Attention: TDR Forum Junkies 
i know others have already installed the vnt turbo from the 6. 7 but to date i have not see any version i like. so i have been pondering an he351ve turbo on the 5. 9 engine trucks. im thinking along the lines of a kit sort of package that many people would be willing to install. that means no adapters, at least not backyard looking ones and i dont want to have to change a lot of parts such as intake and charge pipes. also i want to steer away from any standalone aftermarket electronics.
on the first part, im thinking a steed speed exhaust manifold would work very well. they are working on a manifold for the ve, i think it is intended to bolt bolt to the 5. 9 engines and will allow the turbo to bolt up directly. they do not really mention what options there will be for flange position, at this point i am going to assume there will be several options, allowing different mounting positions, i dont know how well the ve clocks, so it may matter it may not. with this i think the mounting problems will be easily solved and will look clean and professional.
controlling the ve is going to be the tough part. my first question is how is the turbo controled from the factory. is it pwm or some other signal type control? or is it variable voltage like a throttle position sensor. i found a you tube vidieo of someone bypassing the electronics, basically he just hooked it straight up. HE351VE Motor Control - YouTube the problem i am seeing is the motor just spins. so what makes it stop in the proper place both forward and back? this is where i need help, my understanding of the various electronic controls is limited.
i dont know if the factory contorler can be made to work, but here is what i was thinking for a control setup. im thinking about using a stepper motor similar to that of a pyrometer, as the voltage increases it turns a certain amount according to voltage. this would be mounted to the nozzle controller inside the turbo. no voltage would deafult the motor to the maximum spool position and 12v would be maximum flow. controlling the voltage would be a pressure sensor that as pressure increased so would the voltage, im not sure if it would be better to use drive pressure or boost, or if it really matters. this would move the stepper motor and adjust the vanes. its simple enough in theory, practicality will be much different i am sure. also a three positon switch could be wired into the stepper motor. one position would cut all voltage forcing the nozzle closed, this would be used as the exhasut brake function. the second postion would leave the controller to function as normal. the third postion would supply 12v to the turbo forcing it open, this could be handy for a few reasons. the last thing i am thinking about, is having a variable knob inside the cab, like those used for bass boost knobs. im thinking this could be useful for relieving some drive pressure while cruising.
my last concern is with using the stepper motor. i saw a couple of vidieos where the variable actuation was controled by a spring. that makes me worried that the stepper motor would be over come by the drive pressure. is there a stepper motor that has enough strength to handle such a problem.
let me know what you guys think maybe if we pool all of our knowledge together we can find something easy and simple to control the vnt.
on the first part, im thinking a steed speed exhaust manifold would work very well. they are working on a manifold for the ve, i think it is intended to bolt bolt to the 5. 9 engines and will allow the turbo to bolt up directly. they do not really mention what options there will be for flange position, at this point i am going to assume there will be several options, allowing different mounting positions, i dont know how well the ve clocks, so it may matter it may not. with this i think the mounting problems will be easily solved and will look clean and professional.
controlling the ve is going to be the tough part. my first question is how is the turbo controled from the factory. is it pwm or some other signal type control? or is it variable voltage like a throttle position sensor. i found a you tube vidieo of someone bypassing the electronics, basically he just hooked it straight up. HE351VE Motor Control - YouTube the problem i am seeing is the motor just spins. so what makes it stop in the proper place both forward and back? this is where i need help, my understanding of the various electronic controls is limited.
i dont know if the factory contorler can be made to work, but here is what i was thinking for a control setup. im thinking about using a stepper motor similar to that of a pyrometer, as the voltage increases it turns a certain amount according to voltage. this would be mounted to the nozzle controller inside the turbo. no voltage would deafult the motor to the maximum spool position and 12v would be maximum flow. controlling the voltage would be a pressure sensor that as pressure increased so would the voltage, im not sure if it would be better to use drive pressure or boost, or if it really matters. this would move the stepper motor and adjust the vanes. its simple enough in theory, practicality will be much different i am sure. also a three positon switch could be wired into the stepper motor. one position would cut all voltage forcing the nozzle closed, this would be used as the exhasut brake function. the second postion would leave the controller to function as normal. the third postion would supply 12v to the turbo forcing it open, this could be handy for a few reasons. the last thing i am thinking about, is having a variable knob inside the cab, like those used for bass boost knobs. im thinking this could be useful for relieving some drive pressure while cruising.
my last concern is with using the stepper motor. i saw a couple of vidieos where the variable actuation was controled by a spring. that makes me worried that the stepper motor would be over come by the drive pressure. is there a stepper motor that has enough strength to handle such a problem.
let me know what you guys think maybe if we pool all of our knowledge together we can find something easy and simple to control the vnt.
, Steed Speed had finished the R&D and production of their direct fit 5.9 exhaust manifold.
