Damn, the fuel must be under a lot of pressure.

 

Picking up on what JONSKI said, does anyone here have significant experience with designing/implementing fuel injection systems?

If yes, is a FPD something that is typically designed into the system? Would you say that it's necessary?

Finally, if it really is necessary to have a FPD, is there a more robust alternative to Mazda's part that we can adapt to the FD?

 

i searched for FPD's on the net and the only other cars that have anything about them are supras and mr2s.


maybe it's kinda like the AST thing....it's just there.

 

Yeah, that's what I'm thinking, but I'm one of the AST believers

It's probably a bad comparison, but everyone's probably been in a house with water pipes that bang when a faucet is shut off. I understand that they include sealed air chambers as part of the plumbing system to "buffer" the pressure variations and prevent that type of noise. Thus, if you do hear the banging, it means that the air chambers have filled with water.

So we have our 40-60 psi (?) fuel system-- could it suffer the same effects? Do the pressure changes in the fuel system cause major stress on the components if undamped? I'd hate to remove the FPD, then have a fitting or line burst from the effects of a shockwave.

OTOH, we already know that the FPD itself is of questionable durability. That's why I'm wondering about alternative FPDs...

 

so called "water hammer" usually occurs in plumbling systems when there is a sudden closure/restriction of flow, which in turn causes a violent shock wave to reverberate back through the system....I guess a high pressure fuel system might be analogous

interesting reading http://www.omega.com/techref/waterhammer.html

I'd like to know how many forum members with 100k+ miles still have the stock FPD in place

 

here is an aftermarket FPD. i don't think that it is made FOR cars, but would probably work. just use a T fitting and put it in line. I wonder how high G cornering would effect it?
http://www.matronics.com/fuelchec/dampener.html

 

Hmmm, looks like they designed it for airplanes, so I would hope that it would operate correctly under the G loads a car would produce. It's $47 including the T-fitting...