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Scotch's high MPG tricks 1 year 1 month ago #31126

  • dcarver220b
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A small correction?    I replaced all the valves.  None burned or damaged in anyway but was the machinists recommendation because he was concerned that reground valves and seats would create a shimming issue.   ie:  Too close to or even tighter then the thinnest available  shim - 2.0mm. 

And to reiterate regarding my mileage.  Strict 100KPH limit and multiple identical rides for comparisons..
Stock NGK spark plugs, a GM  6-pack ignition coil and typical silicone jacketed wire wound carbon-core plug leads 
  • Modified pilot needles - Polished to a point with a new arbitrary setting of 2 turns.  More sensitive then the stock tip,  the adjustment range for the Color Tune is now approx. +/- 1/4  turn which makes mixture adjustment far more accurate.
  • Enricher mod (Disabled)
  • Precisely sync'd 
  • minor adjustment to Ign.-timing.
  • New Brass throughout.  Stock jetting !

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