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post #1 of 1 (permalink) Old 10-02-11, 10:43 PM Thread Starter
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exhaust manifold question for triton v-10

Hello all,

These a series of odd questions, but if you would bare with me please. I primarily do electronics installations for lightly armored ford excursions and f 250 superduty's, but i have a situation (and possible contract) in which we have installed a small 12volt, 60psi 5 gallon/per minute, fuel transfer pump under the hood with a small reservoir of anti freeze that we are planning to inject into the exhaust manifold at the touch of a momentary button.

the net result is a smoke screen out of the tail pipe as the fluid is heated upon exiting. This is the method used in both military and aeronautical smoke applications...the fluid and method of heating are proven and sound. ...but my questions are these:

1) if the radiator fluid is injected in the exhaust manifold will it foul up the catalytic converter and/or set off engine warning lights? Keep in mind this will be momentary injection, and used at higher rpm's and very rarely ....will a potential engine warning about fluid or mixture change in the exhaust manifold not allow the vehicle to pass emissions tests? will a simple reset with an OBD tool be enough to reset any warning lights once the fluid shot is burned off?

2) how thin are the walls of the exhaust manifold? can they be tapped with threads? ...i would like to hear suggestions about what type of injector i should either tap or weld into place. Should it be a threaded receptacle (threaded nut looking contraption) i weld into the wall of the exhaust, then screw in some type of injector nozzle like from a paint sprayer or NOS system? or is the radiator fluid too thick for a 60 psi pump to properly atomize through nozzles set up for more viscously thin fluids? I think i should try to get some kind of 'spray' injection in order to avoid dumping cooler fluid on the interior walls of a hot metal manifold to avoid cracking. Or is the exhaust flow, and PSI in the manifold high enough to prevent fluid from collecting in one place long enough to cool the walls to the point of cracking...suggestions?

3) can a suggested type of injection nozzle (or saddle & threaded nozzle) be installed within 'easy under hood working reach' of the exhaust manifold without removal? My truck is the test subject, and i'm making this work on a shoestring budget, and minimal downtime for my daily driver.

3) i believe i could (worst case scenario) add injectors past the converter, but it wouldn't heat up the fluid as well, and make much less smoke. thoughts?

this might seem like an odd set of questions, and i may not be thinking of everything, but if i could make this work, i may be able to get a much needed contract to keep my shop in business....any suggestions would be greatly appreciated.

thanks for everyone's time
nick colton is offline  
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