Lasershop

iTrader: (2)

LS1, all forged stock bore and stroke 347. Twin 60-1 turbo maybe 10PSI. What size (GPH) methanol injection nozzles for a 'semi' direct port (8 nozzles) custom setup? Looking at a 150PSI pump. "Semi Direct Port": nozzles in the plenum pointing directly into the runners.

Also, what size metal lines? 3/16", 1/4"?

mrstepheneades

I run twin 10gph on my ls1 21psi with pump gas. 20/8= roughly 2.5gph nozzle per runner to equate to what I run now. I wanna see you do this setup because im also wanting to do it eventually with a super victor intake. Maybe step it up to the 4gph per runner. Think my pump with my AIS kit said it was 250psi. Cant remember what my line size is. I know you make some awesome looking stuff.

Lasershop

iTrader: (2)

Thanks man. That was very helpful to give me a starting point.

mrstepheneades

I plan on well exceeding 1000rwhp on 93 pump gas on a 5.7ci platform in the future. More methanol is on the horizon lol. That will obviously be on a forged engine and bigger turbo. Make some shinny stuff man lol.

Guard dog

Go with eight aquamist checkvalve nozzles. They atomize the best and will stop flow with the checkvalve so meth doesn't dribble into your intake coming off boost or under vacuum. You can get those in 2.5 gph too.

stevieturbo

Although at only 10psi....really not a lot of point in methanol unless you're very high compression

Forcefed86

iTrader: (4)

I agree a direct port setup is overkill for 10lbs of boost.

Also you don’t give enough information to give a good educated guess on nozzle size.
Are you talking about 100% meth? 50/50 mix? Washer fluid? Etc…
Is your pump gas 91 or 93?
What compression is the motor?
Redline?
What cam?

Twins on your setup aren’t going to heat up the air a ton at 10psi. If running a 50/50 mix you should be fine with a single 12gph nozzle pre TB. Double that with straight meth.

You also have to pay attention to pressure. With multiple or very large nozzles you may not see 150psi with a “150psi pump”. Also a 12pgh nozzle flows 12gph at 100psi. At 150psi it flows 14.6gph. The new pumps these days put out 250psi, 12gph nozzle would flow 18.9gph at that pressure. So you really need to know the systems pressure to calculate the nozzle sizes accurately.

Lasershop

iTrader: (2)

I have the motor in the car. Dont have the intake bolted down yet. Had to finish a few things. I dont really know how much boost I will end up with. This is more for maybe the future but to have it done. I have a vision of how I want it to look (the meth install). Once the manifold gets bolted on I move on to another part of the car. Just finished my fly by wire custom setup. Came out awesome.

mrstepheneades

In saying this my twin 10gph nozzles are really putting out 30gph lol. That's good to know.

Lasershop

iTrader: (2)

Interesting. Does anyone use a regulator?

Forcefed86

iTrader: (4)

You’d need a regulator capable of high pressures. Not common, esp one with a rising rate regulator. Most alky pump heads have an adjustable bypass of a sort. Not good for huge changes and they are very touchy.

Another fun thing to deal with is your boost pressure acting on the opposite end of the nozzle. So if you run 20lbs of boost and 150psi head pressure, the nozzle is only flowing 130psi.

The Alchemist

iTrader: (19)

Check into Aquamist like others stated. I run it, and it's a kickass setup. It regulates the pressure to 160psi and uses a check valve to pulse the nozzles much like a fuel injector does. So unlike other setups that ramp up the pressure to gain flow, the aquamist stays a constant 160psi and uses a fast acting valve (FAV) to regulate flow. The system is based on injector duty cycle, so as that rises, so does the rate of the FAV.

Aquamist actually has a flow calculator for you to determine what size nozzles to run based on what fuel you plan to spray, and how much % of overall fueling you want.

http://howertonengineering.com/tech-...ating-jetting/

stevieturbo

Unless you've actually confirmed pressure available, and are taking boost into account etc....that's just an assumption.

But really it makes no difference at all anyway, because virtually nobody is injecting methanol based on flow or need anyway.

You just fit a big nozzle or two and dump loads in with no flow control whatsoever.


Only the Aquamist as mentioned above generally offers an ability to control flow, unless you're doing a full standalone and using it to control flow.