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How To Adjust Holley Carburetor Vacuum Secondary Springs

Holley offers some tips on how to properly operate and adjust four-barrel carburetors with vacuum secondary throttle blades. The video describes the various rate secondary springs, how to change them, and the testing procedures to follow to make sure the secondaries open properly for best performance.


 


More Videos...


Holley Carburetor Tuning Secondary Circuit - Summit Racing Quick Flicks
Norm walks you though how to properly adjust the secondary circuit on a Holley 4 Barrel Carburetor. Vacuum Secondaries or Mechanical Secondaries it doesn't matter, Norm has you covered and achieving that top end speed. Find everything you need for your Holley Carburetor at http://www.summitracing.com/redirect?banner=SocialYT4535





Slow motion video Custom Calibrated Holley Performance Carburetor.
Slow motion video of Custom Calibrated HP Hot Rod Series Holley Carburetor. You can find Custom hand built carburetors to your specifications and more at http://www.apsracingusa.com . New Custom Built HP Hot Rod Series 4150 Carburetor 750 CFM This is a Brand New Custom Built Holley Double Pump Carburetor hand assembled by Custom Carb Builder, Ron Blanchard. After the carburetor is built and calibrated to your spefications, it is tested on a LIVE engine to ensure the proper function, reliability and performance. These HP carburetors are ideal for street rods, off road racing, drag racing, and boating applications. Performance Carb has the experience and reputation of making more horsepower than the other guys. So, if you want more BANG for your BUCK, This is the Carburetor to buy! Features: - Base Plate has vacuum port for power brakes/transmission vacuum - Screw-in air bleeds - CNC Top - All metal components - Hi flow needle & seats - Dog leg Boosters - High quality components - Non-stick gaskets - Perfect for high performance street, race, or marine applications - Carbs are tuned on a test engine before shipping - All body surfaces are machined - Performance Carb uses a Superflow 1200 Flowbench for precision balancing & blueprinting of venturies, Booster signals, airspeed and total CFM - Hand built and made in the USA http://www.apsracingusa.com/content-categories/cat-148/performance_carb.htm l Music: http://www.danosongs.com - Doninator Photos: https://picasaweb.google.com/107276310312820030395/CustomHolleyPerformanceC arburetors?authuser=0&feat=directlink Buy at: http://www.apsracingusa.com/content-categories/cat-148/performance_carb.htm l http://www.apsracingusa.com/content-product_info/product_id-1971/holley_hp_ 4500_dominator_carburetor_750_1250_cfm_stage_2.html http://www.apsracingusa.com/content-product_info/product_id-1872/performanc e_carb_holley_hp_outlaw_series_carburetor_4150.html http://www.apsracingusa.com/content-product_info/product_id-2020/performanc e_carb_holley_hp_4150_stage_3_carburetor_650_1000_cfm.html http://www.apsracingusa.com/content-product_info/product_id-2019/performanc e_carb_holley_hp_outlaw_x_series_4150_carburetor.html High performance auto race racing products





How To Adjust Fuel And Float Level On Holley Carbs
Holley demonstrates how to properly adjust the fuel level and the float on Holley four-barrel carburetors.





How To Adjust The Accelerator Pump On Holley Carburetors
How-to adjust the accelerator pump on Holley carburetors to avoid stumbling and hesitation upon acceleration. Tips include: How to check for the clearance between the accelerator pump diaphragm arm & operating lever; how-to select the correct accelerator pump nozzle size, and accelerator pump cam selection and installation. Additional information can be found on Holley's website: http://forums.holley.com/entry.php?428-How-To-Cure-Carburetor-Stumble





Carburetor Idle Adjustment - Summit Racing Quick Flicks
Holley Carburetor not Idling smoothly? Norm walks you through the basics of how to tune your Holley Carb for a smooth idle by completely discussing the idle circuit. From curb idle screw to the idle mixture screws, Norm covers it all. Be sure to watch our other Summit Racing Quick Flicks on Carburetor Tuning: Inlet Circuit Tuning http://www.summitracing.com/redirect?banner=SocialYT4509





How To Adjust The Idle Mixture Screws On Holley Carburetors
Tips on adjusting the idle mixture on Holley carburetors, using a simple vacuum gauge. Proper idle mixture adjustments can prevent bogging, hesitation, rough idle, backfire, stalling and hard starting. Additional information can be found on Holley's Blog: http://forums.holley.com/entry.php?429-How-To-Adjust-The-Idle-Mixture-On-Ho lley-Carbs





Accelerator Pump
Footage taken from Holley Carburetor Installation & Tuning DVD





Vacuum Lines Connection
Footage taken from Holley Carburetor Installation & Tuning DVD





Holley Power Valve Tuning Tips
How to select the right power valve for your Holley carburetor. Backfires, poor fuel economy and fouled spark plugs are indications of an improperly matched or blown out power valve. This video shows the steps to select and check the power valve using a simple vacuum gauge. Additional information is on the Holley Blog: http://forums.holley.com/entry.php?430-Holley-Power-Valve-Tuning





How And When To Change The Jets On A Holley Carb
Holley explains how the main jets on a four-barrel carburetor operate. They also give instructions on changing the jets for increased performance. The video explains the various jet sizes, and how they affect engine performance.





Holley carb adjustment basics
-just a quick overview of how to adjust a holley and what to know. happy to answer any tuning issues. i know far more than id like to about these old holleys. not a very good public speaker clearly. HOLLEY CARB FLOODING & HARD STARTING SOLUTIONS http://youtu.be/hn4HovYvrF0





Double Pumper Carburetor Video - Holley Install & Tuning DVD
Buy the "Holley Installation & Tuning" DVD http://store.boxwrench.net/Holley-Install-Tuning-DVD_p_12.html This is an animated tour of the Holley 4150 Mechanical Secondary "Double Pumper" carburetor. We'll guarantee you've never seen your carb in this way before. You can't learn the inside of your carb any better than how this DVD will show you. If you buy a brand new Holley 4-barrel, this DVD now comes in the box with every purchase. If you already own a Holley carburetor or would like to learn about the internals of the all-time, most popular modular style carburetor, this is the DVD for you. It's the ultimate installation, tuning and troubleshooting guide for the Holley modular style carburetor. This disc will also help tune and troubleshoot any other brand of modular style and some one-piece style carburetors. Menus are full of bonus information and detailed animated tours of carburetor internals and accessory kits. Get the full DVD with all of the interactive menus, detailed animated tours of internals and accessory kits here... http://store.boxwrench.net/Holley-Install-Tuning-DVD_p_12.html Don't forget our Basic Engine Building DVD. This video is great for people interested in car repair, car care, and restoration. As well as hot rods, muscle cars, performance parts, and Boosting horsepower. It can also help you to gain knowledge for increasing fuel economy, how to lower your emissions, and covers preventative maintenance to avoid little things like overheating. Sample clips on our YouTube page and at our store here... http://store.boxwrench.net/Basic-Engine-Building-DVD_p_8.html BoxWrench.net is a community and resource designed for automotive enthusiasts. New Transmission DVDs and a Differential Rebuilding DVD just added. BoxWrench Store: http://store.boxwrench.net/ BoxWrench on Facebook: http://www.facebook.com/boxwrench





how to minimize engine bog with a Quadrajet carb
this is to minimize engine bog when the pedal is to the metal. do not over tighten, very small spring...you want to try 1/4 turns or 1/2...q-jets are good if tuned properly. also when you are tightening screw it will have tension on it so keep the screwdriver firm. 1986 gmc sierra single straightpipe to cherrybomb. you will need a small flathead screwdriver and a 3/32 allen key. be sure not to tighten to much or else your vacuum secondary flaps wont open.





Troubleshooting - backfire through carburetor
Footage taken from Holley Carburetor Installation & Tuning DVD





Holley Carb Overflowing
This holley carb has been sitting up for 4 years........





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