On the fuel pump replacement done with the rectangular hole (92 RS 305 TBI) the Q is: do I have to cut the four metal lines to proceed? or I can "play/twist around" with it to avoid cutting lines or else? never did an in tank fuel pump. Thanks

gotta cut the lines. use a rubber fuel line from your auto parts store and some good hose clamps to connect them again though after you change pump. good luck!

That would be ok to do if your running a carb but if your running fuel injection it would be a better ideal to use something like a compression fitting. a carb fuel pressure is around 6-8 psi a TBI at 12 psi and TPI is in the 19-20's

you can use the rubber fuel line, just make sure it's rated for at least 60PSI just to be safe.

im pretty sure the tpi fuel injection is around 40 psi. i used compression fittings on mine when i replaced the fuel pump. but who ever did it before me on my car used high pressure rubber fuel line and worm clamps and it never leaked as far as i could tell.

the ends of the rubber lines will start to break down over time and they could leak.use compression fittings save your self some possible headaches in the future

From my Streettrucks magazine Oct. 2004, that I just happen to have handy for a great article on TPI swaps...

"Tuned Port fuel pressure regulator used 30 pounds at idle on 1985 models. 1986 and later models used a 38-pound regulator."

So if that's "at idle" and the fuel pressure is being held at the manifold, where does that put you?

Mathius

sorry i was thinking injectors

OK " abandoned" car is now running again I need some help with this kind of noise coming from inside the tank is like a distant blender/vacuum cleaner with a bad bearing..you know that kind of noise that is not even..could be the return lines making this noise by dumping fuel back to the tank? or fuel pumps make this kind of noise?..ZERO experience with electric FP

I had a problem with my car where the previous owner had swapped the fuel lines accidentially between the fuel tank return line (returns "underwater" in the fuel) and the Evap Canister line (pulls vapors from the top of the tank). This caused a weird nose because the return fuel was doing a mini waterfall into the gas tank, and the car ran like crap every time it warmed up and opened the valve to evacuate the Evap canister, which was now full of raw gas instead of a bit of vapors.

TA

quite a mistake..glad you found the problem, I think in my case the noise was the fact that the "door" was still open and the carpet not in place..engine runs fine.

I don't see it as a hack of any kind.

It is fixing a factory design flaw our cars should have come with.

Agree, just copied n pasted from another thread where some brothers were defending the "crawl under way" of doing it..probably with visions of future in the collectible market which I don't see other that Keeping parts available for the next generation of sick puppies like my daughter..she is in college and don't want me to get rid of the camaro who is been rusting for a year or so (reason why fuel pump went), I gave it to her after getting tired of going places for 16 years non stop, GM!

I'll probably get flamed for this, but a hack job is just doing a crappy job of making an access panel. If you do a nice quality job, it is not hacked, it is not weak and it is not dangerous.

TA

There is few ways to tackle this , the big one for me was from above or from underneath? other could be who is going to do it/ multiple choices here.
then how fast? how well/neat?; is the car worth it?..way of doing it are endless..very personal not worth the judgment.
Thanks to the braves who did it from above n especially to the ones who posted the pictures for me to learn.

Very true, there is a VERY long sliding scale from "Total Hack" to "Vehicle Enhancement". Unfortunately, the 2 cars I've seen it done on before I owned them... total hack. That is why it is generally discouraged.

any pics? i had to o this saturday. it took for friggin ever

What kind and size of compression fitting did you use?

I did the access panel yesterday and i'm not very crazy about my rubber fuel lines, they look weak.