Will 1/4" Fuel line be OK for D-Jet?, Trouble finding metric locally... |
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Will 1/4" Fuel line be OK for D-Jet?, Trouble finding metric locally... |
D1A3 |
Sep 28 2013, 10:14 AM
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#1
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Gruppe Neun Vierzehn Südosten Group: Members Posts: 362 Joined: 3-June 04 From: Atlanta, GA Member No.: 2,152 Region Association: South East States |
Hi Folks,
I replaced my fuel pump and of my old decrepit and dry rotted lines have sprung leaks... good thing the car was still in the driveway! :-) So, I went to my FLAPS and the closest thing they have that visually matches the old cloth braided line is 1/4" which is slightly smaller at 6.35MM vs the 7MM I have seen recommended elsewhere. The trouble is that I also see folks posting 8MM as the size to use... Which is closely aligned with 5/16" (7.9MM). At some point, my car was upgraded to metal lines running through the center console and the old lines seem to fit really good. I'm afraid if I go to 5/16" that it will be too big. If I go to 1/4" it will be too small and starve the engine... Car is a stock '76 2.0L. My lines up front are all good, the injector elbows have been replaced in the past and look good. I'm only replacing the lines from the rear firewall to the fuel rails, so we are talking about the long line from the tunnel that crosses the back of the engine bay to the fuel regulator and then the return off the fuel rail by the battery back down to the center tunnel... Thoughts here? Appreciate any and all feedback. |
SLITS |
Sep 28 2013, 10:19 AM
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#2
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
I doubt that 1/4" would starve the engine, but I would and have used 5/16". All rubber to steel connections are double hose clamped.
Additionally, I run a tap over the end of the steel tube to groove it slightly. Gives a rougher surface for the hose to adhere to. |
D1A3 |
Sep 28 2013, 11:15 AM
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#3
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Gruppe Neun Vierzehn Südosten Group: Members Posts: 362 Joined: 3-June 04 From: Atlanta, GA Member No.: 2,152 Region Association: South East States |
I doubt that 1/4" would starve the engine, but I would and have used 5/16". All rubber to steel connections are double hose clamped. Additionally, I run a tap over the end of the steel tube to groove it slightly. Gives a rougher surface for the hose to adhere to. OK, On my way to get the 5/16"... Thanks! |
JeffBowlsby |
Sep 28 2013, 11:35 AM
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#4
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914 Wiring Harnesses Group: Members Posts: 8,520 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None |
Why not just wait a few days and have the correct hose delivered from an online source...?
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VaccaRabite |
Sep 28 2013, 01:47 PM
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#5
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En Garde! Group: Admin Posts: 13,449 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
'cause you can't find ethanol rated fuel hose in metric. Or at least I can't.
Zach |
r_towle |
Sep 28 2013, 07:31 PM
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#6
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Custom Member Group: Members Posts: 24,584 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
Seriously, you can't find any?
Go to auto Atlanta in Marietta and pick up what you need. Use metric, |
VaccaRabite |
Sep 28 2013, 09:20 PM
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#7
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En Garde! Group: Admin Posts: 13,449 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
I can find metric fuel hose that will need to be replaced every few years as the ethanol eats it up, or I can find find imperial fuel hose rated for alcohol.
As of yet, I've not bought either, hoping to find alcohol rated metric hose. Zach |
r_towle |
Sep 29 2013, 08:31 AM
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#8
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Custom Member Group: Members Posts: 24,584 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
I can find metric fuel hose that will need to be replaced every few years as the ethanol eats it up, or I can find find imperial fuel hose rated for alcohol. As of yet, I've not bought either, hoping to find alcohol rated metric hose. Zach Northern Foreign Autoparts in Nashua NH has rolls of the stuff. Happens to be local to me. So, it must be made somewhere. My other comment was directed at the OP who lives in Atlanta and would be a short drive to Husseys place, who should stock all of it by the roll. rich |
SLITS |
Sep 29 2013, 08:40 AM
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#9
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
When I bought rolls of the Goodyear Fluoroelastomer/Nitrile (30R9) hose, it wasn't offered in metric sizes that I could see. I purchased 5/16" and 3/8".
Also, from what I have heard the elastomer liner in the hose will roll up and block the hose if it is a really tight fit. This is just a rumor as I haven't experienced it. I'll let you know when we go to start Glenn Sagers' 3.0L conversion in 2016 (yes, that is a poke at Glenn). |
D1A3 |
Oct 2 2013, 07:27 PM
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#10
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Gruppe Neun Vierzehn Südosten Group: Members Posts: 362 Joined: 3-June 04 From: Atlanta, GA Member No.: 2,152 Region Association: South East States |
I can find metric fuel hose that will need to be replaced every few years as the ethanol eats it up, or I can find find imperial fuel hose rated for alcohol. As of yet, I've not bought either, hoping to find alcohol rated metric hose. Zach Northern Foreign Autoparts in Nashua NH has rolls of the stuff. Happens to be local to me. So, it must be made somewhere. My other comment was directed at the OP who lives in Atlanta and would be a short drive to Husseys place, who should stock all of it by the roll. rich Yeah, I don't have the time anymore to drive an hour there, an hour back and then of course the hour to hang out, chat and look at all the other cool stuff at AA. Especially for $20 worth of hose. This was something I needed to get done in a short period of time... did not want to wait days, needed the instant gratification too. :-) The 5/16 worked fine and now I'm driving again! (IMG:style_emoticons/default/driving.gif) Appreciate everyone's support and comments! |
76-914 |
Oct 3 2013, 08:58 AM
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#11
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,505 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California |
When I bought rolls of the Goodyear Fluoroelastomer/Nitrile (30R9) hose, it wasn't offered in metric sizes that I could see. I purchased 5/16" and 3/8". Also, from what I have heard the elastomer liner in the hose will roll up and block the hose if it is a really tight fit. This is just a rumor as I haven't experienced it. I'll let you know when we go to start Glenn Sagers' 3.0L conversion in 2016 (yes, that is a poke at Glenn). You heard right, Ron. The inner liner can roll. I found a little WD40 and needle nose pliers will "prime" the 1/4" 30R9 when sliding it over injectors (they're the worst). Spray a little WD then push the pliers inside (closed position) and push 'n turn the pliers. Also, you will need to allow for the extra radius. The 30R9 tends to kink easier as it is more supple. |
rudedude |
Oct 3 2013, 10:13 AM
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#12
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Senior Member Group: Members Posts: 510 Joined: 1-January 05 From: minneapolis, mn Member No.: 3,387 Region Association: Upper MidWest |
Does this mean that any of the cloth braided fuel hose shouldn't be used if using ethanol blended fuels?
Thanks, |
SLITS |
Oct 3 2013, 10:34 AM
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#13
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
Does this mean that any of the cloth braided fuel hose shouldn't be used if using ethanol blended fuels? Thanks, Cloth braided or not, the FI hose of old the rubber will disintegrate over a period of time. That's why the came up with the "ethanol resistant" hose and be able to charge you $4 - $5 a foot. |
VaccaRabite |
Oct 3 2013, 06:08 PM
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#14
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En Garde! Group: Admin Posts: 13,449 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
The cloth hose needs to be checked annually for cracks or weeping fuel. The alcohol really eats the rubber. It will not last 10 years - but maybe 3 - 4.
Get hose rated for alcohol. |
Harpo |
Oct 3 2013, 07:04 PM
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#15
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Senior Member Group: Members Posts: 1,304 Joined: 21-August 11 From: Motor City aka Detroit Member No.: 13,469 Region Association: None |
You can get the correct fuel lines from Tangerine, I just did.
David |
Bartlett 914 |
Oct 4 2013, 06:34 AM
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#16
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Advanced Member Group: Members Posts: 2,216 Joined: 30-August 05 From: South Elgin IL Member No.: 4,707 Region Association: Upper MidWest |
I hear debates about 5/16 and 8 mm often. The 5/16" is smaller by .0024" and we are talking about rubber. All manufactures will have plus and minus tolerances.
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