Finally tested the alky control

[fc227]

Hello all,

I was up at NED sunday. I finally decided to turn the alky/water injection on. I was still running C16 fuel so I set the pump speed to min. and turn it on at 19# for the first time trial. the car picked up 1 mph thought the traps.

So for the second time trail I set it to come on at 18# and the car picked up 2 MPH (this was judging for staurdays results /the conditions where the same). running around 96 MPH on saturday

The car run a 13.56 @ 97.46 MPH first pass , it warmed up alot for the second pass the car ran a 13.60 @ 98.28 mph @19-20# boost.

First round the car spun coming out of the hole and I had a bad bad reaction time (.834) and lost first round. I would have had the guy covered becasue I dailed a 13.6 and the car ran a 13.62 @98.92mph in the 90° heat.

I will play with it again this weekend on pump gas.

 

[blackbuick87]

Those are great times for a carbo. What do you use to monitor knock without a computer?

 

[fc227]

My ear(s) , and I wacth the boost gauge to see if it starts to creep.

I'm going to get a EGT sometime , But I'm going to build a Knock detector. Because my car uses the old ESC box. I'm going to monitor the signal off the sensor it self. I already have the circuit drawn up I just have to build it.

 

[AnArKey]

Originally posted by fc227
I'm going to get a EGT sometime , But I'm going to build a Knock detector. Because my car uses the old ESC box. I'm going to monitor the signal off the sensor it self. I already have the circuit drawn up I just have to build it.

Sounds interesting. Could you elaborate on it a little? I might want to build something similar.

 

[fc227]

Well, I just got though building and testing (basic test) a knock detector for our types of car’s (ESC, the old non computer cars). It works by reading the signal of the Knock sensor it self and I made it with a sensitivity adjustment so false knock can be tuned out. It uses a bright LED & a warning Buzzer (I'm going to mount a remote buzzer for the helmet) but it works. Now I can really test the alky on pump gas.

 

[fc227]

That works on the older non- computer car's.

 

[fc227]

What type of knock sensor is used on the compter controlled car's?

 

[fc227]

Well, Hoping to get more track time Friday the last weekend that LVD is open this season. Since My last post I have install a cowl mount Hood scoop and made up a carburetor air pan (offset because the scoop id mounted in the center of the hood.) A semi straight shot into the carburetor.

Since traffic is so heavy in my area, I really don’t have a safe place to “lean on it”. (And Moroso doesn’t like us doing burn outs in the parking lot ) So I have been doing break standing testing in my yard, I was Running 22-24# of boost on pump gas with the Alky on full. But it was rattling a little (Knock detector works ). So I installed a bigger jet. So If I get a chance tomorrow I try it again, or I’ll just run Race gas on Friday. I rather blow a gasket at or near home instead of 135 Miles from home.

This maybe my ticket into the 12’s.

 

[salvageV6]

I think Mark H. mentioned a good test road is the ramp off the highway to Hammonasset State Beach/Park.

Might be worth checking out.

Our Dragday that was planned for today was rained/snowed out.

I am sure this weekend will be crowded.

Good luck running, remember more fuel/alky. in the cold.

 

[fc227]

I know where that stretch of road is. Too much traffic every time I have gone that way.

I also forgot to mention I also installed a vacuum pump, I can’t use it on the street because it spit’s oil out of the catch tank filter on long highway trips. But I can run it at track. It pulls 11” of vacuum @ 2500 rpms.

Working at Moroso has its purk's .

 

[BADINBLACK6]

fc227 how did you hook up the alky injection on the carburetor?

 

[fc227]

Injecting after the turbo. Right at the turbo elbow. Using a Ford pump, NOS nozzle, and a variable speed PWM boost sensing pump control.

 

[fc227]

Well, it turns out the scoop does exactly what I expected, It leaned the engine out big time. I had to go up four-jet sizes. The stock carb hat was restrictive. I have run 19-20 # boost on pump gas & a 50/50 mix of H2O & methanol (and some lube).

Now That LVD is closed for the season, I friend at work offered to tow the car down to Atco later November. Sounds like the ticket. I can lean on it, and not worry about breaking and getting home.