NOS on a N/A TD42

[90Mav]

Ok so i've been tossing around ideas for getting some decent HP out of a natrually aisperated TD42 in the general tech section..
http://www.outerlimits4x4.com/phpBB2/vi ... 67#1221567
have decided that a good first step is NOS... with water injection to keep the EGT down...
now i want to add a fair bit of NOS so extra fuel is mandatory.. but only when the nos is going...

I have been told that the boost compensator on the turbo injection pumps can be used for this purpose. i am thinking that if i had air, with a low pressure regulator i could switch it with a solenoid, and dial in the fuel with air pressure..
anybody see any problems with this?
could eaven be dual stage, with 2 regulators?
perhaps fully mapped but seems like too much dyno time/trouble/money..

was also thinking about the electronic injection timing on the newer pumps.. anybody have much experiance with these? i think that the primary injection timing is still mechanical and the electronic side only fine tunes it? or is the timing advance on these pumps fully electric?
have heard that they run poorly when the actuator is U/S.. can they be set to run normally with no signal to the actuator? then i could use a ?black box? (ideas???) to alter timing with the nos..(possiply with the fuel mapped in too, but it is starting to sound like re-inventing the wheel)

[Dzltec]

Hi 90 mav,

good to see someone thinking outside the square. You will find you may not have to use water inj as nitrous when introduced into the inlet manifold also has a cooling effect.

A boost compensater will work, you will need a positve pressure going to it. It can be set up in a dual stage system.

With the electronic injection all that is controlled is the advance part, it uses a needle lift sensor on no 1 injector as a feed back control to tell the ecu what position the injection point is at. The timing control valve controls how much fuel pressure the advance piston gets to alter advance. It is pwm controlled.

Why do all this if you are worried about time, money or trouble? As I think you will need lots of all 3 to do it right. It can be done, the nos needs to be a dry system, be prepared for lots of refills, it doesnt last too long.


Good luck

Andy

[bogged]

ask Cheezy about his experience with the MAV when he tried NOS... and the fence, and the cop that was behind him when he hit the switch

[Tapage]

Dude ... no matter what I thought crazy you are .. it's a great idea out of the square as Dzltec said ..

[90Mav]

Hi 90 mav,

good to see someone thinking outside the square. You will find you may not have to use water inj as nitrous when introduced into the inlet manifold also has a cooling effect.

A boost compensater will work, you will need a positve pressure going to it. It can be set up in a dual stage system.

With the electronic injection all that is controlled is the advance part, it uses a needle lift sensor on no 1 injector as a feed back control to tell the ecu what position the injection point is at. The timing control valve controls how much fuel pressure the advance piston gets to alter advance. It is pwm controlled.

So can the pump run (or be set to run) as normal without the electronic control functioning? and Is the injection advance the only thing controlled by this ecu? what other sensors are used by the ecu?
If so, could the controll run off a basic aftermarket computer, that will just bring in a set amount of advance per rpm, if the nos/extra fuel is switched?

and what is a pwm?

Why do all this if you are worried about time, money or trouble? As I think you will need lots of all 3 to do it right. It can be done, the nos needs to be a dry system, be prepared for lots of refills, it doesnt last too long.


Good luck

Andy

time and trouble arnt really issues, but money(and dyno time) is limited... I am a sucker for n/a motors they just feel right

im going to have to get a new pump anyway, caus i will need extra fuel, and the boost compensator seems like the easiest way to get it selectively. (if anyone has any cheaper ideas.. im all ears ), so im wondering if it is worth getting the one with the electronic timing controll. but i dont want the motor to depend on a computer to run, so if it cant be made to run without the electrics for normal operation, then i'll probably give it a miss....or not...hmmm.