Check my DIY alky kit wiring please

[blueta]

Ok, here's how I wired my alky kit. Tell me if this is ok: Relay #86 went to 12 volt switched source (maf wire). #85 goes to the pressure switch (also grounded to body, and negative for "on" light @#85 before pressure switch). SO 3 wires are going to the switch (one body ground, 1 negative light, and 1#85). Pressure switch goes to ground on the pump. #87 goes to the pump power wire. #30 goes to 12 volt constant (back of alt). Does all this sound right? Thanks in advance!!

 

[Razor]

I would wire the light across the pump.

In this case hook the light to 87 on the relay. And use a fuse on your feed to the relay 30.

 

[DMan]

I would avoid using the MAF power wire as a switched source. Gotta be some other things you could use.

 

[blueta]

What's wrong with the MAF wire? Another thing I did was ground the pump to the car and just use the switch for grounding the relay. Also put the light on 87. Everything seems to work now. I had some irregular knock (22psi) sometimes 0, sometimes 2, sometimes 5...then I realized I had a leak . Will test again tomorrow. Thanks guys.

EDIT: Another thing...what PSI should I start the flow at? I had the switch set at like 5psi by accident and it seemed to spool REALLY slow. Maybe like 17-18

 

[Razor]

I would avoid using the MAF power wire as a switched source. Gotta be some other things you could use.

Why? Comes rite off the fuse box, and a relay draws practically nill to activate.

 

[Razor]

EDIT: Another thing...what PSI should I start the flow at? I had the switch set at like 5psi by accident and it seemed to spool REALLY slow. Maybe like 17-18

Typically turnon on a hobbs style system is approx 8-12 PSI.

You need alky into the motor before it can start to knock. Remember it takes time for alky pump to kick on, start to spray, get into motor, etc...

A twin stage system can be fired at 5 PSI and 15 PSI or 5 PSI and 20 PSI.. depends on nozzle sizes, pressure, fueling, etc.

Progressive systems are fired at 4-6 PSI typically.

HTH

 

[DMan]

Why? Comes rite off the fuse box, and a relay draws practically nill to activate.

Just a dogmatic preference to stay away from circuits feeding feeding sensors. I use the fuel pump circuit. But if the relay draw is next to nil as you say then there is no fear of loading it.

 

[blueta]

You guys are gonna have to pardon my stupidity but what pressure should the pump be around? And how do you check this? I could probably hook up an extra oil pressure gauge I have laying around. Also, what mixture of alky/water? I used denatured 1 part to 2 parts water. Is this ok? Thanks again.

 

[blueta]

Knock knock...

Well now that it's all sealed up I took it for some road testing (scanmaster 2.1). First gear usually no knock. Shifts get 2*-3* knock and it STAYS. Is it supposed to go away or does it continue to read that # while it's at WOT? Also sometimes I get no knock around 45mph, then sometimes 2 or 4 etc. Also at 73mph it jumped from 3 ALL the way to 15.5 I'm using a .032" jet. Could it be that I stepped my hoses from big to small? I have about 7" of 1/2" ID tubing going from my tank to the pump. Then another 3-4" of 1/2" going from the pump till I neck it down to 1/4" (I think). Or could the pressure be too low on the pump? Too small of a jet? Need some help. Alky starts @8psi. Thanks!

 

[PaCemkr86]

nice firebird !

 

[blueta]

Thanks!

 

[blueta]

Ok...did some more testing etc. I found out that the KR from the scanmaster stays unless you hit recall during the run so that's ok. I also did a pressure test on my pump. It's a 45psi pump with the adjusting screw in the top. The pressure with the screw (regular screw, not allen head) turned all the way in is only 30psi I'm thinking since it's a regular screw that the head is hitting the pump before it goes in enough so I'm gonna try a longer one to see what happens. If the pressure doesn't go any higher what are my options? My pump flows more GPM then the regular 60psi one but less psi, so I was thinking that a bigger jet might do the trick? I'll get a new pump if I have to but I would rather try to make this one work first before dumping any more $$ into this kit. Thanks again!

 

[blueta]

Ok, got a longer screw and turned it ALL the way in and the pressure didn't change really much It's up to about 40psi now (REALLY hard to read the gauge with the needle bouncing around like lightning), and when I activate it while the car is running at idle the idle doesn't even change at ALL. I figured it should have at least bogged a little or something. Another note: My nozzle is mounted right below the bend in the upper intercooler pipe facing towards the radiator. Is this ok, or is it too far away?

 

[blueta]

Alright, mounted it after the bend now and got an even longer screw. I can get 60psi now and everything else seems to be working great for now. Thanks guys!