December 13, 200322 yr Can anyone tell me if a TY175 is the same engine/gearbox as a TY125 with a larger bore and piston, and is the con-rod the same? Thanks. Eiger. :madsanta:
December 13, 200322 yr TY175 and TY125 share the same engine/gearbox and from what I understand you can slide a 175 Barrel/head onto a 125,whilst fitting a larger 175 piston/small end also........so I figure conrod is the same........unless somebody knows different.
December 13, 200322 yr According to my Haynes book: stroke 50mm for both bore 56mm for 125 and 66mm for 175 primary ratio 74/19 for both transmission ratios the same final drive 37/17 for 125 and 51/13 for 175 Only lists side clearances for rod, not diameters so I can't see if the sizes are the same.
December 14, 200322 yr As I understand it, the 175 engine was being used recently in one of Yamaha's quads. Our dealer in Phoenix has a number of parts in stock. Things like seals, clutch plates, gaskets etc.
December 19, 200322 yr yamaha have used the Dt175 engine in one of their quads and they are very nippie.Engine parts are very simarlar.if anybody needs any bits bits let me know.
December 19, 200322 yr if anybody needs any parts for any of the TY range give Nigel Birkett a call on England 01229716806.they will be able to sort you out with just about anything.
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