Jeff20B

The 20B doesn't have one.



100 posts in this thread!

Dysfnctnl85

The head scratch was for "oil pellet mod." WTF?

setzep

I went with aluminum lines for a few reasons. Cost, I got a 25' coil of this stuff for ~20 bucks if I remember right. Ever price out 20' of the "AN" line not to mention the hose ends. With the line I can bend it to suit, no floppy hoses. When it's all said and done it's a cleaner install. The only benefit rubber lines have is maybe a little pulsation dampening and they won't absorb heat as well. For me the alumn lines was a clear choice, I had the tools and the parts in my garage for basically free.



With a parellel fuel rail setup you have a bit less pressure drop and maybe a bit better pulsation dampening. One reason I'm guessing why Mazda didn't do it is because the extra materials that would have to be used.



Ouch, that sucks that you don't have either of the stock fuel rails. Good luck finding a set or maybe have a set made.

j9fd3s

yeah an lines will saw thru anything they touch! and they are expensive! and need all kinds of wierd fittings that dont fit in the space you have, i dont mean to get off on a rant here.....

Jeff20B

I'd rather use NPT fittings with barbed ends and rubber hoses, to be perfectly honest.

Dysfnctnl85

I have the fuel railes, I don't have any lines to run from the rails to the lines coming into the engine bay.



So what's the best setup here, aluminum, AN, or rubber hoses?

Jeff20B

I'm not sure which is THE BEST, but I kinda like NPT stuff. It's personal preference since they all do pretty much the same thing. I think AN stuff is more reliable, and a lot more expensive.

setzep

since you have the fuel rails I'd just run a hose from the cars lines to the rails.

Dysfnctnl85

Hoses it is. I don't know when my Mazdatrix parts are coming...I ordered them on Monday (the 7th) and I've only gotten an order confirmation. I don't know if I'm supposed to get shipping info or what...this is a crock!



I should have my SHINY NEW NPR on Monday. I STILL haven't gotten my money back for the bent one...I think I'm just going to bend it back, have it flow tested, and sell it. It should be fine, but mounting it would be a problem...I'm sure I can bend it back.

83turbo

When you removed the front pulley bolt, was there a spring and a copper pellet

thing? If so, you are afflicted with the much loathed "thermal pellet".

It's a warm up related item that often fails and does mean things to engines.

Atkins and others sell an aluminum plug that replaces the pellet. I've heard

you can accomplish the same with a few washers.



As for the fuel lines, I'd probably go with stainless steel line over aluminum (for

abrasion resistance) - but it's harder to work and costs more.

Also you might want to look into Russel Twist-lock or Aeroquip Socketless

hose and fittings. The fittings are AN, but the stuff is cheaper. I made my

oil cooler lines with the hose (#8 hose on the stock fittings - very tight fit).

AN is good but isn't totally immune to failure. I have a couple of them that

have been a real pain. I do prefer something I can easily disassemble though.



As for rubber hose, be sure it's SAE30R9 (high pressure) as opposed to the

SAE30R7 (low pressure) they may try to sell you. The hose should be marked.