Staged Second Nozzle - SMC

[salvageV6]

Here's a link to some pic's. of the staged second SMC nozzle I put in.

Trigger the NOS alky. solenoid at 20psi. with a Digital Pressure Switch which can be programmed at any psi. number and is accurate to 1/2 psi. Relay output.

A hobbs switch would work just as easy but would need calibrating to be accurate.

Also a few pics. of the alky. bottle bracket prototype I made.

Just cheesy krylon black paint and it's been in and out of the car numerous times so there's a few paint chips.

http://members12.clubphoto.com/allan631980/942876/owner-0a12.phtml

PS: Bracket is isolated with a square washer of Fiberglass G10 board about 3/32" thick otherwise the aluminum would heat up too much from the exhaust housing. Same thin G10 board is used under the solenoid with some red RTV for vibration isolation.

 

[Bens87tr]

Damn, Al. Very creative. Sounds like a good idea. Any results on how it runs?

 

[salvageV6]

Only had it over 20psi. twice since last weekend, rain and traffic.

Gonna hook up the direct scan this weekend and set the whole tune for racing next friday.

No bogging when I tried it.

Ran good and strong just hoping for a bit more flow to kill any hint of KR at 24 or more psi.

Gotta hook up the 2 wastegate solenoids for race setup and the thin LVD air.

No problems yet so far.

 

[blackbuick87]

I am not familiar with NOS solenoids so try to bear with me. The solenoid is electrically triggered? If so where is the switch that triggers it?
That bracket looks real nice, who made it for you?
Where does the other nozzle go in at?

 

[salvageV6]

Yes the solenoid triggers on 12 volts and draws 1 amp. I think.

The switch is on a digital pressure switch I bought that hasn't been marketed yet. Has 5 settings you can program.

I use it to log boost 21, 22, 23, 24, and 25 psi. It can be programmed to any 5 boost or vacuum settings. Has relay outputs, I built a display for mine, when the relay latches it lights up LED's, pics. to follow someday on that thing....

You could easily trigger it with a Hobbs type switch like the one that is currently in the SMC kit. I think NOS sells the switches too.

Ground one side of the solenoid and provide +12 through the switch to activate it.

The first original nozzle is in the lower part of the uppipe and you can see the pipe into it in the side angle pictures.

The second nozzle is up top near the throttle body. Steve at SMC thought it would work okay. Gonna find out soon.

Lastly the bracket was made from 1/4" thick angle aluminum bracketry which I think is 3" per side. Machined down by our machinist in his spare time with my measurements.

The bracket was solid and bolted to the turbo bracket but after the first ride got real real real hot. I put a spacer of heat resistant G10 stuff on the bracket mount area and under the solenoid. And the bracket was clearanced with the cool holes by the machinist. Bead blasted to a nice finish.

Came out good.

 

[yellow95]

Can you get anymore of those digital pressure switches? If not, do you know of anything similar?

Gary

 

[CaPPY]

Nice bracket!!! You better hope that Zap doesn't come over here to see it or he'll want you to make one for him, to put his beer can on, while he's sitting in his engine compartment.

I use a Hobbs to fire the second stage...I'm not as lucky as some people I know that have an electronics firm at their disposal.

 

[salvageV6]

Yeah when it wasn't clearanced for air and the solenoid wasn't installed that's where I put my beer.

I didn't design or make the DPS unit Eric Marshall who is known as Eric StageI here got it for me.

Kinda expensive at $280 but it is a neat programmable device.

Along with my custom display I can trigger it to latch what boost my alky. triggers at within 1 psi. without looking at a boost gauge, just floor the car.

Also allows me to accurately set my wastegate and exactly know what peak boost I am making on a WOT pass, again without looking at the boost gauge.

I have problems with looking at gauges at WOT.

I will get some pic.s of that setup next week.

Edited for bad spelling.

 

[Turbo__Tim]

Very nice! You're anal side is showing. too much coffee...

I like the guage on the spray out line. Great for checking consistancy...

I don't know what you could use to color the bottle the bottle. that is some hard plastic. Maybe some light sanding, and epoxy paint?

 

[salvageV6]

Well found a few problems with the setup today while getting her ready for racing on friday. Track rental. and

Original early style alky. nozzle in the lower uppipe has a soldered fitting which snapped at the solder connection. It was hard pipe plumbed in there and broke due to vibration of the engine and turbo.

Gonna redo the whole plumbing of that nozzle and use the OD of the pipe fitting to swage into a 1/4" ID of an NPT fitting and silver solder the whole deal.

Flexible braided hose will be used for that nozzle so all vibration hopefully will be contained in the hose and not stressed into the NPT fittings or the soldered joint.

Also got the NOS solenoid screwed tight to the bracket and got rid of the ugly red RTV.

If that snapped whilst racing a whole lot of alky. woulda sprayed the motor and there woulda been lots of detonation.

Price of progress I guess.....

Shoulda done it right the first time...

 

[Buick Beginner]

FESS UP

Salvagev6 -
More info. on the Digital Pressure Switch which can be programmed at any psi., PLEASE.
-BB

 

[salvageV6]

What do you want to know?

If I get the camera I will take a pic.

It's based on a pressure transducer coupled to a PIC microprocessor and display with a relay output board.

You first calibrate the thing with a good gauge to say 20 psi.

Once it's calibrated you can program the outputs to any 1 psi. from 1 to I dunno over 30 I guess. Never needed that high myself.

I run the outputs to a box with LED's that will record the peak boost from 21-25 psi. to fine tune my wastegate.

Also set it up at 10-15 psi. for alky. trigger tests.

Eric Marshall Eric StageI got it for me.

Never came out into production perhaps due to pricing and potential customers.

5 Hobbs switches and a LOT of tinkering can do the same thing sorta..... .

This unit is a lot easier for me and worth the $280 or so I paid for it.

Not much else to say. Pics. to follow someday.....

 

[salvageV6]

Pics. are up of the alky. setup replumbed with hose to both nozzles much better.

No RTV on the solenoid now it's bolted to the bracket.

Also Pic.s of the DPS digital pressure switch box and the relay board that's stuffed under the radio pod. with the ribbon cable coming out of it that goes to the display.

Ooops forgot a pic. of the display on the top of the dash.

Oh, well, next time.