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04-29-2013, 03:05 PM | #76 |
Scooby Specialist
Member#: 182375
Join Date: Jun 2008
Chapter/Region:
SWIC
Location: Northern Nevada
Vehicle:2013 Sti World Rally Blue |
I think you need to turn the center cartridge 180 degrees. Looks like the drain is facing up and the feed is on the bottom.
Edit, Sort of looks like that might have been how you had it the first time too? If so that could have been the cause for burning so much oil.
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04-29-2013, 07:19 PM | #77 | |
Scooby Newbie
Member#: 154534
Join Date: Jul 2007
Chapter/Region:
MAIC
Location: Richmond, VA
Vehicle:2018 WRX STI Limited Black |
Quote:
No, I believe it is correct. The top port was threaded as well as an option for a flange. I decided to go with the flanged top. The threads were BPST so I went with a flange instead. The bottom also has a flange with a barbed fitting for a 5/8" hose. I might have a better picture somewhere Ill look for. |
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05-01-2013, 08:21 PM | #78 |
Scooby Newbie
Member#: 204368
Join Date: Mar 2009
Location: Denver
Vehicle:07 wrx wagon black |
finally some one else who runs there fuel lines over the top of there manifold, just makes sense
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05-09-2013, 06:17 PM | #79 |
Scooby Newbie
Member#: 154534
Join Date: Jul 2007
Chapter/Region:
MAIC
Location: Richmond, VA
Vehicle:2018 WRX STI Limited Black |
I was bored today so I decided I would make a jig to make some merge collectors. Everything was made with left over metal.
I ended up modifying my design for some equal length headers and they required a couple of merge collectors to be made. I wanted them to be fairly accurate (Engineering OCD) so I made a jig. I will just let the pictures talk for themselves. I am very happy with how the jig turned out. Everything was CAD designed first since I had a couple of ideas but this seemed to be the best way to do it with my saw setup. Sorry for the LOADs of pictures but this might help someone out in the future trying to accomplish the same thing. |
05-10-2013, 08:06 AM | #80 |
Scooby Specialist
Member#: 94698
Join Date: Aug 2005
Chapter/Region:
Tri-State
Location: Easton, PA
Vehicle:2005 30R Wagon CGM |
Nice work! I love reading / viewing every step.
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05-10-2013, 12:57 PM | #81 |
Scooby Newbie
Member#: 319511
Join Date: May 2012
Chapter/Region:
TXIC
Location: McKinney, TX
Vehicle:2013 STI Sedan Ice Silver Metallic |
I think it is amazing that you are assembling your own motor. Wish I had the skills to do that!! Enjoying your build very much...I'm learning
Last edited by Scnsaracer; 05-11-2013 at 09:04 PM. |
05-11-2013, 09:30 PM | #82 |
Scooby Newbie
Member#: 154534
Join Date: Jul 2007
Chapter/Region:
MAIC
Location: Richmond, VA
Vehicle:2018 WRX STI Limited Black |
Thanks thanks, its been a bit of work but should be rewarding when its done.
So far it hasn't been that bad. If you have decent mechanical ability and can read a service manual and use the search function on here, you can pretty much find all of the information needed and then apply it to the build. |
05-11-2013, 09:33 PM | #83 |
Scooby Newbie
Member#: 154534
Join Date: Jul 2007
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MAIC
Location: Richmond, VA
Vehicle:2018 WRX STI Limited Black |
Started some of the fabrication for the parts I need. I ended up needing a refill on my argon tank so I could do some welding but haven't got around to it until now.
First is the coolant overflow tank. It is similar to the CAD design shown earlier in this thread except I added a slanted piece so it was more aesthetically pleasing. The second piece is the pie cut intake. I think the welds came out fairly well for not welding a lot in about a year. |
05-15-2013, 07:49 PM | #84 |
Scooby Newbie
Member#: 154534
Join Date: Jul 2007
Chapter/Region:
MAIC
Location: Richmond, VA
Vehicle:2018 WRX STI Limited Black |
What do you guys think about me trying an equal length something like this?
I really want something totally original in design when it comes to headers. I would like to do less welding and use less tubing if possible as well. I wonder how the above picture headers would function? This layout shows just the basic layout, then at the front it would do a 90 and I would make something to mate to an uppipe |
05-15-2013, 08:41 PM | #85 |
Scooby Specialist
Member#: 182375
Join Date: Jun 2008
Chapter/Region:
SWIC
Location: Northern Nevada
Vehicle:2013 Sti World Rally Blue |
You'd be mixing flows from cylinders paired incorrectly. So it may work fine in the manner that the stock one works fine. But it could be better in the same manner. That's why if you look at any equal length header on the market they pair the cylinders differently.
I think your best bet is to do one like the killerbee or like the Perrin or others like it. You could also use the Perrin or similar design for twin scroll if you wanted. |
05-16-2013, 12:05 PM | #86 | |
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Quote:
I agreed with your statement if I were building a twin scroll turbo setup. Makes complete sence. But since I'm still single scroll isn't the point to equalize the length to keep the pulses to travel the same length? Also to keep even EGTs for all the cylinders? |
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05-16-2013, 01:26 PM | #87 |
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The firing order on these is 1,3,2,4. So if you pair left cylinders together and right cylinders together you get exhaust pulses at each collector like fire fire wait wait fire fire wait wait. If you collect cylinders 1 and 2 together and 3 and 4 together you space the pulses at each collector evenly. That makes the pulses at each collector look like fire wait fire wait. You get pulses that travel the same length and have the same time gap between them before the next cylinder fires. I don't design these things but that's the general idea. There are other design considerations like length of the primaries, and diameter of the piping. Those can be changed to target different rpm ranges or for broader less focused gains etc. The intake manifolds are the same way. There are books written on the subject that may be more helpful than I am. Suffice to say its not generally as simple as just welding the piping if you're looking for real gains. You need to have the design correct also.
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05-16-2013, 03:04 PM | #88 |
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MAIC
Location: Richmond, VA
Vehicle:2018 WRX STI Limited Black |
Ahh the time between the firing based on the firing order makes a lot of sence with why to pair which cylinders together.
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05-16-2013, 03:27 PM | #89 |
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Member#: 103232
Join Date: Dec 2005
Chapter/Region:
Tri-State
Location: GTX3576R 05GD, GTX3076R'd FXT
Vehicle:GTX 3071R'd 11WRX PPG,4.44,LSD,E85,6spdx3 |
Amazing work, Your even sort of local but not really!
Fozzy Power! Ian, |
05-17-2013, 12:00 AM | #90 | |
Scooby Newbie
Member#: 154534
Join Date: Jul 2007
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MAIC
Location: Richmond, VA
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Quote:
I plan on putting the motor back in tomorrow. I'm hoping to have it started by Saturday. Still have to go over my base map and make sure everything is where I want it for the break in. |
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05-17-2013, 11:52 AM | #91 |
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Member#: 103232
Join Date: Dec 2005
Chapter/Region:
Tri-State
Location: GTX3576R 05GD, GTX3076R'd FXT
Vehicle:GTX 3071R'd 11WRX PPG,4.44,LSD,E85,6spdx3 |
Nice! yeah we arent exactly local too each other haha. Built fozzys are sort of few and far between around here. Im in Edison NJ, I drive through the scranton area alot when headed to upstate ny to visit family and work on scoobs.
Ian, |
05-18-2013, 08:42 PM | #92 | |
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Quote:
Haha good ol scranton. Well the good news is I have the motor in and dialed down the idle fairly decent on RomRaider. Bad news is I have a coolant leak on the water pump where I taped and threaded one of the ports and plugged it. So I am going to have to drain the coolant, remove the rad, timing belt, and pump and weld up the ports. Such a disappointment. Sneak peak of the wheels. Anyways, what do you guys think, powder the intake white or leave it raw/polished. Power would be free just think it kind of looks cool raw. |
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05-20-2013, 08:00 AM | #93 |
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South East
Location: WV
Vehicle:2011 Impreza WRX 5dr LRP |
looks great!
but, i gotta say, with your headers, i wouldnt put too much faith in what anyone says.. however, my thoughts are this- the oem unequal length headers are what makes it suond like fire fire, wait wait, fire fire. now regardless of how your cylendars are paired, they are still equal length. now, if you couldnt hear 2&4 at all, it would sound like that (fire fire, wait wait, fire fire) but when both sides of your headers meet up, the story changes. they would mesh perfectly. you seem intelligent enough to grasp that. again, dont take what people on here say for the gospel. (including myself) edit: i like your idea for the headers alot & see/like what youre doing- max flow/min tubing. to get rid of as much lag as possible. |
05-20-2013, 09:32 AM | #94 | |
Scooby Newbie
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Quote:
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05-20-2013, 09:35 AM | #95 |
Scooby Newbie
Member#: 154534
Join Date: Jul 2007
Chapter/Region:
MAIC
Location: Richmond, VA
Vehicle:2018 WRX STI Limited Black |
I also fixed the coolant leak on the water pump. Just pulled the npt plugs and welded em shut. No more leaks that I can see right now.
Drove the car around, pretty shakey, still dialing in the injectors/maf. Its been getting much better just have to do some more logging and adjusting. I have to say, idle with these 1400cc injectors is rock solid. I have my idle set at 900 for right now since I was using modified stock side feeds and the idled like crap. I might try to drop it down a little bit when I get the car running somewhat smoother. |
05-29-2013, 06:48 PM | #96 |
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In for more updates. I can't want to get my Borg installed.
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05-29-2013, 10:28 PM | #97 |
Scooby Newbie
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I should have some more updates sometime next week
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05-30-2013, 03:52 PM | #98 |
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TXIC
Location: Clemmons, NC
Vehicle:2002 WRX Wagon Silver |
subscribed
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06-02-2013, 10:25 PM | #99 |
Scooby Newbie
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06-09-2013, 02:53 PM | #100 |
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Join Date: Jul 2007
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I decided to make a new down pipe because my old one rerouted the wastegate. I ended up making one and letting the wastegate vent to atomosphere. Unfortunately I only took one picture of the weld on the vband flange.
Seemed to tig weld find eventhough it was aluminized steel. I did start to prototype the header. Here are some pictures made out of sch40 1-1/2" PVC. The final product will be out of sch40 mild steel. Should be pretty beefy. I will spend some more time with the cutting and making sure everything is perfect. This one I just did quickly to see how it will come together. |
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