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 Fuel and Oil Resistant Rubber Hose
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ianh
V4 Fanatic

United Kingdom
239 Posts

Posted - 01 Jul 2019 :  18:25:59 Show Profile Reply with Quote
Hi all, I have recently taken my 96 out of storage, I did give it a run now and again so wasn't surprised when it ran out of fuel on the way home. Now full of fuel tucked up in its new garage, I was alerted by the smell and found a puddle of Tescos finest on the floor.
The Fuel and Oil Resistant Rubber Hose had perished next to the mechanical fuel pump and fuel was leaking everywhere. With mole grips on the hose I managed to inspect what I thought was a good part of the hose but it was cracking everywhere so will need replacing.
If you have your engine out for the sake of a few replace the hose unless you know its a good one.
Ian

Woody
V4 Guru

United Kingdom
2436 Posts

Posted - 01 Jul 2019 :  19:54:50 Show Profile Reply with Quote
I got some recently from Halfords -HDuty 8mm (5/16") which I needed for the twin Webers. Standard fuel pumps need 6mm. It is also worthwhile checking the rubber hose at the tank end as that perishes too.
Most motorist shops carry fuel pipe.
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ianh
V4 Fanatic

United Kingdom
239 Posts

Posted - 01 Jul 2019 :  20:36:58 Show Profile Reply with Quote
Thanks woody, I had forgotten the tank end! I have ordered quite a bit so I can change all of it.. Out of sight and all that.
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melle
V4 Guru

United Kingdom
2770 Posts

Posted - 01 Jul 2019 :  21:21:34 Show Profile Visit melle's Homepage Reply with Quote
quote:
Originally posted by Woody
Standard fuel pumps need 6mm.
... or 8mm. The barbs on the pump match the one on the carb; FoMoCos came in 6 and 8mm flavour, 2bbl Solexes are always 8mm as far as I know.

6mm and 8mm FoMoCo carbs from Saab engines:


www.saabv4.com
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greg124
V4 Fan

United Kingdom
163 Posts

Posted - 01 Jul 2019 :  21:48:09 Show Profile Reply with Quote
I replaced all the fuse hoses on the Alvis when I re-commissioned it about 12 years ago, and had to replace them again after 2 years as one had started to leak. The second time around I went for a thicker wall and stamped as suitable for unleaded. The first lot had been quite a thin wall with cotton braiding - it looked very much like the original, but was a fire risk
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Dirtbiker
V4 Mad

United Kingdom
694 Posts

Posted - 01 Jul 2019 :  23:35:13 Show Profile Visit Dirtbiker's Homepage Reply with Quote
I was advised to use this: ISO7840 A1 MARINE Grade Rubber Fuel Hose
I have some to fit to the 96 as it is still on its original factory hose behind the back seat...
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ianh
V4 Fanatic

United Kingdom
239 Posts

Posted - 09 Jul 2019 :  14:42:18 Show Profile Reply with Quote
Thanks for the advise, I changed the original factory hose behind the back seat, the hose that came with the new Weber fitted ok. I used heavy duty fuel / oil hose for the rest with 8mm bore.
Biggest problem was the screw for the clip under the drive shaft!!
Just the filler hose to replace when it arrives and then I can start to enjoy my car again.
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V4saab1966
V4 Fan

United Kingdom
114 Posts

Posted - 11 Jul 2019 :  19:11:33 Show Profile Reply with Quote
Ive changed all mine for braided hose seems to be doing the job ok, you get little end caps for the end of the cut pipe looks nice and finished off.
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Derek
V4 Guru

United Kingdom
1863 Posts

Posted - 12 Jul 2019 :  11:16:46 Show Profile Reply with Quote
The braided hose can look pretty fancy but the important thing is that the rubber hose itself is compatible with ethanol etc. If it does have any markings to show that it meets current standards you will have to slip off the braiding to find out. Sadly I think many will be found lacking.
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V4saab1966
V4 Fan

United Kingdom
114 Posts

Posted - 13 Jul 2019 :  20:01:09 Show Profile Reply with Quote
Mine conforms as its the same hose I had on my cosworth which I assure you its a lot more fuel pressure than a Saab v4 you pay for what you get buy cheap it dont last buy expensive the quality speaks for itself every time :) :)
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