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Product details
EMPI 43-5130-7 is a size 130 main jet for EMPI 40K, Kadron, Brosol, and Solex-style carburetors, metering fuel for the main circuit once the engine is past idle and pulling under load. It is the main jet EMPI installs in its own 40K 40mm carburetors, which ship with a 130 main, .55 idle jet, and 28mm venturi. EMPI sells it individually. A higher number flows more fuel.
EMPI's main jets for this carburetor family run from 112.5 to 140 in 2.5 steps, then 145 to 170 in 5.0 steps. The 127.5 (43-5127-7) and 132.5 (43-5132-7) sit a half step on either side. Matching idle jets run from .40 to .70 (43-5040-7 through 43-5070-7), and EMPI's jet assortment kit (43-5001) holds mains from 112.5 to 170 plus idle jets in one box.
Technical Details
- Manufacturer: EMPI
- Manufacturer part number: 43-5130-7
- Jet type: main jet
- Size: 130
- Carburetors: EMPI 40K, Kadron, Brosol, and Solex
- Sold as: each
Fitment & Compatibility
EMPI lists this jet for its 30 PICT-1 (98-1288-B), modified 30 PICT-1 (98-1287-B), and 34 PICT-3 (98-1289-B) replacement carburetors, plus 98-1225-B, 98-1292-B, 98-1300-B, and 40mm and 44mm EMPI, Kadron, Brosol, and Solex carbs. Weber, HPMX, and EPC carbs take EMPI's 43-53 series jets.
Installation & Tuning Notes
Set timing, valve lash, and float level, and check for vacuum leaks before rejetting. Popping under steady load points lean, and black, sooty plugs point rich. On dual carbs, change both sides together.
Common Questions
Is the 130 main jet sold as a pair?
No. EMPI sells it individually, so a dual 40K or Kadron setup needs two.
Is 130 the stock size in an EMPI 40K?
Yes. EMPI lists a 1.30 (130) main jet in both the left and right 40K carburetors.
