fuel hose

[kramdra]

What should I be using. Ive tried SAE30 R9, which is supposed to be for injected bikes but too thick and not flexible. Ive replaced 3 times as it has rotted and split (with fresh fuel, did not go stale)

Rubber hose seems never 100% fuel resistant, where as pvc or similar will harden as the plastisisers get washed out.

This is for the 9mm ID fuel tap to carb on the cbr250rr.

[BTTD]

Hmm, I've not had problems with R9 rotting or splitting. Are you buying decent branded stuff like Goodyear, or ebay cheap stuff?
I bought some injection fuel line off ebay cheap, and I got crappy R6 fuel line.
Still got it in the garage, but I'm not sure if I'll ever use it. I think I then bought R9 from Demon Tweeks, proper Goodyear stuff.

[Pigeon]

You could try the stuff thats Ethanol rated (E85, or E100)

But that tends to be marginally even thicker OD.

[Nobby the Bastard]

I always thought that you were supposed to use silicone hose for fuel. I normally just buy it (as fuel pipe) from the nearest motor factor.

Tbh, I've never had an issue asside from hose thats 20 years old...
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trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050

[kramdra]

This is what I had fitted www.ebay.co.uk/itm/161108103645
It is too thick, wont bend for the available space, I dont trust it to stay on the carb connector. Im also using a quick disconnect fitting in the middle.

This is the OE part, www.ebay.co.uk/itm/231593856609

[BTTD]

[Tankie]

https://www.ebay.co.uk/itm/Nitrile-Rubber-Smooth-Fuel-Tube-Petrol-Diesel-Oil-Line-Hose-Pipe-Tubing-NBR-AFS-/271076139316?var=&hash=item0

Have a look at this , this is what I use
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Always learning, everyday is a school day

[smallfrowne]

Tankie, is that decent stuff then, no cracking/going hard after a year?

Searching for decent stuff on ebay can be a right game.

Everything I've bought so far has gone "dry" and cracked up like a bastard, or at least gone rock hard in no time. I'll probably be trying the low pressure hose from demon tweeks next, branded "LMA" which is apparently a british motorsport company, but no idea if they actually make the hose. I'm willing to give it a go, just for a change, thanks for the idea jnw010.

[Tankie]

This is the proper proofed hose solution, it will last years.
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Always learning, everyday is a school day

[smallfrowne]

Cheers, that's music to my eyes - I'll try that instead then, a hose solution, in sizes for everybody.

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'90 VFR750; '89 NC30; '95 DR650; '89 CD250U; ~'82 CG125; ~C90

[Snod Blatter]