jcorenman

You're not special, lots of folks get that treatment!

Do you change the coupler hose? What has changed in the last couple of decades is the fuel, and I think the ethanol (or something else in the mix) eats the molded-rubber coupler.
If I recall correctly, you have some cosmic hose to replace that??

And thanks for being here.

andy-gts

I always thought it was not particularly genius with no in cabin fuel pressure gauge when tuning or trouble shooting. just knowing the pressure is a relief in my mind....more info is better

GregBBRD

Yes, I've got Edwards testing a special hose that is "supposed" to not rip, tear, bend, or buckle. The problem with testing something like this, is that to really test it, you need to leave it in the tank for a year or two....minimum.

Working on fitting some PTFE hose to it....I know that nothing in the new fuel will "touch" that stuff.

I've heard all the stories about the stock hose failing from the new fuel. I've yet to see a "swollen hose", or a hose that seems to be deteriorated from the fuel. All the ones that I've seen broken are cracked and break right behind the clamp on the "tank" insert piece....after many miles and lots of years.....nothing "fresh".

GregBBRD

[quote=James Bailey;9877474]I really appreciate you letting me use your car for fitting the "final version" of the return and feed hoses, on the right side of the engine.

Those "extra long" 16 x 1.5mm male and female threaded pieces on the steel lines have been really problematic for attaching anything to.

I finally got both the male and female adaptors made for those "impossible to deal with" 16 x 1.5mm extra long fittings with -6 and -8 male fittings on the other end. (The adaptors are actually so new that they are still sitting in front of my desk, on the floor, in the "egg crates" they were delivered in!) That will allow me to use some real high quality Teflon AN hose in either -6 or -8, for the "real" hot rod vehicles. This stuff will never leak and is going to be a great product for everyone with an "early" car.

This is going to really "knock your socks off"!

It's uber clean and uber "safe" to finally have these adaptors and thus allow us to get rid of those heat cooked, brittle plastic/rubber hoses.

Fabio421

I've done this testing. In fact my initial test has been ongoing now for 22 months. I've got video documentation at various intervals throughout the process that I will eventually get around to editing and posting here. The bottom line is this. I have seen ZERO deterioration of ANY stock Porsche fuel hose, the gasket that seals the tank outlet or the fuel tank itself when soaking in E85. There was a tiny amount of color leached from the rubber parts but it was very minimal compared to an aftermarket fuel injection hose. The aftermarket fuel injection hose (standard ) leached a ton of pigment into the E85 but with no noticeable differences in it's composition. It is still as pliable as it was when new and it hasn't softened either. It just lost some pigment. I did the testing in order to show whether or not I would need to fabricate a custom stainless fuel tank in order to use E85 in my turbo project. The stock tank has held up fine. There are plenty of viton lined fuel hoses available on the market to replace most of the fuel hoses on our cars but that specially shaped hose that goes from the tank outlet to the pump inlet wouldn't be able to be sourced in this new material so I decided to expand my test to include that stock hose as well as the tank outlet seal. The seal can also be easily replaced by a viton o-ring but I had an extra one lying around so I tested it. Anyway, if you guys are interested, let me know. It may help me to find time to splice these videos together into one.

SeanR

Was your test e85 always fresh? Go through heat cycles and vibrations?

Fabio421

Give me a freakin' break man. Why don't YOU do that test. Seriously, WTF? The E85 was in sealed mason jars so yes it was fresh. The jars were in my non temperature controlled garage in Florida so it did get heat cycled. I think your criteria are a little unrealistic.

SeanR

LOL, bad morning?

Fabio421

No not at all. Maybe I needed to add a smiley?

I went back and added a pic of a chick. Maybe that will help. It certainly can't hurt.

BC

Any synthetic rubber will be fine with even e98. Flouro-compounds do just fine. Teflon is even better.

SeanR

You are right, that helps.

Livio928

O.k. after reading this thread and making notes, then scratching them out as the discussion continued, can someone please indicate what exactly is needed to use an 044 pump? I have an '89 with a stock intake pump and I just purchased an 044 pump from Roger.

Without realizing that there were all of the changes and fitments required (stupid me, I thought it was just a relatively easy plug and play install) I found out that i needed a nipple on the tank end of the external pump and after reading this thread, it looks like i need new hoses and new wiring.

So is it recommended that i change the intank pump as well, the hoses and also the wiring? Is this kit available from Greg or one of the other vendors? Roger directed me to search on this site for solutions to this problem. I purchased Greg's fuel hose set, and if I recall, i also have a fuel hose for the fuel pump but I don't have it handy to verify. I will be s/c the engine and i have purchased a SuperMAF. Since i am doing all of this work, i don't want the pump to leave me stranded.

Can someone please list exactly what is needed for this to work?

Thanks in advance.