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Longacre Racing Products 50941 - Longacre Circular Slide Rules

  • Jetting Slide Rule, Circular, Relative Air Density, Use with Holley Jets, Each
  • Estimated Ship Date: 6/11/2012
 
BrandLongacre Racing Products
Manufacturer's Part Number50941
Part TypeCalculators
Product LineLongacre Circular Slide Rules
Summit Racing Part NumberLNG-50941
 
LCD ReadoutNo
BacklitNo
QuantitySold individually.
NotesCalculates jet size from air density. Designed for Holly jets.
 

These Longacre circular slide rules allow you to run your engine at wide-open throttle to find the best main jet. Start with large jets and work your way down while checking plugs, pistons, EGTs, etc., to get the best mixture for acceleration and top-end. When this is achieved, check your RAD (Relative Air Density) gauge reading and jet size. To check jetting next time, set the RAD guide on base line. Check the RAD gauge reading and find the jet size under this number on the RAD guide. This will allow for easy adjustments at the track to fine-tune your engine.