problem with methanol pump

[Grimster]

I took some video of the pulsation as to better illustrate what I'm experiencing.  Take a look and let me know what you think.  My knee jerk reaction is to put a bigger nozzle on...but I dunno....

https://www.youtube.com/watch?v=kcKB3ElOr9Y&feature=youtube_gdata_player

Btw - I'm only using washer fluid that has methanol, water and a tiny bit of blue dye.  So don't be alarmed at the blue color, haha.  I'll end up mixing my own later, but for now at least during the testing of this system that's what I'm using .

 

[EcoBrick Bob]

Is the spray from the nozzle also surging? 

Remember, all these Shurflo pumps work the same way.

When you go to a larger nozzle, you have to have adequate pressure to atomize the liquid coming out of it. This pump should be fine if you're sure you have adjusted it to max psi, but I did go to a higher pressure pump, and turned it all the way to full psi.

 

[Grimster]

I have adjusted the pump to it's full output (2 more clockwise turns of that screw) so I should be at 160psi according to the install literature I have.  The surging is still there, but it is so fast that it is a fairly constant flow.  I am confident that it is working as designed and everything is ok.

I have datalogged the car and went through a couple of back and forths via email with Torrie to tweak the tune.  The car runs great and feels very strong. 

Only thing I might change in the near future is to change to a dedicated reservoir for the water/meth mixture instead of using the washer reservoir. 

Now I just need to find a free weekend so I can take the car to the track!  haha

 

[Timtoolman]

I turned 1/4 turn today  should be about 230 psi, it started. To quench the motor when letting off gas, primary nozzle is a #60 so I just raised the level to 8 lbs when it starts, no problem so far.
I did the dedicated tank 7 gals , last quite awhile.

 

[EcoBrick Bob]

The best solution is to use your current Windshield Washer Pump for W/M and add a small reservoir for spraying windshield fluid.  Actually, unless you are like BPD who is on his car WOT more than not, why add a tank.  If you continue to use WWF as W/M spray, it is really cheap.  Even when I was spraying 70+% methanol, at $3.00 a gal at Cedar Falls Raceway, I never added a tank.  Straight methanol really cleans windshields great!!!  Smells even better, and if bugs are really bad,  just light the stuff on fire and burn'em off!!!!

 

[redsand]

When you guys are logging with your meth running are you seeing a lower duty cycle on your fuel PID? Even with mine on I'm still seeing it hit 48%.

 

[Grimster]

When you guys are logging with your meth running are you seeing a lower duty cycle on your fuel PID? Even with mine on I'm still seeing it hit 48%.

Comparing my two logs I did - one with the performance tune without meth.....and one with the performance tune with meth...

Im hitting .48 on each (isn't that 96% of the pump's rated value?....not 48%?)

So the fuel delivery isnt being cut back....but the water/meth is being supplemented.  Allows for more aggressive timing...more boost...etc.

 

[Grimster]

tuned without water/meth

https://docs.google.com/file/d/0B_yXtQdpOi1bZWhfcEJ4dWc0bXM/edit?usp=sharing

tuned with water/meth


https://docs.google.com/file/d/0B_yXtQdpOi1bc215amg5VVE5elU/edit?usp=sharing



I still have room to grow with my methanol tune.  I'll keep it as is for now...I like the idea of a good safety margin on my daily driver

 

[4DRHTRD]

That's the lift pump (in tank fuel pump) you guys are seeing and that is going to be maxed out all the time during WOT. You need to be watching the fuel rail pressure, I can't get that in SCT but I can in torque. I've asked Tim Roi at SCT to add it, we'll see if they can.

 

[EcoBrick Bob]

I see FRP in my SCT logs..  I use an SCT 3.  Or am I missing something?  When FRP gets below around 1200, I got goosebumps, even when spraying a high concentration of Methanol.