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Home > Technical Chat > Internal fuel lines | |||||||
1425 Posts Member #: 9199 Post Whore Lancashire |
13th Apr, 2014 at 11:56:58am
After messing up way to much copper trying to copy my old lines decided to put the lines inside the mini.
What the mind can conceive the mini can achieve
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9502 Posts Member #: 1023 Post Whore Doncaster, South Yorkshire |
13th Apr, 2014 at 02:15:18pm
I got my last lot from ebay almost 1/3 price of halfords
Yes i moved to the darkside
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3588 Posts Member #: 655 Post Whore Northern Ireland |
13th Apr, 2014 at 03:26:49pm
I assume by internal you mean inside the cabin.
9.85 @ 145mph
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1425 Posts Member #: 9199 Post Whore Lancashire |
13th Apr, 2014 at 03:34:29pm
Already stinks of fuel but dont want it any worse.
On 13th Apr, 2014 stevieturbo said:
I assume by internal you mean inside the cabin. If so, then you really need to use teflon hose otherwise the car will stink like fuck of petrol. What the mind can conceive the mini can achieve
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105 Posts Member #: 9378 Advanced Member Chobham |
13th Apr, 2014 at 04:25:59pm
I've used aluminium hardline from goodridge, but if you didn't get on with copper I wouldn't use the alu. Otherwise I get all my braided hose from torques uk on ebay |
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1425 Posts Member #: 9199 Post Whore Lancashire |
13th Apr, 2014 at 08:36:02pm
On 13th Apr, 2014 benjy_18 said:
I've used aluminium hardline from goodridge, but if you didn't get on with copper I wouldn't use the alu. Otherwise I get all my braided hose from torques uk on ebay What the mind can conceive the mini can achieve
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11046 Posts Member #: 965 Post Whore Preston On The Brook |
13th Apr, 2014 at 08:46:20pm
Not sure 10mm return is required. 8mm return will be more than adequate. Remamber that tube is measured in OD and hose measured in ID, therefore 8mm hose has a larger bore than 8mm tube. On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be... So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'... On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........ |
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1425 Posts Member #: 9199 Post Whore Lancashire |
13th Apr, 2014 at 08:56:40pm
On 13th Apr, 2014 Sprocket said:
Not sure 10mm return is required. 8mm return will be more than adequate. Remamber that tube is measured in OD and hose measured in ID, therefore 8mm hose has a larger bore than 8mm tube. What the mind can conceive the mini can achieve
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11046 Posts Member #: 965 Post Whore Preston On The Brook |
13th Apr, 2014 at 09:22:55pm
8mm OD tube flow and return would be more than adequate, ergo 8mm hose flow and return will be much more than adequate.
On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be... So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'... On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........ |
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7265 Posts Member #: 1268 The Boom Boom speaker Police! Essex |
13th Apr, 2014 at 10:23:57pm
I'm about to swap to Teflon hose in mine. It's had normal injection hose for the last 3 years and it stinks in the car. In the 13's at last!.. Just |
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3588 Posts Member #: 655 Post Whore Northern Ireland |
13th Apr, 2014 at 10:33:42pm
On 13th Apr, 2014 lee.pb said:
Been looking at AN-6 Teflon Braided Steel Hose, which has an ID of 8mm. Would that be acceptable for flow and return ? Need 2 x 4 meters. http://www.ebay.co.uk/itm/AN-6-6AN-JIC-6-M...=item53ffa7bf80 On 13th Apr, 2014 Sprocket said: Not sure 10mm return is required. 8mm return will be more than adequate. Remamber that tube is measured in OD and hose measured in ID, therefore 8mm hose has a larger bore than 8mm tube. -6 teflon would be fine for both.. Actual fittings will reduce bore size slightly, but not a lot. No different than using 8mm hardline tubing which would also be measured in OD, so smaller ID. 9.85 @ 145mph
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11046 Posts Member #: 965 Post Whore Preston On The Brook |
13th Apr, 2014 at 11:35:45pm
It is not necessarily the size of the bore that is the problem, it is the length of the run. On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be... So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'... On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........ |
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1425 Posts Member #: 9199 Post Whore Lancashire |
14th Apr, 2014 at 06:40:39am
On 13th Apr, 2014 Sprocket said:
It is not necessarily the size of the bore that is the problem, it is the length of the run. What the mind can conceive the mini can achieve
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9502 Posts Member #: 1023 Post Whore Doncaster, South Yorkshire |
14th Apr, 2014 at 08:14:47am
Is there a general rule hp - fuel line size? Yes i moved to the darkside
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1745 Posts Member #: 375 Post Whore Leicestershire |
14th Apr, 2014 at 06:13:57pm
I got rid of the smell of fuel in my car by using Teflon lines. I got it from the local hydraulic place and then got the fittings from torques uk. |
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3588 Posts Member #: 655 Post Whore Northern Ireland |
14th Apr, 2014 at 07:19:09pm
On 14th Apr, 2014 Brett said:
Is there a general rule hp - fuel line size? Not sure. But it's a struggle to get a needle valve larger than 1/8" on an SU, in fact even 1/8" is difficult, that's 3.175mm diameter Even 8mm OD hardline will be about 6mm ID. That equates to almost 4x the CSA of the needle valve. Yes bends, length of hose etc restricts a little. But as pressure is maintained and local to the carb, dont see most restriction as a big deal. I used 8mm OD nylon tube for feed/return with the usual Malpassi regulator about 17 years ago when I had a 3.9 twin turbo Rover V8 blowing through a Holley. Had maybe 400hp or so at the time, maybe a little more. It seemed to cope fine. And when using teflon/braided type hose, you shouldnt really mix/match different brands parts. There can be small differences in specifications which may lead to problems. 9.85 @ 145mph
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16540 Posts Member #: 4241 King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner Rotherham, South Yorkshire |
14th Apr, 2014 at 07:27:27pm
Brett's running a Datsun engine though On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it |
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9502 Posts Member #: 1023 Post Whore Doncaster, South Yorkshire |
14th Apr, 2014 at 08:32:47pm
On 14th Apr, 2014 stevieturbo said:
On 14th Apr, 2014 Brett said:
Is there a general rule hp - fuel line size? Not sure. But it's a struggle to get a needle valve larger than 1/8" on an SU, in fact even 1/8" is difficult, that's 3.175mm diameter i never really thought about the carbs restrictions i guess thats when you would run into the problem of sucking the float bowl dry when booting it for too long On 14th Apr, 2014 apbellamy said:
Brett's running a Datsun engine though yeah i was asking in general because im sure the skyline has 8mm hard lines and people run 6-700hp on these with just an after market pump and bigger injectors on my mini i calculate to need shift something like 4l per min which doesnt sound like a great deal at all Yes i moved to the darkside
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293 Posts Member #: 10010 Senior Member Northants |
14th Apr, 2014 at 09:03:06pm
I think its not an issue if the pump is man enough to cope.
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11046 Posts Member #: 965 Post Whore Preston On The Brook |
14th Apr, 2014 at 09:32:45pm
It matters on the return line since if there is any resistance, the pressure drop can excede the set pressure of the regulator.
On 26th Oct, 2004 TurboDave16v said:
Is it A-Series only? I think it should be... So when some joey comes on here about how his 16v turbo vauxhall is great compared to ours, he can be given the 'bird'... On 26th Oct, 2004 Tom Fenton said:
Yep I agree with TD........ |
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3588 Posts Member #: 655 Post Whore Northern Ireland |
14th Apr, 2014 at 09:46:47pm
On 14th Apr, 2014 Brett said:
yeah i was asking in general because im sure the skyline has 8mm hard lines and people run 6-700hp on these with just an after market pump and bigger injectors on my mini i calculate to need shift something like 4l per min which doesnt sound like a great deal at all Variables. Subaru OEM 8mm OD hardline will support around 500, 550 at a push. It does have lots of 90deg bends in it though as it travels up the car. But you cant really compare a 5psi carb flow with 50, 60, 70, 80psi EFI flow. Obviously the EFI will flow more for the same pipe diameter. So it probably is possible for a "straight" or almost straight 8mm OD hardline hose to support 6-700hp without too much difficulty. By straight I mean no silly 90deg formed bends everywhere, and certainly not lots of them. Ive flow tested my entire fuel system and measured it out the -6 return line. At 60psi test pressure and a 13v, my 2 x 044's were able to push almost 500lph out the single -6 line. If it had been 14v, it would have been 500lph. That's a hell of a lot of fuel out a relatively small pipe ! 9.85 @ 145mph
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