesport-Oldtimer-/151049963787?pt=Motorr%C3%A4der&hash=item232b47890b#ht_215wt_958 thats it ! Quote Link to comment Share on other sites More sharing options...
jc2 Posted May 27, 2013 Report Share Posted May 27, 2013 (edited) Looks to me very much like its an RT2 or RT3 barrell, head & piston on a TY250 bottom end. It'd be a lot of work to adapt it as the stud spacing is different, as is the stroke (70mm vs 64mm). Probably uses the std 64mm stroke giving 321cc actual capacity, as Matty suggested. Edited May 27, 2013 by jc2 Quote Link to comment Share on other sites More sharing options...
guy53 Posted May 28, 2013 Report Share Posted May 28, 2013 When you want to go '' big block '' with a TY you can use DT 360 or DT 400 piston that give you different size, 321 vs 361 cc. Guy 1 Quote Link to comment Share on other sites More sharing options...
feetupfun Posted May 28, 2013 Report Share Posted May 28, 2013 The Yamaha development people in Holland developed a 360cc TY250 motor which utilised an RT3 barrel and head, and a stroked crank to achieve the same bore/stroke as the RT3 and DT360A motors. There was quite a bit of work required to achieve this with a TY250 bottom end. I have recently ridden a TY250D with this motor that was built in Sydney, Australia in 1977 using advice from the works Yamaha trials people in Holland at the time. It is still owned by the person who had it built in 1977, and it saw sterling service in both the solo frame and as a sidecar outfit. These motors are too tall to fit in a Majesty frame. Quote Link to comment Share on other sites More sharing options...
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