Discussion in 'General Subaru Discussion' started by Eazy_E_Rich, Feb 1, 2015.
Nice shirt! Just add 24lbs. to each of the rear corners...problem solved!?
Lol, I'm not too worried about the understeer, all the boost far outweighs any concerns.
Here's the latest progress, cold side pipes complete.
Looks like I'll be making at least the start of a full exhaust before I get it fired up. Stay tuned...
What, no hood exits?
Fixed the small images ^
lol, all the cool kids are doing it!
I was going to do side exit at least to get it going but the fact that it could effect my tune(at least it would be on the rich side though) with outside air getting in makes me not want to mess around with it.
I was only kidding! (but all the cool kids are doing it tho)
Can’t wait for this thing to be rolling again!
I get the idea behind the one big H-Piped BOV, however would it be cleaner and more efficient to run one per bank?
Cleaner - probably, It would be one less merge to weld.
More efficient - probably, though I'm not an expert in fluid dynamics.
More expensive - without a doubt, I got the flange and BOV for free. Any quality BOV will run you about $200 these days.
It all comes back to goals for a given build. For this one in particular I'm on a budget, and I am not making a lot of boost so the H pipe should be of minimal concern. With all project cars the door is open for changing it up in the future, but this was my path of least resistance to get this thing moving again.
I wound up making custom downpipes because the hater pipes were going to be an issue for three reasons:
Outside Air could easily get to my O2 sensor, throwing off my tune.
I would have to scrap the hater pipes completely to go full exhaust
2G DSM O2 housing would not allow for full exhaust
These mandrel bends are not sharp enough to get it back under the car with the factory 2G DSM housing.
My solution was to start making the full exhaust and leave it just short enough to start the car and possibly drive it.
So I started with this ^
Around lunchtime I had this ^
Mounted up with O2 sensor in.
Sneaking out under the car. I will probably run it like this for a bit. I want to see how cool it sounds
Here are both mostly finished pipes pre-paint.
That's a sneak peak for a future episode. I posted the latest video today one post up if you've not seen it.
Nice work bruh!
Thanks Josh. Lots of work, I'm not the best fabricator but I prove over and over again that trying is at least 75% credit.
Such a monumental task, and you just keep plugging away! I admire your drive to see it through to the finish
That, and i’ve always wanted one(or a supercharged version)
Took my first stab at making braided lines with AN fittings last night. It went fairly well with the typical painfully stabbing my fingers with the cut braided line.
This is all for my oil cooler which runs from a filter sandwich adapter.
You can see that I opted to put the more 'murican fittings in the bottom of the next image.
Hoping for the first start with turbos in the next week or so and this was one more thing to check off the list. I'll probably try to actually mount the oil cooler tonight.
Hell of a build.
Now with free tune download.
Ultimate cliffhanger at the end there! Looking forward to the next episode
Maybe it’s another shop rag??
It was the hall sensor. They are not designed for more than 125C. This is the reason I didn't make it out to LaX...
Stupid hall sensors.
Just curious, any particular reason why you bothered installing cats, aside from being a law-abiding, environmental-caring, decent human being? Just seemed like a lot of extra hassle for you for something that's not completely necessary.
Looking forward to hearing her sing!
Great question Joe.
Cost wise my friend Jordan gave me them for free, they came from the factory with his C5 Corvette and I know they are capable of running 400hp without issue.
Daily driving involves taking my 3 year old to daycare so it's nice to not have that extra unburnt fuel smell. Thats pretty much it apart from the things you mentioned above!
She looks like a pretty good helper!
Yeah, as long as spongbob's not on!
Makes perfect sense! I figured there was a legitimate reason other than being a tree hugger
Time for an update. Hopefully this will get me motivated to finish a few videos I've got in the queue.
So I've been keeping my videos quite a bit behind but I'm going to do a batch update here. If you watch the videos in the future you'll get the full details.
With half the exhaust on the car I had been driving quite a bit and enjoying the glorious turbo sounds. The car had most of the problems of a recently driveable tuner car, but if managed properly this thing was a blast to drive.
I found out the limit of the 2002 WRX clutch was well below the capability of the Twin Turbo H6 (which I knew before hand, just choose to ignore). While I was planning to change the clutch I worked with a member in La Crosse (@JebusCrypes) and picked up a 3.70 2006 WRX 5MT for the Impreza. This made sense as the ratios are crazy short for this build, I could only get like 16 MPG on the highway.
I waited until after I took my car to a small local car meet to swap things out since it was so rare that my car could actually make it out of my garage.
Afterwords I pulled the transmission out and got to swapping in a new clutch.
Normally I would not run a puck style clutch on a street car but the Dude at ZF designs promised this carbon metallic does not chatter (more about this topic later).
I decided to pull the trans rather then the engine because having just got all my turbo fittings not leaking and in place this seemed like the quickest way. Took about 5 hours to do the job by myself. I was able to use a transmission jack which made it possible, but I still prefer pulling the engine. Lining up the bellhousing is very complicated by yourself from underneath with the engine in the car. Slighly lifting the engine with the hoist eventually helped, but still not ideal.
After getting the trans and clutch in the car seemed to be doing good. Breaking in the clutch I noticed the center diff was leaking, and after pulling it apart a few more times replacing the input shaft seals I suspect it may still be leaking. Time will tell on this one.
The car has a completely new feeling going from the 4.44 (shortest ratio 5MT) to the 3.70 (longest ratio 5MT). I used to have to shift right when I got into the power band, but now the car spools quicker with the load and you have time to feel the boost.
Here is a video of a pull I did from IG: https://www.instagram.com/p/Bosepe6H-qz/
I did also finish off the exhaust, check IG for pics of that or wait for the video.
Now for the real reason for all of my silence over the last few months.
I was hoping to make it to the LOL Track Night at DCTC and was doing some final tuning on the car. During a 3rd gear pull at about 5400 RPM I felt the car hesitate. Quickly getting off the throttle I saw the ECU had sync loss. This was frustrating since I spent another month eliminating this issue. Next time I stepped on the gas oil sprayed out the breathers which has never happened before. Obviously something was wrong and the above photo shows the results of the compression test.
After talking with Dom from getadomtune.com I learned that this sync loss was not the result of calibration, rather detonation caused the sync loss. Digging further I had based the boosted section of my timing map off a WRX map. Thinking this through my 10:1 Compression ratio engine was running far to much advance. The WRX is 8.5:1 and can handle more timing under these loads.
Carnage is minimal so luckily I'll be throwing a new piston in this thing hopefully this week.
I am thinking I'm near the limits of my tuning abilities and not wanting to run this experiment again I may consult JM Auto @jmyhre05 to see if this is something they could dial in.
For now I'll be trying to avoid the snow:
Bummer on the ringland issue Looks like you caught it early enough though that it didn't too do much damage beyond just a toast piston? Hoping it's a quick repair for you!
Are options pretty limited for forged internals for the EG33 platform? I've never really researched them much? Perhaps that's deeper than you want to tear into it right now though. Although now would be a good opportunity to make it a bit more bullet proof!
As for the snow...looks like we won't be avoiding it for much longer. 2" in the forecast for tonight down here
Yeah from what I see it's fairly spendy. $1300 for pistons alone. I've got an extra block so I can go that route someday, but it not in the cards right now.
I’d be interested to see this thing on the dyno at JMA!
You’ll have her back together in no time mang!
That really sucks. I hate seeing cars go down and that's all seems to be happening this year. Nice to see you caught it quickly and aren't giving up!!
Impromptu MNSubaru cruise/meeting?