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12-10-2018, 07:59 PM
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#1
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,900
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Gas Lines: Rubber Vs. PTFE
Planning on redoing fuel lines this winter, and had originally planned on rubber braided stuff but seems like PTFE is better (and pricier).
Car is non E85.
Anyone have experience with either, and what would you recommend?
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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12-10-2018, 08:03 PM
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#2
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Join Date: Nov 2007
Location: Jackson, NJ
Posts: 1,723
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Quote:
Originally Posted by LTb1ow
Planning on redoing fuel lines this winter, and had originally planned on rubber braided stuff but seems like PTFE is better (and pricier).
Car is non E85.
Anyone have experience with either, and what would you recommend?
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PTFE. Just in case E85 becomes readily available.
I helped another friend do PTFE lines on his circle track race car because he runs methanol. They are not worse to do than rubber.
__________________
1983 camaro- Scrap
1988 camaro- Also scrap
'05 Silverado- You guessed it, scrap
1988 TRX 250R- Ported w/ high compression on 110 octane- Out 60' your LT1
Jersey Shore Street Car Takeover (JSSCT) Founder
Quote:
Originally Posted by LS1ow
and once i get PHB, what do i ajust it too?
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Quote:
Originally Posted by Jersey Mike
Seven.
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12-10-2018, 08:07 PM
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#3
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,900
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Quote:
Originally Posted by wretched73
PTFE. Just in case E85 becomes readily available.
I helped another friend do PTFE lines on his circle track race car because he runs methanol. They are not worse to do than rubber.
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I have done both, just wary of the price of doing PTFE.
Currently have rubber lines up front and no overwhelming gas odors so, torn.
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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12-10-2018, 08:18 PM
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#4
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Join Date: Nov 2007
Location: Jackson, NJ
Posts: 1,723
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Quote:
Originally Posted by LTb1ow
I have done both, just wary of the price of doing PTFE.
Currently have rubber lines up front and no overwhelming gas odors so, torn.
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I'd do PTFE solely so you have the option to run E85 or straight meth in the future.
__________________
1983 camaro- Scrap
1988 camaro- Also scrap
'05 Silverado- You guessed it, scrap
1988 TRX 250R- Ported w/ high compression on 110 octane- Out 60' your LT1
Jersey Shore Street Car Takeover (JSSCT) Founder
Quote:
Originally Posted by LS1ow
and once i get PHB, what do i ajust it too?
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Quote:
Originally Posted by Jersey Mike
Seven.
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12-10-2018, 08:25 PM
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#5
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Ebearnezer Scrooge/Power Member/Lips
Join Date: May 2006
Location: Hamilton, Mercer county
Posts: 4,141
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If you do PTFE you 'll, essentially, never have to change them again where rubber you definitely will after 5+ years unless you drain all the fuel out of them all the time
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12-11-2018, 07:14 AM
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#6
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
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Quote:
Originally Posted by PolarBear
If you do PTFE you 'll, essentially, never have to change them again where rubber you definitely will after 5+ years unless you drain all the fuel out of them all the time
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Does WOT count as fuel draining?
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12-11-2018, 10:54 PM
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#7
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10 Second Club / Meet Coordinator
Join Date: Dec 2004
Location: Roxbury, NJ
Posts: 2,111
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I would do PTFE. I Did my whole fuel feed and return system just this past winter. It was worth it (for me) to just go all out and do it once and have them be done for good on the car. everything from the tank to meeting up with the fuel rails is PTFE and -AN fittings. -8 feed and -6 return. cost a few hundred dollars because I bought about 4 feet EXTRA of each size of line, extra fittings, extra olives, and some billet clamps to hold both lines together. all from RACETRONIX
I just knew that if I did PTFE it would eliminate me having to go re-do them anytime in the nearby future. I also knew that E85 isn't around us NOW, but that PTFE will be totally fine if it does come up for future use after the engine project is done next winter.
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1987 IROC-Z - modified
Last edited by IROCZman15; 12-11-2018 at 10:55 PM.
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12-12-2018, 03:22 PM
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#8
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Join Date: Aug 2013
Location: Cape May County
Posts: 24
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PTFE! all pump gas has some ethanol in it.
Once and done in the long run it's worth the extra expense.
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A man's garage is his castle
1970 Camaro SS
2002 Camaro B4C
2015 Camaro 1SS 1LE
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02-04-2019, 07:27 PM
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#9
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,900
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So, almost ready to pull the trigger for this winter project.
Question now, my thought was to add another bulkhead fitting to bottom of tank for return line. But, then I got thinking what the "proper" way to return fuel to tank may be.
Any thoughts? Overthinking things again?
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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02-05-2019, 06:45 AM
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#10
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Join Date: Nov 2007
Location: Jackson, NJ
Posts: 1,723
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Quote:
Originally Posted by LTb1ow
So, almost ready to pull the trigger for this winter project.
Question now, my thought was to add another bulkhead fitting to bottom of tank for return line. But, then I got thinking what the "proper" way to return fuel to tank may be.
Any thoughts? Overthinking things again?
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I was going to say, have the return enter and dump fuel right on your fuel pump. Buttttt your fuel pump is external so that will be messy. Just dump anywhere in tank
__________________
1983 camaro- Scrap
1988 camaro- Also scrap
'05 Silverado- You guessed it, scrap
1988 TRX 250R- Ported w/ high compression on 110 octane- Out 60' your LT1
Jersey Shore Street Car Takeover (JSSCT) Founder
Quote:
Originally Posted by LS1ow
and once i get PHB, what do i ajust it too?
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Quote:
Originally Posted by Jersey Mike
Seven.
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02-05-2019, 07:53 AM
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#11
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
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Do you need a check valve to prevent fuel backing up into fuel line or fpr is good enough?
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02-05-2019, 08:17 AM
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#12
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,900
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Quote:
Originally Posted by sweetbmxrider
Do you need a check valve to prevent fuel backing up into fuel line or fpr is good enough?
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I don't follow. What do you mean?
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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02-05-2019, 08:37 AM
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#13
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Join Date: Nov 2007
Location: Jackson, NJ
Posts: 1,723
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Quote:
Originally Posted by sweetbmxrider
Do you need a check valve to prevent fuel backing up into fuel line or fpr is good enough?
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the entire fuel system will always have fuel in it, the return line has enough pressure to push fuel into the tank, even if the tank is full and return in at the lowest point
__________________
1983 camaro- Scrap
1988 camaro- Also scrap
'05 Silverado- You guessed it, scrap
1988 TRX 250R- Ported w/ high compression on 110 octane- Out 60' your LT1
Jersey Shore Street Car Takeover (JSSCT) Founder
Quote:
Originally Posted by LS1ow
and once i get PHB, what do i ajust it too?
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Quote:
Originally Posted by Jersey Mike
Seven.
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02-05-2019, 10:02 AM
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#14
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
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Quote:
Originally Posted by wretched73
the entire fuel system will always have fuel in it, the return line has enough pressure to push fuel into the tank, even if the tank is full and return in at the lowest point
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I'm curious about the head pressure acting upon the return line especially when the car/pump is off.
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02-05-2019, 02:03 PM
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#15
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,900
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Quote:
Originally Posted by sweetbmxrider
I'm curious about the head pressure acting upon the return line especially when the car/pump is off.
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Yea, and that is something I am thinking of. But, the fuel pump is the same way, feed line while car is off will drain tank if punctured. (not saying thats right but it is what happens with a sumped tank)
My concern with running return line bulkhead up top is I have no way to not spraying fuel in tank and aerotating the crap out of it. Whereas a sump return in theory minimizes that.
Either way tank is coming down, so guess I will come up with something soon
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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02-05-2019, 02:51 PM
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#16
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
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Why not put a line in the tank that dumps it on the bottom?
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02-05-2019, 07:32 PM
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#17
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10 Second Club / Meet Coordinator
Join Date: Dec 2004
Location: Roxbury, NJ
Posts: 2,111
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Quote:
Originally Posted by LTb1ow
Yea, and that is something I am thinking of. But, the fuel pump is the same way, feed line while car is off will drain tank if punctured. (not saying thats right but it is what happens with a sumped tank)
My concern with running return line bulkhead up top is I have no way to not spraying fuel in tank and aerotating the crap out of it. Whereas a sump return in theory minimizes that.
Either way tank is coming down, so guess I will come up with something soon
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yes, that was my thought, you wont want to aerate it... runt eh return line so that it terminates as close to the bottom of the fuel tank's floor as possible . less turbulence
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1987 IROC-Z - modified
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02-06-2019, 03:03 PM
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#18
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,900
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More ramblings from a bored imagineer.
I am going to leave a check valve in one line out of top of tank, should be fine leaving the non vented cap on filler neck?
And how far can the fuel pump be from tank? Assuming its lower than sump.
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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02-06-2019, 07:07 PM
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#19
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
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Quote:
Originally Posted by LTb1ow
More ramblings from a bored imagineer.
I am going to leave a check valve in one line out of top of tank, should be fine leaving the non vented cap on filler neck?
And how far can the fuel pump be from tank? Assuming its lower than sump.
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Check valve relieving pressure from tank? Yeah, so long as the check valve doesn't need to see 100 psi ![ROFL](http://www.njfboa.org/forums/images/smilies/rofl.gif)
Probably best to ask the pump manufacturer.
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03-14-2019, 08:04 PM
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#20
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,900
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And PTFE won out, my wallet lost. This is just for the feed, gonna tackle the return after I get this setup.
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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03-15-2019, 06:17 AM
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#21
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^^^Lover of bad cars^^^ Meet Coordinator
Join Date: Aug 2007
Location: Whitehouse Station
Posts: 2,255
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good choice
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1986 Honda VFR750 - 89.3HP to the wheel
2000 Trans Am M6 - Mods: Yes.
2018 Durango R/T - AFE Intake, JLT Catch Can, Stainless Works Catback, Vinyl Dodge Racing Stripes
2003 Toyota Matrix XRS M6 - Lol
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03-15-2019, 06:48 AM
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#22
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10 Second Club / Meet Coordinator
Join Date: Dec 2004
Location: Roxbury, NJ
Posts: 2,111
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yup, great choice, should be good for a very very long time.
my filter is very much the same. I didn't bother to open it up this year to inspect the element.... wasn't sure that I needed to after only 10 months of use. any idea how often to check/clean/replace these types of filters?
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1987 IROC-Z - modified
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03-15-2019, 08:03 AM
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#23
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Lord of the rings / 10 Second Club / Meet Coordinator
Join Date: Aug 2004
Location: Millstone Township, NJ
Posts: 6,359
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Why not all black fittings?
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97 T/A Ram Air Convt
Forever dyno queen / 777rwhp 662 rwtq @ 17lbs / 10.2 @ 140
'24 Corvette Z06
17 Sierra 2500HD Dmax
81 Turbo TA
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03-15-2019, 08:57 AM
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#24
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,900
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Quote:
Originally Posted by IROCZman15
yup, great choice, should be good for a very very long time.
my filter is very much the same. I didn't bother to open it up this year to inspect the element.... wasn't sure that I needed to after only 10 months of use. any idea how often to check/clean/replace these types of filters?
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I prob will check/clean once a season, I rarely drive the car.
Quote:
Originally Posted by Blackbirdws6
Why not all black fittings?
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Sadly the black 90* were back-order only and I was impatient.
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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03-15-2019, 04:21 PM
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#25
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
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Quote:
Originally Posted by Blackbirdws6
Why not all black fittings?
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Agreed. So much disappoint. Ebay, amazon, or jegs coulda hooked you up brah.
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