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Discussion Starter #1
Im going to be building an e-85 stack injected motor and was wondering if anyone was using a dial a jet . Would it make sense to use it for tuning the high speed instead of having to stop and change pills you could do it on the fly then set it up for atmospheric conditions plus and minus from the initial tune? Would appreciate any input for or against. Thanks.
 

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Im going to be building an e-85 stack injected motor and was wondering if anyone was using a dial a jet . Would it make sense to use it for tuning the high speed instead of having to stop and change pills you could do it on the fly then set it up for atmospheric conditions plus and minus from the initial tune? Would appreciate any input for or against. Thanks.
Kinsler's Dial-A-Jet is a nice piece that is commonly used in the Main Bypass of many Sprint Car injection units for just that purpose. They are generally running Methanol, but the same theory would apply to Ethanol. The Dial-a-jet does allow for quick change of the main bypass "on the fly". You can change it while running. Kinsler also has a "Quick Change" Bypass that is an inline jet holder for a single jet. The quick change bypass is a unit constructed very similar to a quick air coupling. You just pop it apart and change the jet. The single jet unit is more common in drag racing and cheaper, but cannot be changed while running.

I am assuming that you meant Main Bypass when you used the term High Speed bypass as they serve different functions. The high speed bypass is one that is a supplementary bypass generally to lean the system out at high rpm speeds. I don't know of any folks using the dial-a-jet for their high speed lean. However, a person could use one on the high speed. Kinsler has a slick "diaphram" style hi speed bypass that may be a better solution for the hi-speed bypass.

Any way you go, the bypass jets are generally easy to change in any constant flow injection unit as they are a single jet for the main, or single jet for the hi-speed mounted in jet cans or BV's, etc. The Dial-A-Jet would be a good one for "on the fly".

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Discussion Starter #3
Sorry I didnt mean putting it on high speed , I cant type and yet my fingers still got ahead of my thought. The sprint car guys talk about the high speed kicking in feeling like a supercharger hitting, so being able to get the main just right should be a plus since air on the river has to be a lot different than dyno room air. Then throw in that Im a geographic undesirable as far as engine builders specializing in boat stuff. The main bypass is just set off different size jets if Im correct and the high speed by pill size and spring pressure. If thats correct would the high speed pills and springs fit the dial a jet because that could really help tuning even if you found what worked and removed it and put the regular bypass can in. Not trying to reinvent the wheel but you west coast guys have water conditions and weather that Pennsylvania cant match.
 
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