|
|
|
|
Thread Tools | Display Modes |
10-31-2013, 04:57 PM | #51 | |
Former Vendor
Member#: 295846
Join Date: Sep 2011
Chapter/Region:
MWSOC
Location: Crook County, Illinois
Vehicle:WRX FP HTA GT3076R Sexual Chocolate |
Quote:
I feed after a pre filter cyl 3-1 first crossover to 2-4 then to fpr and return back to the tank. Key here like Dom said is keeping fuel temps down and pressure consistent. -Phil
* Registered users of the site do not see these ads.
|
|
10-31-2013, 04:59 PM | #52 | |
Former Vendor
Member#: 190729
Join Date: Oct 2008
Chapter/Region:
NWIC
Location: Marysville, WA
|
Quote:
|
|
10-31-2013, 05:01 PM | #53 |
Scooby Specialist
Member#: 349361
Join Date: Mar 2013
Chapter/Region:
Tri-State
Location: Long Island, NY
Vehicle:2013 STi SWP |
|
10-31-2013, 05:13 PM | #54 |
Scooby Specialist
Member#: 285083
Join Date: Jun 2011
Chapter/Region:
MAIC
Location: Newport News, VA
Vehicle:2006 STi WRB |
How do you feel about fuel dampers, specifically on a car with upgraded lines? Do you recommend still using them, and have you noticed a difference with or without dampers in the system? Iv heard that more total volume of fuel in the system from bigger lines will smooth out the pulses and dampen the flow good enough, but not sure how true this is or at what point it would become unnecessary to use them. Appreciate your posts and information
|
10-31-2013, 05:17 PM | #55 | |
Scooby Specialist
Member#: 349361
Join Date: Mar 2013
Chapter/Region:
Tri-State
Location: Long Island, NY
Vehicle:2013 STi SWP |
Quote:
|
|
10-31-2013, 06:00 PM | #56 | |
Former Vendor
Member#: 190729
Join Date: Oct 2008
Chapter/Region:
NWIC
Location: Marysville, WA
|
Quote:
|
|
10-31-2013, 06:42 PM | #57 |
Scooby Specialist
Member#: 349361
Join Date: Mar 2013
Chapter/Region:
Tri-State
Location: Long Island, NY
Vehicle:2013 STi SWP |
|
10-31-2013, 06:59 PM | #58 |
Scooby Specialist
Member#: 358782
Join Date: Jun 2013
Chapter/Region:
MWSOC
Location: Springfield, Illinois
Vehicle:2013 STi DGM |
|
10-31-2013, 07:19 PM | #59 |
Scooby Specialist
Member#: 349361
Join Date: Mar 2013
Chapter/Region:
Tri-State
Location: Long Island, NY
Vehicle:2013 STi SWP |
|
10-31-2013, 09:41 PM | #60 |
Scooby Newbie
Member#: 301522
Join Date: Nov 2011
Chapter/Region:
International
Location: Sao Paulo - Brazil
Vehicle:2011 WRX Black |
|
11-01-2013, 03:49 AM | #61 |
Scooby Newbie
Member#: 174502
Join Date: Mar 2008
Chapter/Region:
MWSOC
Location: Des Plaines, Il
Vehicle:2007 07 STi WR BLUE Mica |
Confused :(
Hi Guys,
I've been searching about series vs parallel set up for a while, and i gotta tell U Guys IM CONFUSED. I remember couple of nasioc members reporting that parallel set up looks better on paper then series. For me it make a sense but after reading Maxwell posts it doesn't anymore. So please explain why Prodrive has used parallel fuel lines in their WRC Subarus ?? Wouldn't that suggest the paraller is more efficient?? I've a aeromotive fuel lines already and Im about to buy all necessary fittings and hoses to put this fuel system together so please steer me in right direction ( parallel = more spend $$$$$$, series = less $$$$ ) before i ll throw my money on something that I don't need. Thanks Last edited by Ukashi82; 11-01-2013 at 04:52 AM. |
11-01-2013, 09:08 AM | #62 | |
Scooby Specialist
Member#: 358782
Join Date: Jun 2013
Chapter/Region:
MWSOC
Location: Springfield, Illinois
Vehicle:2013 STi DGM |
Quote:
|
|
11-01-2013, 11:12 AM | #63 | |
Former Vendor
Member#: 190729
Join Date: Oct 2008
Chapter/Region:
NWIC
Location: Marysville, WA
|
Quote:
In the end, with all the science aside, it seems to me that you should pick the way that has the least amount of reported problems: serial. I mean people have all these "theories" that they use to justify going parallel, but the only real documented problems anyone has is with parallel. I mean, heck, the first time subaru went parallel, misfire issues for days. Ask any 08 STi guy. In the end, the choice is yours. Last edited by Maxwell Power; 01-03-2014 at 01:52 AM. |
|
11-01-2013, 01:09 PM | #64 |
Scooby Newbie
Member#: 174502
Join Date: Mar 2008
Chapter/Region:
MWSOC
Location: Des Plaines, Il
Vehicle:2007 07 STi WR BLUE Mica |
Maxwell if i decide to keep it in series, what is your recommendation on fuel line size between rails ?? Im thinkin about -6AN from hard fuel line to the fuel rail then -8AN between rails and then -6AN from rail on pass side going to FPR. And -6AN going back from FPR to return hard line. Or keep it simple and do -6AN all around ?? BTW do I need to zero out fuel compensation tables ( Im going to run modified dark blue WRX injectors ) with this setup ??
|
11-01-2013, 01:54 PM | #65 |
Former Vendor
Member#: 190729
Join Date: Oct 2008
Chapter/Region:
NWIC
Location: Marysville, WA
|
that makes no sense at all.
if your supply is -6, then the whole thing should be -6 or smaller. If your supply is -8, then -6 or -8. |
11-01-2013, 03:04 PM | #66 |
Scooby Newbie
Member#: 174502
Join Date: Mar 2008
Chapter/Region:
MWSOC
Location: Des Plaines, Il
Vehicle:2007 07 STi WR BLUE Mica |
|
11-01-2013, 03:08 PM | #67 |
Scooby Newbie
Member#: 174502
Join Date: Mar 2008
Chapter/Region:
MWSOC
Location: Des Plaines, Il
Vehicle:2007 07 STi WR BLUE Mica |
What about compensation tables ??? Should I zeroed them out ???
|
11-01-2013, 04:01 PM | #68 |
Scooby Specialist
Member#: 285083
Join Date: Jun 2011
Chapter/Region:
MAIC
Location: Newport News, VA
Vehicle:2006 STi WRB |
You guys seen this yet?
http://www.rhdjapan.com/sard-jet-pum...preza-gdb.html Seems like the stock jet pump is VERY small and would be a huge restriction on the return line, I have my hanger assembly apart now looking at it, almost seems like it wouldnt matter how big or small of a return line you used as the stock jet pump would still be the restriction by far, I bet you could run a big pump like the walbro 460 and not overrun the stock FPR if you had one of these sard jet pumps. I know alot of evo guys also drill out the siphon orfice after upgrading the fuel pump to get their base fuel pressure back in check, but a properly designed jet pump thats made for a bigger fuel pumps flow seems like it would be a better option. |
11-01-2013, 05:04 PM | #69 | |
Scooby Specialist
Member#: 358782
Join Date: Jun 2013
Chapter/Region:
MWSOC
Location: Springfield, Illinois
Vehicle:2013 STi DGM |
Quote:
|
|
11-02-2013, 06:44 AM | #70 |
Former Vendor
Member#: 190729
Join Date: Oct 2008
Chapter/Region:
NWIC
Location: Marysville, WA
|
It should fit all imprezas. They all use the same jet pump.
I'm actually a bit upset inside that I didn't even think about the jet pump.. I missed something obvious. |
11-02-2013, 03:36 PM | #71 | |
Scooby Specialist
Member#: 285083
Join Date: Jun 2011
Chapter/Region:
MAIC
Location: Newport News, VA
Vehicle:2006 STi WRB |
Quote:
I think most of the subie guys just simply dont care if the fpr is getting overrun or running unstable after throwing in a big pump, and just tune around it to try and cover it up. Also it makes trying to do a bulkhead fitting on the hanger a pain, trying to adapt the return bulkhead fitting back to that stock jet pump somehow. I think im going to order one of these SARD jet pumps and get my fuel hanger setup legit, with 6an bulkheads on the return and feed and also modify the STi plastic fuel box by installing a slightly bigger fitting on it to match the size of the sard jet pump outlet, as id like to keep that stock STi "surge" box in the system with the return running right back in it like it should be so your less likely to get a fuel cut when running low on gas. Ill be sure to post up nice pics and a mini review |
|
11-02-2013, 05:29 PM | #72 |
Former Vendor
Member#: 295846
Join Date: Sep 2011
Chapter/Region:
MWSOC
Location: Crook County, Illinois
Vehicle:WRX FP HTA GT3076R Sexual Chocolate |
The injector ia still getting fuel?
Its the firat one to open that line should always have base pressure. I run my fuel lines the saem way all the time. Doesn't matter. I guess if all the injectors opened at the same time it would make a difference. The goal is not a lot of line to heat up. The rails constantly have pressure. |
11-02-2013, 05:51 PM | #73 |
Former Vendor
Member#: 295846
Join Date: Sep 2011
Chapter/Region:
MWSOC
Location: Crook County, Illinois
Vehicle:WRX FP HTA GT3076R Sexual Chocolate |
|
11-02-2013, 06:26 PM | #74 |
Scooby Specialist
Member#: 39149
Join Date: Jun 2003
Chapter/Region:
Tri-State
|
|
11-02-2013, 06:49 PM | #75 |
Former Vendor
Member#: 295846
Join Date: Sep 2011
Chapter/Region:
MWSOC
Location: Crook County, Illinois
Vehicle:WRX FP HTA GT3076R Sexual Chocolate |
So wouldnt it make more sense if the fuel rail feeding 1-3 gets fuel first?
4 is getting fuel last regardless. So length of lines and fuel temps are the most important things to think about when doing lines/rails. Ive thought about all of this stuff extensively. This is how I have designed my rails/line setups. Im working on some reflective film ideas for the lines. polyamide mylar is cool stuff. -Phil |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Parallel Fuel Lines Anyway to Log fuel to each cylinder? | kakarotoni | AccessPort | 1 | 08-26-2009 12:54 PM |
would the series to parallel fuel line conversion for RS work on WRX? | whiterabbit | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 1 | 02-22-2004 01:16 AM |
Series to Parallel Fuel Mod or New Fuel Rails? | Need4Boost | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 6 | 04-10-2003 10:05 AM |
Question on finding parts for the series to parallel fuel rail mod | Legacy777 | Normally Aspirated Powertrain | 1 | 02-24-2003 09:06 AM |
DIY Series To Parallel Fuel Delivery Modification | thoughto | Factory 2.0L Turbo Powertrain (EJ Series Factory 2.0L Turbo) | 4 | 12-28-2002 12:19 AM |