firehawk618 Posted August 30, 2014 Share Posted August 30, 2014 That 3rd line has to be some kind of emissions vapor line. Don't all car's still use a charcoal canister? If memory serves me correctly any foreign vapor will end up back in the tank vs the atmosphere. 10' CTS-V, A6, Airraid, 2.4 upper, ID850's, self tuned. SOLD:06' LGT Wagon. BNR16G, Catless UP, DOWN, Hexmods VB, Hexmods diff bushings, BIG TMIC. Best 0-60: 4.651 by AP 1/4= 13.678@100.73 mph, 1.945 60', Automatic transmission. Link to comment Share on other sites More sharing options...
elgin.owens Posted August 31, 2014 Author Share Posted August 31, 2014 Any thoughts on what the metal piece is that can be seen looking throught the plug hole in the second pic. I thought it strange that they have a wire going to the plug assembly thing, any ideas on that. I feel the need to fully understand the system before I can be confident in redesigning it. I've been contemplating cutting the top open removing the paper element and plastic welding it shut seems plausible and simple if one knew how to weld plastic. I believe the housing is made of nylon plasic Link to comment Share on other sites More sharing options...
covertrussian Posted September 2, 2014 Share Posted September 2, 2014 That 3rd line has to be some kind of emissions vapor line. Don't all car's still use a charcoal canister? If memory serves me correctly any foreign vapor will end up back in the tank vs the atmosphere. Not in this case, the third line is for the jet pump fuel feed, which tees into the fuel return (from fuel rail) and drains into the plastic fuel pump tub. Charcoal canister has a different line, that feeds fuel vapors from tank to it, and then the vapors/fuel from charcoal canister gets sucked into the turbo inlet. From what I can tell, maybe Subaru might have wanted to feed the fuel in parallel instead of in serial. Otherwise I don't see why they would have not just molded it shut from the get go. Any thoughts on what the metal piece is that can be seen looking throught the plug hole in the second pic. I thought it strange that they have a wire going to the plug assembly thing, any ideas on that. I feel the need to fully understand the system before I can be confident in redesigning it. I've been contemplating cutting the top open removing the paper element and plastic welding it shut seems plausible and simple if one knew how to weld plastic. I believe the housing is made of nylon plasic Here is the metal from the inside, it looks like it pushes against the plastic plug and against the filter. I thought it was there to push the filter down, but it was so flimsy I removed it (in picture I posted earlier) http://i160.photobucket.com/albums/t188/covertrussian/Cars/05%20LGT/Engine/General/Fuel%20Pump/CIMG1377.jpg~original It is nylon, also it looks to be glued/and melted shut the way it is. I don't think you will be able to really put it back together unless you cut it with a saw. 05 LGT 16G 14psi 290whp/30mpg (SOLD) 12 OBP Stock 130whp/27mpg@87 Oct 00 G20t GT28r 10psi 250whp/36mpg 22 Ascent STOCK Link to comment Share on other sites More sharing options...
covertrussian Posted September 2, 2014 Share Posted September 2, 2014 I had the bright idea of looking up other cars that use DW65c 9-652-1008, and low and behold we have the Pontiac GTO. Turns out they have a pretty much identical setup to what we have. GM part number 92146684, Full post http://i156.photobucket.com/albums/t37/24UGTOinFL/Fuel%20System/IMAG0211.jpg http://i156.photobucket.com/albums/t37/24UGTOinFL/Fuel%20System/IMAG0212.jpg From what I'm reading GM switched to this design a while ago on their trucks. Looks like Subaru decided to get in on that action. This now explains on why there is a secondary connection that is not used by us... 05 LGT 16G 14psi 290whp/30mpg (SOLD) 12 OBP Stock 130whp/27mpg@87 Oct 00 G20t GT28r 10psi 250whp/36mpg 22 Ascent STOCK Link to comment Share on other sites More sharing options...
elgin.owens Posted September 3, 2014 Author Share Posted September 3, 2014 Nice work man! I wonder if the Chevy guys already have a bypass method or if any of them would be interested in finding one. I've been researching plastic welding... I think the most promising method is to carefully cut the top of the filter section open, remove the element and plastic weld the top closed again. Then I gotta figure out a way to pressure test it once it's welded closed again... Link to comment Share on other sites More sharing options...
covertrussian Posted September 10, 2014 Share Posted September 10, 2014 Preparing to go on with the intake filter bypass, added an inline engine bay filter. http://i160.photobucket.com/albums/t188/covertrussian/Cars/05%20LGT/Engine/General/Fuel%20Filter/CIMG1495.jpg 05 LGT 16G 14psi 290whp/30mpg (SOLD) 12 OBP Stock 130whp/27mpg@87 Oct 00 G20t GT28r 10psi 250whp/36mpg 22 Ascent STOCK Link to comment Share on other sites More sharing options...
moral hazard Posted September 11, 2014 Share Posted September 11, 2014 Couldn't just use a hot soldering iron to melt the plastic shut? Anyway good work on the progress. Please keep pics coming and possibly a write-up. Link to comment Share on other sites More sharing options...
covertrussian Posted September 11, 2014 Share Posted September 11, 2014 My plastic was in pieces by the time I was done prying it. I have some ides, just don't have the time to fix it yet. 05 LGT 16G 14psi 290whp/30mpg (SOLD) 12 OBP Stock 130whp/27mpg@87 Oct 00 G20t GT28r 10psi 250whp/36mpg 22 Ascent STOCK Link to comment Share on other sites More sharing options...
covertrussian Posted April 22, 2015 Share Posted April 22, 2015 My intank bypass is done and has been working fine for few weeks now, see this thread: How to: Convert Intank Fuel Filter (05+ LGT/OBX 08+ WRX/STI) to Engine Bay Filter 05 LGT 16G 14psi 290whp/30mpg (SOLD) 12 OBP Stock 130whp/27mpg@87 Oct 00 G20t GT28r 10psi 250whp/36mpg 22 Ascent STOCK Link to comment Share on other sites More sharing options...
elgin.owens Posted April 22, 2015 Author Share Posted April 22, 2015 Nice work CovertRussian you're the BEST!! Thanks for taking the time to figure this out, write the tutorial and update this thread with the link! I really appreciate your hard work and dedication on this project! Link to comment Share on other sites More sharing options...
utc_pyro Posted February 13, 2017 Share Posted February 13, 2017 I had the bright idea of looking up other cars that use DW65c 9-652-1008, and low and behold we have the Pontiac GTO. Turns out they have a pretty much identical setup to what we have. GM part number 92146684, Full post http://i156.photobucket.com/albums/t37/24UGTOinFL/Fuel%20System/IMAG0211.jpg http://i156.photobucket.com/albums/t37/24UGTOinFL/Fuel%20System/IMAG0212.jpg From what I'm reading GM switched to this design a while ago on their trucks. Looks like Subaru decided to get in on that action. This now explains on why there is a secondary connection that is not used by us... Bumping an old thread, but this might come in handy for someone. The GM/ACdelco filter DOES NOT fit without major modifications. The pump connect, the hoses connect, but the mounts to the rods are just a bit off. First off the spring seat is 30mm high vs 5mm on the Subaru housing so must be cut down. Second the spacing is slightly different for the rods, so you'd have to drill them out for clearance. It can be made to work in an emergency, but the extra cost of the Subaru one is worth it. Link to comment Share on other sites More sharing options...
covertrussian Posted February 14, 2017 Share Posted February 14, 2017 That's for the update, that's good to know! I've seen some Subaru filters go for around $55 on ebay every now and then. I still like being able to pay $10 per filter though, but that of course didn't come without lots of work. Even then the line I'm using is not sealing perfectly inside the tank . 05 LGT 16G 14psi 290whp/30mpg (SOLD) 12 OBP Stock 130whp/27mpg@87 Oct 00 G20t GT28r 10psi 250whp/36mpg 22 Ascent STOCK Link to comment Share on other sites More sharing options...
mjtct Posted November 12, 2020 Share Posted November 12, 2020 Fuel Filter install 07 Spec B engine bay. The return goes under the filter. Still didnt fix my stumble. Link to comment Share on other sites More sharing options...
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