What size jets come in a Holley 650 double pumper?
Features:
| Barrels | 4 |
|---|---|
| Secondary Main Jet | 73 |
| Secondary Pump Nozzle Size | 28 |
| Supercharged Application | No |
| Throttle Bore | 1.688 inch |
How do I know what size Holley jet to get?
How to Calculate Jet Sizes for a Holley Carb
- Establish the elevation and temperature the carburetor will be operating within.
- Establish the current jet size of the jets within the Holley carburetor. Adjust the jets one size for every 2,000 foot change in elevation or for every 35 degree change in temperature.
Is primary or secondary jet bigger?
To answer your question, secondaries come in when you need more power, when the engine is likely at higher RPM and so the engine calls for more gas. Hence bigger jets.
How many jets are in a Holley metering block?
Holley says the new main body will work with any of these carbs, and include a set of 72 jets for the front and 84’s for the rear. I guess I don’t know enough about Holleys to understand exactly what the metering blocks do.
What are the specifications of a Holley Double Pumper?
Holley Classic Double Pumper Specifications: 4776 600cfm Primary main jets 69 Secondary main jets 71 Power Valve 6.5 Primary Sq. Nozzle .025 Secondary Sq. Nozzle .032
How big of a bolt do I need for a Holley carburetor?
It can replace Holley, Edelbrock, Carter AFB, and Autolite style carburetors with 5 3/16″ x 5 5/8″ bolt pattern. If you have a spreadbore style intake manifold, you will need an adapter to install this carburetor.
How big is the flare Inlet on Holley 4150?
Fuel Line Chrome For Holley Model 4150 Carburetor 5/8-18 inverted flare inlet. 9.460″ center to center. Pro-Series Adjustable Secondary Linkage Kit for all Holley Double Pumper, HP, and Ultra XP carburetors.