Return Fuel System
03-14-2009, 12:29 AM
#1
Return Fuel System
Well...started a return type fuel system today...had the whole intake apart anyway...so here goes
I bought a set of the New OBX Fuel rails.........took a bit of work...fittings wouldn't fit without rework..but after a about a 1/2 hour with a tap...and they went together properly. I hope that when I pressure them up they don't leak.
At this point they are not plug and play...so beware. I think the KG parts ones are worth the extra money
Heres a picture of the primary and secondary rails off the car ...gotta clean them out and install in the morning
I'll post more pictures as it progresses
I bought a set of the New OBX Fuel rails.........took a bit of work...fittings wouldn't fit without rework..but after a about a 1/2 hour with a tap...and they went together properly. I hope that when I pressure them up they don't leak.
At this point they are not plug and play...so beware. I think the KG parts ones are worth the extra money
Heres a picture of the primary and secondary rails off the car ...gotta clean them out and install in the morning
I'll post more pictures as it progresses
03-14-2009, 01:26 AM
#3
Well...started a return type fuel system today...had the whole intake apart anyway...so here goes
I bought a set of the New OBX Fuel rails.........took a bit of work...fittings wouldn't fit without rework..but after a about a 1/2 hour with a tap...and they went together properly. I hope that when I pressure them up they don't leak.
At this point they are not plug and play...so beware. I think the KG parts ones are worth the extra money
Heres a picture of the primary and secondary rails off the car ...gotta clean them out and install in the morning
I'll post more pictures as it progresses
I bought a set of the New OBX Fuel rails.........took a bit of work...fittings wouldn't fit without rework..but after a about a 1/2 hour with a tap...and they went together properly. I hope that when I pressure them up they don't leak.
At this point they are not plug and play...so beware. I think the KG parts ones are worth the extra money
Heres a picture of the primary and secondary rails off the car ...gotta clean them out and install in the morning
I'll post more pictures as it progresses
Good luck with your setup
Chirs
03-14-2009, 12:53 PM
#5
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Dan's been a busy guy!
Good luck with the project, curious to see how it turns out.
Good luck with the project, curious to see how it turns out.
03-14-2009, 01:21 PM
#6
03-14-2009, 04:14 PM
#8
Basically more flow..and hopefully more consistent fuel pressure
This is turning into a lot more work than I thought...there is not a lot of room for stuff under there
Found out sometimes the OEM parts are a lot more involved than I would have though...for instance..the injector connectors are different than most aftermarket ones..they are smaller and thinner...the off the shelf ones are bulkier and don't fit easily I should have some pictures a bit later of it in the car....had fun getting the injectors in..and all the parts hooked up..
This is turning into a lot more work than I thought...there is not a lot of room for stuff under there
Found out sometimes the OEM parts are a lot more involved than I would have though...for instance..the injector connectors are different than most aftermarket ones..they are smaller and thinner...the off the shelf ones are bulkier and don't fit easily
I should have some pictures a bit later of it in the car....had fun getting the injectors in..and all the parts hooked up..
03-14-2009, 06:54 PM
#10
Lol--i know the language you are feeling Dan---!
while you are doing this put a phenolic gasket on your intake?
you are going to warm the fuel up some--dont forget that.
are you returning to the fuel cup? Turbulence with that?
using the stock 5/16 line right?
what kind of fuel pressure probs are you having? Track only?
the 09 pump is working well for us so far. Have you seen one? It address's a lot of issues.
olddragger
while you are doing this put a phenolic gasket on your intake?
you are going to warm the fuel up some--dont forget that.
are you returning to the fuel cup? Turbulence with that?
using the stock 5/16 line right?
what kind of fuel pressure probs are you having? Track only?
the 09 pump is working well for us so far. Have you seen one? It address's a lot of issues.
olddragger
03-14-2009, 09:35 PM
#13
Well..I got it all hooked up...not without a lot of swearing..taking it apart multiple times to hook everything up so that the puzzle worked in the end
There is always one bolt or nut or connector that doesn't behave
I hope I don't have a leak..or it will be apart again to tighten it up
I'll post pictures in the morning if it doesn't snow
There is always one bolt or nut or connector that doesn't behave
I hope I don't have a leak..or it will be apart again to tighten it up
I'll post pictures in the morning if it doesn't snow
03-14-2009, 10:08 PM
#14
the enemy in the mirror
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very nice.
I'm no fuel system expert so i've got a question:
If my memory is accurate, the stock returnless system has a pulse damper on the fuel rail. Is there any value to having a damper on a return type system? Do you have one? I don't think i recognized it in the pic.
I'm no fuel system expert so i've got a question:
If my memory is accurate, the stock returnless system has a pulse damper on the fuel rail. Is there any value to having a damper on a return type system? Do you have one? I don't think i recognized it in the pic.
03-15-2009, 12:10 AM
#16
very nice.
I'm no fuel system expert so i've got a question:
If my memory is accurate, the stock returnless system has a pulse damper on the fuel rail. Is there any value to having a damper on a return type system? Do you have one? I don't think i recognized it in the pic.
I'm no fuel system expert so i've got a question:
If my memory is accurate, the stock returnless system has a pulse damper on the fuel rail. Is there any value to having a damper on a return type system? Do you have one? I don't think i recognized it in the pic.
That's one of those....... some say you gotta have..others say you don't kinda things
I have a big canister filter...and the FPR will act as a damper as well..so I don't plan on using one
Hell they make great fire starters too
03-15-2009, 12:23 PM
#18
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This is interesting and a full description would be welcome.
I wanted to put in a fuel pressure gauge in when I installed my non-return upgrade. Unfortunately, what I thought would be easy turned into a much more difficult process and I abandonded it. Is there a straight forward way to put in a sender into the fuel line?
I wanted to put in a fuel pressure gauge in when I installed my non-return upgrade. Unfortunately, what I thought would be easy turned into a much more difficult process and I abandonded it. Is there a straight forward way to put in a sender into the fuel line?
03-15-2009, 12:29 PM
#19
You can buy an adapter that fits between the stock metal fuel line and the nylon line in the engine bay....that way it's plug and play without cutting anything. Otherwise if you don't mind going to rubber high pressure line..you can replace the feed line from the fuel rail to the metal line and put a fuel sensor adapter in there....
I think PTP made the adapter?? There was a thread on here somewhere on it a long time ago.
Otherwise look for Russell or Aeroquip -AN fittings..
I think PTP made the adapter?? There was a thread on here somewhere on it a long time ago.
Otherwise look for Russell or Aeroquip -AN fittings..
03-15-2009, 02:39 PM
#20
Well....here it is....Pictures aren't the best..but it's snowing outside
Thought that I'd add a list of parts for anyone interested
OBX Fuel rails
4 16mm X -6 AN adapters
4 crush washers
12 feet -6 SS hose
2 X 180 degree -6 to tube
Canton Racing canister fuel filter (1 micron filter) with -6 adapters
Fuel pressure adapter -6 female to -6 male
2 X 90 deg -6 to tube
1 X 45 deg -6 to tube
3 X straight-6 to tube
connectors for FPR..depends on what type you use
I used high pressure rubber tube for the FPR to stock fuel line..and re-used the stock quick connect on both ends...worked well
You also need to modify your fuel pump with a -6AN 90 degree bulkhead fitting and connect the pump the feed line to it
I have to pressurize it next...wish me luck
Thought that I'd add a list of parts for anyone interested
OBX Fuel rails
4 16mm X -6 AN adapters
4 crush washers
12 feet -6 SS hose
2 X 180 degree -6 to tube
Canton Racing canister fuel filter (1 micron filter) with -6 adapters
Fuel pressure adapter -6 female to -6 male
2 X 90 deg -6 to tube
1 X 45 deg -6 to tube
3 X straight-6 to tube
connectors for FPR..depends on what type you use
I used high pressure rubber tube for the FPR to stock fuel line..and re-used the stock quick connect on both ends...worked well
You also need to modify your fuel pump with a -6AN 90 degree bulkhead fitting and connect the pump the feed line to it
I have to pressurize it next...wish me luck
Last edited by dannobre; 03-15-2009 at 02:42 PM.
03-15-2009, 06:11 PM
#22
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Looks good, if I had a turbo this is the route I'd want to go. What FPR are you using?
Cant believe the snow. We canceled an autoX today, had about 4 inches at Bremerton motorsports park.
Cant believe the snow. We canceled an autoX today, had about 4 inches at Bremerton motorsports park.
03-15-2009, 10:43 PM
#24
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Snow's good, keeps the intake temps down
Back on topic however - I've done this on the buggy with an 044 pump and an 'aeromotive' style billet regulator so I can adjust the fuel pressure - the fuel rail is much cooler when running now, used to have problems with the fuel in the rail boiling when lugging up steep hills at low speed.
Not as pretty as that though, I just modified the existing rail to take some -8 braided hose.
Back on topic however - I've done this on the buggy with an 044 pump and an 'aeromotive' style billet regulator so I can adjust the fuel pressure - the fuel rail is much cooler when running now, used to have problems with the fuel in the rail boiling when lugging up steep hills at low speed.
Not as pretty as that though, I just modified the existing rail to take some -8 braided hose.
Last edited by PhillipM; 03-15-2009 at 10:46 PM.
03-15-2009, 10:59 PM
#25
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Did you get as frustrated as i did when doing them -6 lines?? Man every time i cut they would un-braid so bad. I ended up rigging something up for them small lines.