mark19 0 Report post Posted October 7, 2010 one of my fuel lines is showing cracks and splits all down it in my facelift e30. I think it is the return fuel line?.. it goes from the fuel pressure regulator to underneath the car, i bought some replacement fuel hose from supercheap $10 per metre. Its 5/16, (couldnt find 8 x 13 mm). Is it fine to use 5/16 instead? however my main question is whether or not the hose is suitable for fuel injection. i asked the sales assistant and they said it should be sweet but i am not so sure.. the hose is marked, h511 automotive fuel hose sae 30 r6 wp12 BAR ID 5/16" 09119 what do you think should i use it or find some other stuff? thanks Quote Share this post Link to post Share on other sites
Jacko 2078 Report post Posted October 7, 2010 Last I looked at fuel injection hose for my E30 it was ~$50 a metre, at trade price, so my money (without looking into the specs) is on it not being up to the pressure, either that or you just got the mad deal! Quote Share this post Link to post Share on other sites
dubman 39 Report post Posted October 7, 2010 ^ what he said. Isnt the fuel hose suppose to look like this Quote Share this post Link to post Share on other sites
Phatputer 3 Report post Posted October 7, 2010 Basically, if you paid $10 per meter, then its not suitable and won't be fuel injector rated When I was replacing the fuel lines on the 325 I was asking all these questions at various different places, Supercheap, Repco, Apco, BNT. They all told me don't use the cheaper stuff, I ended up buying the fuel injector rated hose from Repco for $25 a meter, the lady on the desk felt it was too expensive for just a silly hose and sold it to me at trade. Quote Share this post Link to post Share on other sites
antil33t 90 Report post Posted October 7, 2010 Working Pressure on that is 12bar... 180~psi But I think it's the "SAE30 R6" bit that doesn't make it sutable.. Would be best to get the right kind incase it causes an engine bay fire. Quote Share this post Link to post Share on other sites
Jacko 2078 Report post Posted October 7, 2010 (edited) FWIW, you can probably find PTFE stainless braided hose that has a higher rated pressure for less $ per meter EDIT - You learn something new everyday, its not the pressure, its the permeation and resulting cracking http://www.gates.com/common/downloads/file...echTipsForm.pdf Edited October 7, 2010 by Jacko Quote Share this post Link to post Share on other sites
EdifGee 0 Report post Posted October 7, 2010 I work at supercheap masterton and I bought some fuel hose the other day which is pretty much the same. I got the hose that says Fuel injection blah blah blah on it so that i didnt get the wrong size. Its been fine so far... Quote Share this post Link to post Share on other sites
mark19 0 Report post Posted October 7, 2010 ok thanks for your help, looks like i have to fork out for the sae 30 r9 expensive stuff paying that much per meter i would prefer to have the proper 8 x 13mm hose, however it seems pretty rare is it fine to use 5/16" instead? i will shop around tomorrow and compare prices Quote Share this post Link to post Share on other sites
mark19 0 Report post Posted October 8, 2010 (edited) i got the proper hose, was planning on re-using the same hose clamps. However i notice they look like standard hose clamps, i think they are the oem clamps. I was reading somewhere somebody was saying blame bmw for using the wrong clamps i think i should get some of those smooth rounded fuel injection clamps rather than reusing the same ones. Edited October 8, 2010 by mastermike Quote Share this post Link to post Share on other sites
