Difference between revisions of "Yamaha TZ250"

The "D" model of 1977 was just about identical to the previous model except for the inclusion of revised heads with angled spark plugs and new expansion chambers with silencers as standard issue. Minor changes included the side gearbox drain bolt gasket, 2 crank web halves, base gasket and the centre crank bearing.  Carburettor mods including new floats, float chamber gaskets and choke systems also appeared. Peak power hopped up by 1 to 53bhp@ 10,500rpm.

The "D" model of 1977 was just about identical to the previous model except for the inclusion of revised heads with angled spark plugs and new expansion chambers with silencers as standard issue. Minor changes included the side gearbox drain bolt gasket, 2 crank web halves, base gasket and the centre crank bearing.  Carburettor mods including new floats, float chamber gaskets and choke systems also appeared. Peak power hopped up by 1 to 53bhp@ 10,500rpm.

[[Image:Yamaha-TZ250E.jpg|left|thumb|Yamaha TZ250E]]

[[Image:Yamaha-TZ250E.jpg|left|thumb|Yamaha TZ250E]]

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The factory's 1978 250cc offering, the "E" was a little disappointing in that it was virtually unchanged from the previous year's offering, apart from a new chassis which had the engine sitting approx. 20mm further forward, the bike's swingarm  remained the same. The front of the engine was retained by a pair of alloy mounting plates which required an additional 20 or so bolts, nuts and washers to secure to the engine and frame. The rear lower engine mounting bolt was also lengthened by 5mm.

The factory's 1978 250cc offering, the "E" was a little disappointing in that it was virtually unchanged from the previous year's offering, apart from a new chassis which had the engine sitting approx. 20mm further forward, the bike's swingarm  remained the same. The front of the engine was retained by a pair of alloy mounting plates which required an additional 20 or so bolts, nuts and washers to secure to the engine and frame. The rear lower engine mounting bolt was also lengthened by 5mm.