DIY_EFI Digest V2 #119

[Matthew Beaubien]

Thor,

> Do you have any idea how long the fuel system (VW Rabbit) and injectors 
> (Toyota Corolla 20lb/hr) will last?  Or any way to prolong their life?

>From what I've read, methanol eats away at the seat in the injector. You
may be able to add some lubricant for methanol-fueled engines, but I don't
know how much it would help.

> The only thing that has me worried is that the pressure regulator has 
> developed a squeek under ethanol (test fuel right now b/c our chemistry 
> department will give it to us; seems to burn roughly the same as the 
> meth, just more touchy about wrong mixtures), but it doesn't seem to harm 
> anything.  We have a Triple gauge (oil psi, volts,temp) with the oil 
> pressure hooked to the fuel line (doubt FSAE will allow this, so we have 
> 1/4NPT plug for the competition), and we haven't seen any funny readings 
> *yet*.

I'm pretty sure methanol is much more corrosive than ethanol, so watch out
when you switch over. 

> Any ideas for the bubble problem or prolonging the lifespan?

Not really. Sorry.


Matt Beaubien
mbeaubie at gpu.srv.ualberta.ca