See this https://www.youtube.com/watch?v=5hwp5-W8jl0
https://www.youtube.com/watch?v=r-yFvunHGVk
2100 to 2150 transitions had some extra features.
One of them was the 2 stage Power valve, which not manny understand. The issue is that the power valve channel restriction floods the engine in a too rich condition. If you use the 2 stage power valve, you'll have some extra adjustability. To fit it, you need a bigger 2150 power valve holder boss.
http://www.therangerstation.com/tech_li ... 0_carb.pdf
http://vb.foureyedpride.com/showthread. ... ower-valve
http://vb.foureyedpride.com/showthread. ... wer-Valves
Two stage power valve is a Ford Motorcraft/Holley idea, found ex 4-bbl 4180c and later Jeep and Ford 2150 Motorcraft 2-bbl carbs.
Motorcraft CE-126 is a common two-stage power valve that I'd suggest.
http://grantorinosport.org/BubbaF250/carb/carb10.html
See http://www.carburetor-parts.com/Carbure ... _p_62.html
As stated, it requires a later Jeep 2150 or carrier to hold it, and you may have space limitations if you have a carb adaptor, but the 2 stage power valve often helps soften the transition to the large power valve channel restrictions on small sixes. It'll give you the adjustability you need.
The 2.8 Cologne V6 used this huge carb with sucess. It allows you to jet the carb down a few call numbers, and still have it rich enough under wide open throttle.
If your ignition is done first with a 16 degree intial and all in at 32 degrees by 3000 rpm, the Autolite 2100 will like a lean condition under part throttle, and a richer condtion can be catered for by the power valve's second stage at wide open throttle.
https://www.youtube.com/watch?v=r-yFvunHGVk
2100 to 2150 transitions had some extra features.
One of them was the 2 stage Power valve, which not manny understand. The issue is that the power valve channel restriction floods the engine in a too rich condition. If you use the 2 stage power valve, you'll have some extra adjustability. To fit it, you need a bigger 2150 power valve holder boss.
http://www.therangerstation.com/tech_li ... 0_carb.pdf
Motorcraft 2150 Carb Body Plumbing Bronco II & Explorer Specific. ... 1985 Ranger, stock 2.8l V6, 5 spd, desmogged .... One thing you might check is the power valve , they like to leak and will cause an over rich condition, ..
http://vb.foureyedpride.com/showthread. ... ower-valve
http://vb.foureyedpride.com/showthread. ... wer-Valves
Two stage power valve is a Ford Motorcraft/Holley idea, found ex 4-bbl 4180c and later Jeep and Ford 2150 Motorcraft 2-bbl carbs.
Motorcraft CE-126 is a common two-stage power valve that I'd suggest.
http://grantorinosport.org/BubbaF250/carb/carb10.html
See http://www.carburetor-parts.com/Carbure ... _p_62.html
Holley 4 barrel and Motorcraft two stage power enrichment valve. Please be aware that you cannot replace a 1 stage valve with a 2 stage without replacing the valve cover with a larger one.
Price includes 1 power valve only.
When the engine is at idle the vacuum is at the highest and the power valve (enrichment valve) is closed. As the engine speeds up vacuum drops and the power valve opens allowing more fuel into the carburetor.
On a 2 stage power valve such as these, the 1st stage opens up at a certain vacuum, i.e. 7,0 HG. This is at partial power. At close to full power the vacuum drops to very low HG, i.e. .5. This is where the 2nd stage opens allowing even more fuel to get to the main circuit.
The carburetor kits that include a 2 stage power valve are using OE specifications.
For other applications you will need to test the HG by hooking a vacuum meter to the engine and operate the engine at power and full power.
Changing from a 1 stage power valve on a carburetor that requires a 1 stage, to a 2 stage power valve. Is not recommended. If you aren't sure of what you are doing, you could cause too much fuel to be dumped into the carburetor.
As stated, it requires a later Jeep 2150 or carrier to hold it, and you may have space limitations if you have a carb adaptor, but the 2 stage power valve often helps soften the transition to the large power valve channel restrictions on small sixes. It'll give you the adjustability you need.
The 2.8 Cologne V6 used this huge carb with sucess. It allows you to jet the carb down a few call numbers, and still have it rich enough under wide open throttle.
If your ignition is done first with a 16 degree intial and all in at 32 degrees by 3000 rpm, the Autolite 2100 will like a lean condition under part throttle, and a richer condtion can be catered for by the power valve's second stage at wide open throttle.