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Jan 10, 2007 17:09:42 GMT
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Just after a bit of advice on this one...
I've started replacing the solid fuel lines in my Mercedes 200 as the originals are starting to rust through. I'm using copper pipe as it's easier to work with, but of course the ends won't be flared like the originals are. It's a carb model so no huge fuel pressures. Do you think I'll have a problem? I'm thinking not, but it's best to make sure as I'd rather not have my armpits stinking of petrol for a second time ;D
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street
Posted a lot
6.2 ft/lbs of talk
Posts: 4,662
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Jan 10, 2007 17:14:15 GMT
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I didn't flare mine and i've only had my fuel pipe come off once, and that was because I didn't push the flexi on far enough Touch wood its been fine since I put it on properly (the morning of last years CaRS show!) but would be interested to know weather it should really be flared or not too.
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Jan 10, 2007 17:15:20 GMT
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:)What bore size is the copper pipe you're using? I doubt it would be a problem on a carb'd car anyway, but I might be tempted to use 2 hose clamps on each end.
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Seth
South East
MorrisOxford TriumphMirald HillmanMinx BorgwardIsabellaCombi
Posts: 15,537
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Jan 10, 2007 17:15:59 GMT
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I've successfully used plain ended tubing for fuel line on numerous occasions (never had an injected car!) I would have though you'd be fine if its on a carb set up and only running a few psi. Might be worth checking out what the pump should be delivering first though to be on the safe side.
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Follow your dreams or you might as well be a vegetable.
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Jan 10, 2007 17:20:20 GMT
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dean works on benz shocker!!!! ;D
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Jan 10, 2007 17:22:21 GMT
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It's about 6mm bore from the looks of it. I'll check what the stock fuel pressure should be. On the original lines the flared end is stuck a good 30mm down the flexi pipe, so the jube clip doesn't use the flared end to stay in place by the looks of it...
Street - didn't the MOT tester ramp up the fuel pressure causing the pipe to blow off on your car?!
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Jan 10, 2007 17:22:54 GMT
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dean works on benz shocker!!!! ;D Get ter fook! ;D ;D ;D ;D
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Jan 10, 2007 17:46:28 GMT
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I've used unflared fuel lines before with no problems. Just push the pipe on a long way and use two clips. Some brake pipe flare kits have the tool for flaring bigger stuff if you have access to one.
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1962 Datsun Bluebird Estate - 1971 Datsun 510 SSS - 1976 Datsun 710 SSS - 1981 Dodge van - 1985 Nissan Cherry Europe GTi - 1988 Nissan Prairie - 1990 Hyundai Pony Pickup - 1992 Mazda MX5
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Jan 10, 2007 17:54:31 GMT
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:)If the flare is 30mm down the pipe it sounds like it'll be to stop the pipe going on further rather than to prevent it coming off. [Though gawd knows why? ] I don't think you need to worry anyway TBH.
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Last Edit: Jan 10, 2007 17:55:06 GMT by daverapid
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Jan 10, 2007 17:58:40 GMT
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Marvellous, I'll stock up on jube clips and start putting in the new piping ready for the dreaded MOT... I couldn't find any specs for the fuel pump pressure (I don't have a manual) but it won't be more than a few psi. Thanks fellas!
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Jan 10, 2007 18:01:35 GMT
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I wouldn't worry about the pressure. Do it right and it'll be fine. I've used unflared pipe several times with high pressure EFI systems without ever having had it come off or leak. You'll be fine with a carb system.
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1962 Datsun Bluebird Estate - 1971 Datsun 510 SSS - 1976 Datsun 710 SSS - 1981 Dodge van - 1985 Nissan Cherry Europe GTi - 1988 Nissan Prairie - 1990 Hyundai Pony Pickup - 1992 Mazda MX5
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street
Posted a lot
6.2 ft/lbs of talk
Posts: 4,662
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Jan 10, 2007 18:05:16 GMT
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Street - didn't the MOT tester ramp up the fuel pressure causing the pipe to blow off on your car?! I suspect he did, lord knows why! I gave it to him the night before to stick a CV boot on, when I collected it the footwell was holding the entire contents of the fuel tank, an I found that the fuel pipe had blown off and the fuel pressure regulator was cranked up to the max. He'd also managed to put his thumb through the foam air filter I had to drive it to CaRS with it completely stinking of fuel inside.... by the time I got there i'd breathed in so much fuel vapour I didn't even know what year it was
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Jan 10, 2007 18:42:07 GMT
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I ran unflared copper pipe (8mm central heating ) on my efi engined prefect, they never came off. what I had thought about doing was, instead of flaring the end, soldering brass olives (compresion sleeves) on the ends of the pipes. another thing to think about is to use narrow jubilee clips rather than the fat size ones hellfrauds sell; clamps the pipe better.
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Jan 10, 2007 18:45:18 GMT
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I always try to use OEM fuel line clips if possible as I find most of the motor accesory shop Jubilee clips are useless. The original Nissan ones are stainless steel so they look nice as well. Cheaper from a scrappy too!
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1962 Datsun Bluebird Estate - 1971 Datsun 510 SSS - 1976 Datsun 710 SSS - 1981 Dodge van - 1985 Nissan Cherry Europe GTi - 1988 Nissan Prairie - 1990 Hyundai Pony Pickup - 1992 Mazda MX5
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Jan 10, 2007 18:58:50 GMT
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I always try to use OEM fuel line clips if possible as I find most of the motor accesory shop Jubilee clips are useless. The original Nissan ones are stainless steel so they look nice as well. Cheaper from a scrappy too! I just pilfer the bmw ones at work ;D they always grip nicely. the jcs ones are pretty good too. bmw have been introducing "use once" clips for some time now, I shall continue gathering until supply of the older style ones run out. ratdat- is it all nissans that have s/s jubbly clips? might have to visit the general scrappy sometime
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Jan 10, 2007 19:25:04 GMT
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ratdat- is it all nissans that have s/s jubbly clips? might have to visit the general scrappy sometime Yes but only on fuel lines and intercooler pipework. The coolant hose clips are those wire ones.
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1962 Datsun Bluebird Estate - 1971 Datsun 510 SSS - 1976 Datsun 710 SSS - 1981 Dodge van - 1985 Nissan Cherry Europe GTi - 1988 Nissan Prairie - 1990 Hyundai Pony Pickup - 1992 Mazda MX5
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Jan 10, 2007 19:27:36 GMT
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cheers!
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bstardchild
Club Retro Rides Member
Posts: 14,936
Club RR Member Number: 71
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Jan 10, 2007 19:43:21 GMT
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I found that the fuel pipe had blown off and the fuel pressure regulator was cranked up to the max. He'd also managed to put his thumb through the foam air filter I had to drive it to CaRS with it completely stinking of fuel inside.... by the time I got there i'd breathed in so much fuel vapour I didn't even know what year it was Took me a week to get rid of the smell in me tent!!!
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Jan 10, 2007 19:57:22 GMT
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I wouldn't cost much to have them done by a local motor factor with the equipment, I had a new brake line made for under a tenner.
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slater
Club Retro Rides Member
Posts: 6,390
Club RR Member Number: 78
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Jan 10, 2007 20:13:08 GMT
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If you want some Edd i have a good supply
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