Archive for the ‘con rods’ Tag

XS650: 650 Central 145mm Long Rod Kit   Leave a comment

650 Central also have a 145mm long rod kit.  JCEN11-1000. Not yet listed either.

$800 for rods and pistons. In stock.

Will later be offering a kit with sleeves or fitted to a ‘big-fin’ cylinder.

 

LR1 .. Wossner pistons for long rod kit

Wossner pistons for long rod kit

 

 

LR2 .. Wossner piston

Wossner piston

 

 

LR3 .. Wossner piston

Wossner piston

 

 

LR4 .. long rod kit

long rod kit

 

Mike “Mercury” Morse writes further …

Piston/ ring/wrist pin package is 11 grams lighter than a stock 650. They are sized at 79.99mm, to allow for potential honing of existing cylinders. Reduced headland for more power and better emissions, allowed by a truly complimentary squish band. (A true 10.5:1 is achieved)( to be verified). Modern ring package has 1mm top and 1.2mm 2nd ring, with a 2mm 3 piece oil ring. Connecting rod is 145mm c-c, achieving a 1.96:1 rod/stroke ratio, moving the torque peak up in the power band, smoothing the short rod’s explosive midrange, increasing traction and peak power. Small end is bushed with premium C630 aluminum bronze and has 10% more area. Big end bearing has 3.5mm rollers for less skating at high speed.

650 Central … Mike “Mercury” Morse …

“To race is to live—all the rest is just waiting”

Note: … 3 standard types of XS650 motors

  • 256 … 136mm rods … XS1-TX650
  • 447 … 130mm rods … TX650A on non-european models
  • 533 … 140mm rods … XS650B on european models

 

LR5 .. 256 – 447 – 533 rods … from skull

256 – 447 – 533 rods … from skull

Posted September 26, 2012 by xscafe in Motor - Crank

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XS650: Con Rods   Leave a comment

 

This is from the Yamaha Racing Tips Manual.

1 .. 447 rods came slotted from factory ... 533 rods didn't - Heiden sells them now

447 rods came slotted from factory … 533 rods didn’t – Heiden sells them now

 

2 .. interesting about the bearings

interesting about the bearings

 

 

256 cranks … 135mm rod … XS1, XS1B, XS2, TX650 … 22mm piston hole … 26mm crank pin

447 cranks … 130mm rod … TXA on, US and 447 Euro motors … 20mm piston hole … 26mm crank pin

533 cranks … 140mm rod … European 533 motors … 20mm piston hole, scooped crank pin 29mm

Posted December 19, 2011 by xscafe in Motor - Crank

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