garyf Posted April 8, 2016 Share Posted April 8, 2016 I will be replacing some High Pressure fuel hoses on my TR this weekend and have decided while I'm at it to replace all the low pressure ones so I know that they are all new?I've purchased some SAE30 R6 Hose from a local motor factor, I wanted R9 rated but they didn't have any in the correct 1/4" internal diameter, will this Hose be Ok with Modern Ethanol filled fuels? Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted April 8, 2016 Share Posted April 8, 2016 As you say, the R9 is the correct stuff but I've had good results with R6 in the recent past, even when it's been re-homed from scrapped cars.The only place I've been able to buy R9 hose is online and I'm finding that the outer layer starts to crack after little more than a year though it doesn't leak or smell. Whether a hose smells of fuel even though there is no visible leak is a quite a good guide as to how well it is coping.Nick Quote Link to comment Share on other sites More sharing options...
garyf Posted April 8, 2016 Author Share Posted April 8, 2016 NickIt sounds like I will be Ok with the R6 then, thanks for the feedback. Quote Link to comment Share on other sites More sharing options...
heraldcoupe Posted April 9, 2016 Share Posted April 9, 2016 I've found R6 degrading and cracking within six months. It may be an issue of manufacturing quality rather than the R6 specification, but I've had no similar problems when using R9.My hoses came from two different sources so I won't pretend it's a direct comparison, either way I am left with a large quantity of R6 which I won't risk using.Cheers,Bill. Quote Link to comment Share on other sites More sharing options...
ferny Posted April 10, 2016 Share Posted April 10, 2016 My R6 split within a year and was pissing fuel everywhere.Some R9 I had split and was close to buggered in the same time frame.The R9 I got from Clive who got it from Bill cracked within two months. I replaced it and cut the old open to check inside. Internally it was perfect. Quote Link to comment Share on other sites More sharing options...
Clive Posted April 10, 2016 Share Posted April 10, 2016 Quoted from ferny The R9 I got from Clive who got it from Bill cracked within two months. I replaced it and cut the old open to check inside. Internally it was perfect. What on earth did you do with it? seems to be fine on my car, that is over a year and no problems that I can see. Just hope it wasn't fake gates greenshield stuff... seems to be some iffy stuff about.(and to be clear, the Bill referred to was not Rarebits Bill! The hose I got came direct from the USA) Quote Link to comment Share on other sites More sharing options...
yorkshire_spam Posted April 10, 2016 Share Posted April 10, 2016 I'll be swapping my rubber fuel hoses for Gates 27313 1/4" 50 PSI Barricade - I bought a reel from the US - hope it's genuine and it lasts at that price! Quote Link to comment Share on other sites More sharing options...
garyf Posted April 11, 2016 Author Share Posted April 11, 2016 Looks like I may have a problem with the R6 Grade Hose I've fitted it now so to late! Quote Link to comment Share on other sites More sharing options...
ferny Posted April 11, 2016 Share Posted April 11, 2016 Quoted from cliftyhanger What on earth did you do with it? seems to be fine on my car, that is over a year and no problems that I can see. Just hope it wasn't fake gates greenshield stuff... seems to be some iffy stuff about.(and to be clear, the Bill referred to was not Rarebits Bill! The hose I got came direct from the USA) It's behind the rear wheel under the car, so maybe its environment makes a difference. Either way, it's still fine inside, just looks scabby on the outside. I also found petrol dissolves the outer layer, leaving a black stain on your hands which lasts a few days. Quote Link to comment Share on other sites More sharing options...
DGGT6 Posted April 27, 2016 Share Posted April 27, 2016 I too have had cracking with R6 fuel hose. I usually run E10 unleaded.Found this link (and others) for specs of fuel hoses and I am going to change/stick to R9 for the high and low pressure lines. (Megasquirt PI)http://www.volksbolts.com/faq/fuelhose.htmKeep an eye on your R6 lines to be on the safe side.Cheers,Doug Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted April 29, 2016 Share Posted April 29, 2016 R6 and R9 hoses both seem to made up of a number of layers. And the outer layers don't seem to be made of very long lasting rubber on the R9 I've been buying. Light surface cracking has appeared after less than a year. No leaks or even odour so the inner layers are holding.Certainly worth keeping a close eye though.Nick Quote Link to comment Share on other sites More sharing options...
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