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08-16-2010, 11:52 PM
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CC Member
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Join Date: Jul 2009
Location: Redland Bay,
QLD
Cobra Make, Engine: Harrison #100 under construction
Posts: 1,109
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Not Ranked
Fuel line
A question on fuel line from tank to mill & return.
Copper or al-u min-ium ?
3/8' or 1/2' ?
My thinking is 1/2 to & 3/8 from, any suggestions/recommendations will be gratefully appreciated.
Rog
Harry 100
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08-17-2010, 12:17 AM
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CC Member
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Join Date: Sep 2008
Cobra Make, Engine: Harrison #95, 302 HO
Posts: 128
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Not Ranked
Rog,
Have a chat with Warrick. He sells stainless steel lines the correct length and size including hose barbs. Thats where I got mine.
Cheers Bob
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Harrison No 95
Mt Tamborine Qld
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08-17-2010, 01:08 AM
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CC Member
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Join Date: Jul 2009
Location: Redland Bay,
QLD
Cobra Make, Engine: Harrison #100 under construction
Posts: 1,109
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Not Ranked
errr........I knew that !!
How is the wiring coming along Bob, I heard that you had a problem. Is it solved yet ?
Rog
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08-17-2010, 05:31 AM
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CC Member
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Join Date: Sep 2008
Cobra Make, Engine: Harrison #95, 302 HO
Posts: 128
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Not Ranked
OK just trying to be helpful.
I have had problems with the powercells. Spent nearly an hour on the phone last weekend with Mike Webber from Isis carrying out tests. Seems I may have faulty powercells. He is sending me a couple of replacements.
Cheers Bob
__________________
Harrison No 95
Mt Tamborine Qld
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08-17-2010, 02:20 PM
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CC Member
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Join Date: Jun 2007
Location: Sunshine Coast Qld,
QLD
Cobra Make, Engine: Harrison # 80; Ford 5.0L HO Trickflow heads, cam and rockers and MassFlow EFI
Posts: 3,482
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Not Ranked
Geez Bob, it is always the one thing that you should be able to trust that is the failure. 'Till we know that, we tear apart everything else! I had a similar experience with an ECU.
__________________
Merv
Ford Cobra
Harrison #80.
Peregian Beach
Sunshine Coast Qld.
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08-17-2010, 02:44 PM
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CC Member
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Join Date: Jul 2009
Location: Redland Bay,
QLD
Cobra Make, Engine: Harrison #100 under construction
Posts: 1,109
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Not Ranked
are you finding them helpful ?
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08-17-2010, 02:58 PM
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CC Member
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Join Date: Sep 2008
Cobra Make, Engine: Harrison #95, 302 HO
Posts: 128
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Yes they are helpful. I obviously thought it was me and rewired the system with the same results. I have been talking with them for a couple of months trying various things without result. Finally he rang me and we ran through some tests together. He had an identical set up on his test rig whilst on the phone so he could see what should happen. He said he had not seen this problem before and must be a dud powercell.
Bob
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Harrison No 95
Mt Tamborine Qld
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08-17-2010, 05:08 PM
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CC Member
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Join Date: Jan 2001
Location: Sunbury,
VIC
Cobra Make, Engine: Rat Rod Racer, LS1 & T56
Posts: 5,391
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Not Ranked
Quote:
Originally Posted by Rog246
A question on fuel line from tank to mill & return.
Copper or al-u min-ium ?
3/8' or 1/2' ?
My thinking is 1/2 to & 3/8 from, any suggestions/recommendations will be gratefully appreciated.
Rog
Harry 100
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Definitely not copper, highly illegal and potentially dangerous.
Steel Bundy tube is plated against corrosion and can look sort of copper colored so might look like copper tube. This is what is used for fuel lines in production cars.
I went with aluminum hard lines for mine. Probably overkill with a 1/2" main and a 3/8" return. A 3/8" main and a 5/16" return would probably be plenty.
Cheers
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Mike Murphy
Melbourne Australia
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08-17-2010, 05:15 PM
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CC Member
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Join Date: Feb 2008
Cobra Make, Engine: HARRISON, FORD 302, SOLD
Posts: 771
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i went with Warwicks stainless lines (can't remember the size) They are the correct length for his car with barbs on each end for flex line connection to tank and injection. I had to cut these off at the engine end as i went with speed flow hose and needed a different end fitting.
I was going to get them made locally but buy the time i organised the stainless tube and TIG weding it was easier and cheaper to use Warwicks.
I used bundy tube combined with some left over fuel hose for the evap fuel lines to charcoal cannister.
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08-17-2010, 08:32 PM
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CC Member
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Join Date: Jul 2009
Location: Redland Bay,
QLD
Cobra Make, Engine: Harrison #100 under construction
Posts: 1,109
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thanks for that Mr Murphy.
I'm a bit surprised that you're not referred as SPUD though.
dare I ask why not ??
Rog
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08-17-2010, 08:35 PM
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CC Member
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Join Date: Jul 2009
Location: Redland Bay,
QLD
Cobra Make, Engine: Harrison #100 under construction
Posts: 1,109
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Well, that's good to know Bob. At least they are trying to be real helpful, which is great.
Rog
Harry 100
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08-17-2010, 08:42 PM
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CC Member
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Join Date: Jul 2009
Location: Redland Bay,
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Cobra Make, Engine: Harrison #100 under construction
Posts: 1,109
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Quote:
Originally Posted by byroncobra
i went with Warwicks stainless lines (can't remember the size) They are the correct length for his car with barbs on each end for flex line connection to tank and injection. I had to cut these off at the engine end as i went with speed flow hose and needed a different end fitting.
I was going to get them made locally but buy the time i organised the stainless tube and TIG weding it was easier and cheaper to use Warwicks.
I used bundy tube combined with some left over fuel hose for the evap fuel lines to charcoal cannister.
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Well that seems like a smart move.
__________________
Rog 246
Harrison #100
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08-17-2010, 08:43 PM
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CC Member
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Join Date: Jan 2001
Location: Sunbury,
VIC
Cobra Make, Engine: Rat Rod Racer, LS1 & T56
Posts: 5,391
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Quote:
Originally Posted by Rog246
thanks for that Mr Murphy.
I'm a bit surprised that you're not referred as SPUD though.
dare I ask why not ??
Rog
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I have been called Spud in the past but a lot of my friends just call me Mikey these days.
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Mike Murphy
Melbourne Australia
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08-17-2010, 09:16 PM
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CC Member
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Join Date: May 2002
Location: Mission Viejo,
CA
Cobra Make, Engine: Kirkham, 427 side oiler
Posts: 225
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I did some fluids dynamic calcs using 3/8" supply and return tube diameters and fuel flow from a KC482 and 3/8" tube is plenty big enough to minimize the pressure drop in the line.
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08-17-2010, 10:02 PM
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CC Member
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Join Date: Jul 2009
Location: Redland Bay,
QLD
Cobra Make, Engine: Harrison #100 under construction
Posts: 1,109
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Thanks for that Jim. Appreciate the response
Rog
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Rog 246
Harrison #100
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