clemsondave

Whenever my car sits for apx. 2 weeks, my meth kit fails. I have to pull the pump and remove a yellowish jello looking substance from the head. Has anyone else run into this? Any ideas how to prevent? I'm using World Wide Meth non lubricated.

cracker

iTrader: (1)

Dont use a meth kit.

cablebandit

iTrader: (37)

i wont say it but i am thinking it


are you using straight meth?

clemsondave

That is all I have ever used. 100% World Wide Racing Methanol, no lubricant, no mix, etc

Drewstein

Meth = bandaid and bandaids fail...

Just be glad you found out it was clogged before things went south.

ChevyChad

iTrader: (50)

Is anyone else having this problem?

clemsondave- what kind of pump are you running? Is it an alkycontrol unit? I know some pumps aren't rated to handle 100% meth...

LittleRedZ

iTrader: (5)

everything fails, everything
why did you buy D1SC, you do know they fail too right?

RW99

My guess would be that there's some sort of oil in contact with your 100% methanol, causing an emulsion to form... hence the jello. Does your pump require lubrication? Have you been adding some sort of oil to it when you put it back into the system? What is your reservoir material? Are there any baffles present... if so, what are they made of?

clemsondave

Thanks for the ideas. I have never added lubrication or oil to the meth. 100% meth. That is what the manufacturer recommends. Tank is a brand new windshield washer tank on a C5. Stainless lines. I never even drilled the hole for the windshield washer pump.

RW99

Be aware that 100% methanol will corrode stainless steel. But I don't think that it would cause any sort of gel formation. I wonder if the washer fluid tank is leaching some sort of plasticizer? Although then you'd think the walls of the tank would have a slime of some sort. Since you're removing this goop from the head of the pump I have to think that there's some sort of interaction right there at the pump; perhaps some sort of internal seal or lubricant? How much goop are you talking about here?

Drewstein

Apples and oranges.

So will my 402... in 30 years.

It is much safer to build something where the failures that will happen wont be the cause of other failures. Meth has caused more motors to go boom when their pump fails or it gets clogged ect...

If my fuel pump fails the car shuts off. But at least I still have my $15K motor intact.

mdhmi

iTrader: (1)

Good luck on that. As for meth - it has a place. I run meth for added safety and for controlling IAT's when beating on the car during the summer heat.

I've run out of meth on 700 rwhp dyno pulls and the motor didn't flinch.

RW99

Not all complexity is bad. Particularly when it's not that complex. Buy an Alkycontrol system, plumb it correctly, keep the tank full, and use a wideband with a relay for an alarm. If it goes lean, I'm out of the throttle.

As for me, I'll take the IAT's at 30 degrees or more below ambient after my intercooler and methanol. Safer, I would argue, than pushing an FI setup at higher IAT's.

clemsondave

Not asking for a debate on whether I should use it or not. It is everyone's own decision. I have (or will have) a few tunes. I will use a tune that needs the meth for the track only. If I test purge before the run, I am willing to take the risk that it will not fail in the following 10+ seconds. The other tunes are more conservative and will not rely on meth.

It is a very small amount of the yellow substance. I pulled the tank, lines and pump. Flushed it all really well. Hopefully, that will solve the problem. Maybe, like you said, there was some substance on the walls of the new tank that reacted to the meth.

bboyferal

iTrader: (9)

Hey, bandit...

Still waiting on an explanation! No more winks! Talk!

Frost

iTrader: (45)

Hey Dave...

Not sure what it is, but my car has seen 3-5 week stints where I was travelling this year and it sat and have never had any type of clog also on the 100% without oil. Ask Julio what he knows about it maybe.

LittleRedZ

iTrader: (5)

Youre a clown, im not even going to discuss this with you and ruin this guys thread.

cablebandit

iTrader: (37)

he said "remove a yellowish jello looking substance from the head. Has anyone else run into this? Any ideas how to prevent?" i am thinking CONDOM

TS6

iTrader: (41)

If your motor lasts 30 years under frequent use with 700+ RWHP I'd be amazed.

Secondly, don't be so sure about your fuel pump theory. The only way your motor will just "shut off" is if the pump fails completely. I have personally witnessed a couple "high end" pumps (Aeromotive FWIW) start to fail and lose pressure. The magnets came loose IIRC and even though the car ran fine, we lost many lbs of fuel psi and had we not noticed we would have grenaded something for sure.

I have also seen walbro style in tank pumps do this, in fact in one instance the guy had an alky kit that saved his engine as it provided just enough fuel to keep the engine from detonating when the pump dropped pressure on a pass.

Alky is no more a band aid than using high octane fuel, A2W ic's, or multiple fuel pumps.

Drewstein

The fact you needed meth to pull a 700rwhp number explains why it didn't flinch.

Glad to know you're using more to do less...