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Longacre Circular Slide Rules 50943

Jetting Slide Rule, Circular, Relative Air Density, Use with Jets Marked in Thousandths, Each

  • This part is normally shipped directly from the manufacturer / Supplier.

Estimated Ship Date: 10/1/2014 (if ordered today) Would you rather pick it up? Select Location

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Manufacturer's Part Number: 50943
Part Type: Calculators
Summit Racing Part Number: LNG-50943

LCD Readout: No
Backlit: No
Quantity: Sold individually.
Notes: Calculates jet size from air density. Designed for jets by the thousandths.
In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

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.

Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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