cjernigan

iTrader: (13)

You can put some methanol safe foam in the tank to keep it from sloshing as well. People use it in fuel cells often.

magnamx-5

iTrader: (7)

yep foam can help with starvation issues but this is also why a full tank on the track and proper tank placement is crucial if you pump is pulling up hill wich in my opinion it shouldnt then you will have more of these issues than if you allow gravity to help fill you lines.

Mymiataflys

so by pulling up hill you mean like if the pump is mounted higher than the pickup in the tank ?

miatamania

iTrader: (9)

He is tuned off meth, had a 19 psi map and a 30 psi map. Just kinda happened real quick. And the meth showed it WAS working when it wasn't and it killed it.

Car still ran though with almost no compression...did the whole James Bond Smoke Screen Thing. Pretty impressive.

magnamx-5

iTrader: (7)

Miataflys yes i mean just that.

Philip

So? He was tuned off the meth but running the map tuned on the meth? and the motor went boom when the meth stopped flowing? duh.

Relying on meth is a bad idea.

Ben

iTrader: (33)

After you **** with timing a few times, you learn how to set it by feel. I can get base on my car +/- 1 deg of target without a light now... which is really about the same precision you get with the gun.

BTW, **** is a sterile solution.

Ben

iTrader: (33)

Aside from the engine damage issue posed by not lowering the intake temps, I'd also be worried about the pump sucking air through the system. Which could not only burn up the pump (most pumps rely on the liquid they are pumping for cooling and lubrication) but also it would stuff additional air into the intake charge.

eunos1800

Ben i've ben using the Devils own pump for a couple of weeks now.

It's self priming, so if you get a air bubble it does pump through it.

I tried several times in various ways to drill and fit a pipe to feed the pump, i just could not get a good seal on plastic tanks, they all leaked.

So when i went for my go-kart tank i used the stock top feed location, so far i've had no problems.

I specifically drained out the water and ran the pump dry 3 times, every time when i filled it with water again the pump self primed.

I also believe the pump has a thermal cut out no?


Cheers
Mark

magnamx-5

iTrader: (7)

no thermal switch i dont think it has one. my tap worked for me but i used automotive goop and JB weld as well as a bulkhead fitting designed to be used in tapping the tank from Snow.

Ben

iTrader: (33)

I'm not thinking of an air bubble or two getting pushed through the system. I'm thinking about what happens when the tank is completely empty and the pump continues to run.

Case in point. On Friday I witnessed this phenomena.
We could get a car to crank and run for a second off starting fluid, but it wasn't getting any fuel, so as soon as we stopped spraying, it would stall. We hypothesized that the fuel pump had failed.

In getting to the fuel pump, we found some hairline cracks in the supply hose. It turned out, the car's fuel pump was drawing air through these cracks, instead of fuel through the hose. What was doubly interesting, was that there was no visible fuel leak through the cracks. I wrapped the hose in duct tape, and fuel came through the system and the car ran. At that point, I cut in a new section of fuel hose and the car is fine.

Point is, the pump doesn't care what it's pumping. Water, meth, urine, air. Whatever's at the pump inlet is going to get pushed through its outlet and eventually into the motor.

No idea if your pump has a thermal fail safe or not. But many a pump has burned up from running after it's supply ran dry.