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Rubber fuel line replacement.
Posted: Tue Feb 16, 2016 4:00 pm
by Richard the old one
Recently Tony g pointed out that the correct fuel hose type that resists ethanol is SAE30R9 and not R6. I decided to see if I could purchase some and contacted the Bristol branch of MOSS-EUROPE.CO.UK the gentleman on the other end of the telephone very kindly went off to look at their 1/4 inch stock and advised me that it was marked SAE30R14T1.
This set me off surfing the net and I found the following site
www.volksbolts.com which contained a very good CODAN guide to Fuel hose and fuel hose clip selection. Basically R14 is a low pressure version (50psi) of the high pressure R9 (100psi) hose. The result is it is a lot cheaper, Moss sell it at £6/m. I did fail to ask if they stocked 5/16 internal diameter which is needed under the car to connect the various metal pipe lengths.
Re: Rubber fuel line replacement.
Posted: Tue Feb 16, 2016 8:58 pm
by Carledo
An enlightening piece of research and a cost effective result - at least for you! I used R9 which is correct in any case for my EFi system.
I would imagine a company like Moss will keep the hose in metric bores nowadays, so you will want 8mm bore hose, effectively the same as 5/16". And will match perfectly with your 8mm central heating pipe!
I expect they will also sell 6mm (1/4") and 10mm (3/8") These are not quite such a good match to the original imperial, but close enough to use without problems.
Steve
Re: Rubber fuel line replacement.
Posted: Tue Feb 16, 2016 10:31 pm
by tony g
Good find Richard
I use R9 as a matter of course now as most things are injected now. You dont actually need much rubber hose on a dolly so it never bothered me
Tony
Re: Rubber fuel line replacement.
Posted: Wed Feb 17, 2016 9:14 am
by trackerjack
However be careful where you buy it as there are some very nice gentlemen probably with slanty eyes who are producing fake R9 hose which jellifies when used with modern fuel.
Ebay is where you can find the fake stuff, so be warned and cut a slice off and drop it in a little pot of fuel and if it jellies overnight you have your answer.
I had some fake stuff about 10 years ago and it was marked as Gates but clearly was not.
Re: Rubber fuel line replacement.
Posted: Wed Feb 17, 2016 4:17 pm
by Mahesh
Nice simple test, I like it.
Re: Rubber fuel line replacement.
Posted: Thu Feb 18, 2016 12:18 am
by cleverusername
I just used the unleaded fuel hoses they sell at my local autofactors. Its cheaper, and since it is designed for modern cars, it will work with modern fuel.
Re: Rubber fuel line replacement.
Posted: Mon Feb 22, 2016 3:35 pm
by trackerjack
Often Autofactors buy in stuff that though it has the markings on it might not be the real deal.
Trust no one.
Re: Rubber fuel line replacement.
Posted: Mon Feb 22, 2016 4:20 pm
by cliftyhanger
cleverusername wrote:I just used the unleaded fuel hoses they sell at my local autofactors. Its cheaper, and since it is designed for modern cars, it will work with modern fuel.
Ummm..... not necessarily
I have had a factor tell me the R6 hose they sell is fine with modern fuels. however, it just isn't! R9 and some others are the ones you need as they are ethanol resistant. R6 isn't, and really shouldn't be sold at all.
Re: Rubber fuel line replacement.
Posted: Tue Feb 23, 2016 10:01 am
by trackerjack
cliftyhanger wrote:cleverusername wrote:I just used the unleaded fuel hoses they sell at my local autofactors. Its cheaper, and since it is designed for modern cars, it will work with modern fuel.
Ummm..... not necessarily
I have had a factor tell me the R6 hose they sell is fine with modern fuels. however, it just isn't! R9 and some others are the ones you need as they are ethanol resistant. R6 isn't, and really shouldn't be sold at all.
As I said
The stuff that was the worst was clear with criss cross string going through it and was popular with motorcyclists. However I have not seen it for about 10 years now.