Devilsown Methanol Alcohol Water Injection - View Single Post - Paxton blow-through

shawn · 05-13-2007

hi,
I'd like to start by saying it's nice to have a company/forum that supports their product. I'll also say that since we have bought a brand "S" injection system we've got nothing but uniformed confusion from them. Hopefully someone here can at least tell me if we can salvage something that we already have by adding some of the D.O. products.
We currently have the "big" system (whatever that means), a plate with two nozzles, and the controller. The engine is a 363" sb ford with a Novi 2000 Paxton and a 750 carb in a blow through box. It made 1023hp at 25lbs of boost. I currently have 23* of total timing in it and it's run on race fuel. The nozzles themselves are a bit of a mystery because we were told "this is what you need", so i'm not sure even what they are.
Now onto the problems. Our inlet temps when it goes in to high gear are around 250*. The air temp sensor is directly below the plate in the plenum area of the intake. The numbers recorded with or without the injection operating are almost exactly the same. I know that the system is working because the levels in the bottle go down, and our a/f ratio goes rich on the passes with it functioning. I have an idea as to why we don't see a drop in temp. One is that the temp sensor being only about an inch from the plate isn't giving the water/alcohol mix enough "time" to heat sync with the hot inlet temps. Which is why the air temps remain the same. The next one is that we simply don't have enough nozzle to effectivly cool the charge. One idea i had was to move the nozzles from the plate to the outlet of the supercharger, giving it more time to cool. Another idea is one that i stole from Steve Morris, to actually put it in front of the supercharger inlet. Which leads to the next problem. The carb is enclosed in the Paxton blow through box, which means the the water/alcohol mixture is going to be sprayed around the whole thing, carb, linkage and all. Not a very good thing. I don't have a problem putting a regular bonnet on the carb, if relocating the nozzles are going to do what we want. It may be that we are beyond what a system like this can do?
In closing i would like to say that i'm an engine builder, so i do understand the mechanics of an engine, as well as the benefits of a product like this. I just don't know what the limitations are. Your thoughts are appreciated.
thanks,
shawn

05-13-2007	#1 (permalink)
shawn Water Injection Newb Join Date: May 2007 Posts: 3	Paxton blow-through hi, I'd like to start by saying it's nice to have a company/forum that supports their product. I'll also say that since we have bought a brand "S" injection system we've got nothing but uniformed confusion from them. Hopefully someone here can at least tell me if we can salvage something that we already have by adding some of the D.O. products. We currently have the "big" system (whatever that means), a plate with two nozzles, and the controller. The engine is a 363" sb ford with a Novi 2000 Paxton and a 750 carb in a blow through box. It made 1023hp at 25lbs of boost. I currently have 23* of total timing in it and it's run on race fuel. The nozzles themselves are a bit of a mystery because we were told "this is what you need", so i'm not sure even what they are. Now onto the problems. Our inlet temps when it goes in to high gear are around 250*. The air temp sensor is directly below the plate in the plenum area of the intake. The numbers recorded with or without the injection operating are almost exactly the same. I know that the system is working because the levels in the bottle go down, and our a/f ratio goes rich on the passes with it functioning. I have an idea as to why we don't see a drop in temp. One is that the temp sensor being only about an inch from the plate isn't giving the water/alcohol mix enough "time" to heat sync with the hot inlet temps. Which is why the air temps remain the same. The next one is that we simply don't have enough nozzle to effectivly cool the charge. One idea i had was to move the nozzles from the plate to the outlet of the supercharger, giving it more time to cool. Another idea is one that i stole from Steve Morris, to actually put it in front of the supercharger inlet. Which leads to the next problem. The carb is enclosed in the Paxton blow through box, which means the the water/alcohol mixture is going to be sprayed around the whole thing, carb, linkage and all. Not a very good thing. I don't have a problem putting a regular bonnet on the carb, if relocating the nozzles are going to do what we want. It may be that we are beyond what a system like this can do? In closing i would like to say that i'm an engine builder, so i do understand the mechanics of an engine, as well as the benefits of a product like this. I just don't know what the limitations are. Your thoughts are appreciated. thanks, shawn