M2 High pressure fuel line

[uxoman]

I have an early '70 car that does not have a steel fuel return line that needs to be converted to the high pressure line for the fuel injection system. Can I run rubber high pressure hose designed for fuel injection systems instead? It would be easier to run than a stainless steel line, but can it handle it? I can't see why not, plus I think it would be cheaper.

[pichos1]

Not sure on the rubber hose for the entire lenght of the car. I had the same problem with my 69 M2. I took the steel line out of a later year 2002 for the high pressure and kept the stock plastic one for the return. Do you have acces to a wrecking yard where they have 2002's?

Regrds

Jan

[NickVyse]

I used pretty cheap copper and ran it along the sill.

[BLUNT]

im going to run a stainless line similar to nicks but probably on the oposite side. i wouldnt run rubber all the way.

[us4736]

i don't see why it would,nt work ,i've used it on other projects with elec fuel pumps (high presure) and never had a problem with it .i'am just starting a M2 now just got the motor and trany friday .is their and m2 s14 forum anywhere? need a few ?s anwered

[BLUNT]

i don't see why it would,nt work ,i've used it on other projects with elec fuel pumps (high presure) and never had a problem with it .i'am just starting a M2 now just got the motor and trany friday .is their and m2 s14 forum anywhere? need a few ?s anwered

ask em here. theres a ton of guys with complete cars and as many mid- project

[Lee]

Hi Phil.

I would be carefull dealing with high pressure pumps and fuel. You are an expert in explosive, and a 2002 doesn't qualify as such a device. Some people have indeed used the steel line for the send, and the blue plastic one as a return. Does it work? Sure. Is it safe. Hmmm.. I don't trust this blue plastic line. You have achieved most of the work already and the fuel lining is not an easy one. If I were you, I would use Aeroquip stainless braided lines with Teflon internal lining. Being Teflon, the lining will last for ever (unlike rubber) and having a braiding, it is undestructible. Just do the extra mile and be safe.

Two lines could run by the transmision tunnel, inside the cockpit. Use bulkhead fittings to go thru the front and rear bulkheads. 30 years from now, those lines will still be like new. And for now, it is extra safety. Cost will be around $120 for fittings and perhaps $60 for lines. This is a $200 insurance for a $20k car.

[jimk]

Go down to Bill Morton's Motorsports Supply on 7200 E. 54th Place, Commerce City and buy a coil of steel or aluminum tube and any end fittings you can imagine and bend to fit the route of the later cars. I did both the supply and return outside of the car.

Tube is in 25ft lengths. They are open Sats too 9-12. Light customer traffic on Sats.

[_z_]

I went with summit racing aluminum fuel line for a tii conversion i'm working on. Dono if that was a smart choice but its fairly easy to use and is rated for HP fuel. Not too expensive either, but not nearly as sexy as stainless

[JohnN]

fuel line that would do the job very nicely. It is almost impossible to cut with a sharp utility knife and could be easily routed underneath your car in the tunnel.

I used a aluminum fuel line when I did mine, but if I have to do the job again will go with the cool kevlar stuff.

Regards,

John N