Is there any way to spin more rpm's on our 7.3's (and is it worth it?)
Diesel Enthusiast
Joined: Jul 2008
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From: Clinton UT
Re: Is there any way to spin more rpm's on our 7.3's (and is it worth it?)
sent from my rooted Evo cm7
Last edited by 95powersmoker; Jul 26, 2011 at 05:36 PM.
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Being Evaluated
Joined: Feb 2010
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From: Buffalo, NY
blow what up? 
Seems like hes doing a good job
‪Frank 7.3 Powerstroke 5,000 rpm rev smoke.‬‏ - YouTube
Seems like hes doing a good job
‪Frank 7.3 Powerstroke 5,000 rpm rev smoke.‬‏ - YouTube
The ONLY thing that makes spinning the 7.3L NOT worth it is the HEUI injection system.
Sure, you can get a stock-injectored 7.3L to spin 5000 RPM but it will have ZERO power at that point. Power is fuel delivered over time; and TIME is something that the 7.3L injector does very inefficiently.
Oh, and as far as Frank's 7.3L in the video, it's been said time and time again that his reason for having those is SIMPLY for competition purposes (sled pulling/drag racing) to keep the smoke from "fogging" the lights and drowning the people in the stands.
Sure, you can get a stock-injectored 7.3L to spin 5000 RPM but it will have ZERO power at that point. Power is fuel delivered over time; and TIME is something that the 7.3L injector does very inefficiently.
Oh, and as far as Frank's 7.3L in the video, it's been said time and time again that his reason for having those is SIMPLY for competition purposes (sled pulling/drag racing) to keep the smoke from "fogging" the lights and drowning the people in the stands.
Is there a way to hop up the heui? Such as a better hpop (and lpop?), x-overs etc? How do you decrease the timing of the injectors?
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Joined: May 2010
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Injectors that can put out more fuel in less time is the only way.
There is a very small window of opportunity to inject the fuel and the electronics have a specific amount of time to do it (less time as RPM increases). Take into account the relatively large "lag" time between the commanded start of injection and the time it actually takes for the injector to "open" and you have a recipe for a huge lack of high-RPM power production.
There is a very small window of opportunity to inject the fuel and the electronics have a specific amount of time to do it (less time as RPM increases). Take into account the relatively large "lag" time between the commanded start of injection and the time it actually takes for the injector to "open" and you have a recipe for a huge lack of high-RPM power production.
Diesel Bomber
Joined: Jul 2010
Posts: 3,884
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From: Hays, KS
it kinda sounded like a ricer. IMO. i cannot recall where i found it. (some ones website) but it was a mechanical injection pump for the 7.3 power stroke. it sat where the hpop would be. but they didn't have very much info on it. i'll see if i can find it again.
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either that or it was one hell of a hpop.
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either that or it was one hell of a hpop.
Last edited by fordornothing; Sep 12, 2011 at 07:53 PM. Reason: Automerged Doublepost
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Being Evaluated
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Or was the kit $25,000? I cant remember now but I recall there being a thread on it. It was something ridiculous that made you want to just go buy a NEW common rail psd, instead of retrofitting the 7.3
