OK nitrous racers.....

Just wondering who makes the best (most rugged, dependable) Wide Open Throttle switch/bracket to activate the nitrous/gas solenoids...

The one that came from NOS with my Pro-race fogger is pretty wimply and I was wondering if other billet or more rugged units might work better on my 950 HP Holley.

I noticed Quick Fuel Technologies and Compotition Motorsports both make pretty neat looking units.

Any word of wisdom/experience would be greatly appreciated.

Rich Hexemer
69 Chevelle SS396

Rugged? Dependable?

I use the standard microswitches you can buy at any electronics store with the arm you can bend. A small 90 deg bend tab for the front pass carb bolt and bend the arm so it hits at almost WOT.

I use relays so I don't care about how many amps the switch can carry, and about being rugged or dependable, I have used the same one for several years - never failed me.

I would save your money and make yourself a mounting tab and use regular microswitches - I bet they do anyways.

Hey Ryan,

I figured you'd reply here.....

Its been awhile since we talked. How's the 632 doing? I know you block a wrist pin with your fogger busted up, no traction, and the wrong pin right?

How did I know you would just make something up Ryan????

I thought you'd have a whissy setup? LOL!!!!

I'd rather run a billet aluminum bracket or more sturdy steel tab that the micro-switch is attached to so there's absolutely no flex. Yep, I'm running a power relay as the pro series solenoids pull soemthing like 25 amps or more.

Give us an update on your motor when you have a chance!!!!

Later,

Rich

Competition Motorsports is Rock Solid and works every time. Very sturdy. Good luck

Frank

I looked up the competition motorsports switch - it uses the same $3 switches that I use. Make a bracket for a couple of bucks and you can have the same thing (less the logo) for $5.

;)

(The fogger worked great! I clearly had the most horsepower at the event. Broke a wrist pin, plain and simple. JE sent the wrong pins for my application. Will be back in action before long. Heard a rumor about a blue chevelle on the cover of Aug Hotrod?)

(The fogger worked great! I clearly had the most horsepower at the event. Broke a wrist pin, plain and simple. JE sent the wrong pins for my application. Will be back in action before long. Heard a rumor about a blue chevelle on the cover of Aug Hotrod?) [/QB][/QUOTE]

That would be a cool rumor, good luck Ryan.

I ordered a Competition Motorsports carb switch, good looking unit. A pretty simple design, but paying for the name. It wouldn't fit my carb w/o modification so I sent it back and made my own. Looks as good as theirs, but way-cheaper.

Thanks for the advice/feedback!

I ended up ordered the Competition Motorosports switch/bracket assembly for my HP.

It looked pretty nice/solid on their website, so what the heck..... I'll give it a shot, worst case I may have to modify it some or just improve upon it....

I have another question guys....

Whats the best way to calibrate my fuel flow/pressure on my fogger? I know that Edelbrock sells a kit that has a bunch of jets. I convert my jet size (8 jets) to one jet, then under load set the fuel pressure to 6.5 psi, right?

What's the most accurate/best way and equipment to use to go about this?

Thanks.

Rich,

Don't be doing anything under load!

I'm not familiar with the edelbrock kits - does it give you a suggested flowing fuel pressure for each jetting? Does it mention a flow jet size?

Here's how NX does it - they say 8 to 10psi flowing (start at 10) for their jetmaps and they tell you what test jet to use for each. In their case, yet, it's the same as the square root of 8x(jet^2). But some systems use the same jet for all flowing fuel pressures. It is only a reference.

So you take one of the -6 lines off the inlet side of your fuel solenoid, then to your flow kit which consists of a -6 fitting, a fuel press gauge on a tee, and last a fitting for your flow jet to fit into then into a bucket. Turn on the fuel pump and set "flowing fuel pressure" just like it sounds.

The fitting for the jet can be made easily by cutting the flare off a -3 fitting - the nitrous jets fit right where the flare was.