Fuel line Question, Replace hard line in tunnel with soft??? Options

[kfish914]

I know I may get a lashing for asking this but with a budget in mind. Would there be any issues with replacing the hard plastic lines with rubber lines? I know I could use electrician's fish tape to pull it through into place. My worries are the grommet area (where the hose would pass through the body panels) rubbing or kinking the fuel line. I am exchanging the current 1.8 four, for a 2.7 six.
Any thoughts?

[PRS914-6]

I used high quality German fuel injection line the entire length. I installed heat shrink over the inside portion for abrasion protection and insulation over the outside portions for heat protection. All penetrations have rubber grommets. The advantage is the reduction in joints. Not legal for some racing.

[realred914]

I used high quality German fuel injection line the entire length. I installed heat shrink over the inside portion for abrasion protection and insulation over the outside portions for heat protection. All penetrations have rubber grommets. The advantage is the reduction in joints. Not legal for some racing.

that hose is probably not rated SAE 30R9 which means it is not lined and is not resistant to the new formula oxgenated fuels. if you use oxegenated fuel, that hose will degrade internally. the 30R9 hose has a teflon like inner liner to resist the new fuels, it is now the standard FI rated hose required in california tests.


for teh tunnel lines, on a budget, i'd replace with plastic hard lines they make them fuel proof, and there are cheap.

remeber todays gasoline is not like yesterdays gas. the new stuff is corrosive to metals unlike before,a dn will eat up many of the common rubber parts used in teh past, be it hoses, pump diaphrams, and carborater seals.

the use of SAE30R9 is highly recommended so you dont have fuel hose failure do to breakdown cause of the new fuels.