Hello all,

New to the site, member of the 3rd gen Camaro org sharing the same 350 L98 engine in my 1989 IROC as you Corvette enthusiast.
Engine specifics are: 355Cu, GM Hot Cam, AFR 195 Aluminum heads, 60lb injectors, Vortech Supercharger, Alky Water Injections, 6 speed manual.

I'm looking for feedback on where to locate the Water Injection nozzle.
AlkyControl's advised right before the Throttle body, after the SC and Diverter valve, stating it was the simplest way to inject the water/meth.
I was reading a post from "SuperL98" (he has a post here on building the flow meter bench) over on the Camaro site on flow dynamics of the upper intake and how he had a similar setup but suffered piston failure under boost on cylinder 1&3, working through the theory that the water vapor entering the upper manifold could not make the sharp right turn to go down the tube 1&3 until it bounced off the inner wall and came back.
I am considering locating the water injection nozzles (possibly two for each end) in the upper manifold, after the throttle body. It will require a solenoid to prevent syphoning instead of the 10PSI check valve being used before the throttle body.
The idea is to get the water vapor closer to all 8 tubes transitioning down in the the lower manifold.
Has anyone mounted their water injection nozzles in this location and how did it work out?


Upper intake, upside down, showing where water injection nozzle would be mounted to spray inside intake manifold when boost exceeds 10psi

 

Moved to C4 Tech for some help with your questions.

 

welcome

 

Before I changed to IC I ran the blowerworks system. Their nozzles completely atomize the water into a fog, not just a mist. I never had any problems with it.I had it a few inches before the throttle body.

 

I would spray it directly into the blower inlet just like the krauts did. What size nozzle(s) and what fluid mix do you intend to use? This might make a difference regarding the best location(s).



Note: I've never used any form of water/methanol injection myself, but I have played a role in tuning a few cars that were so equipped. I use an air to air intercooler in my own car.