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Old 05-24-2019, 07:39 AM   #26
ahmedhamdy
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Join Date: May 2019
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Old 05-27-2019, 08:47 AM   #27
GravyRobber
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Member#: 205568
Join Date: Mar 2009
Location: West TN
Vehicle:
2017 WRX STi
WRB

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Made some good progress this weekend. Still waiting for the new oil cooler (pretty unhappy about that ) but everything else is here and ready to install. I decided to go ahead and drop the engine in and install the oil cooler when it finally arrives. I had originally intended on re-using the original, but figured it was cheap insurance against contamination to just buy a new one. Though if it doesn't arrive soon, I'll likely flush out the old one as best I can and re-use it. The oil in the old oil pan doesn't appear to have any metal in it, so I'm probably being overly cautious about contamination.

Engine install went surprisingly smoothly considering: 1.) I did it solo, and 2.) This is my first engine ever to remove or install (I'm usually the guy standing around drinking beer while offering jokes and moral support). A few pics below:











Left on the list is to install the EWG, downpipe, intercooler, intake, TMIC, and battery.
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Old 06-01-2019, 06:34 PM   #28
GravyRobber
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2017 WRX STi
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I did the first start and ran the engine for a bit today, even drove around the block. Engine started right up with ease but had a pretty significant oil leak at the turbo feed line. Found the hose itself was actually damaged and was leaking, so I picked up another at a local shop. Leak is fixed and the car seems to run ok.

Currently, it is running extremely lean with AFR's very erratic. I believe it to be a vacuum leak somewhere, so I need to find that and address it.

While driving around the block, I got a CEL for multiple/random misfires, and one for RH exhaust cam slow to respond. I've done a little bit of research but am taking a break from it for now. I might try to track down the vacuum leak and address the lean condition tomorrow, but in the mean time I will reset the ECU and see if that cam CEL comes back after flushing and filling with new oil.
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Old 06-08-2019, 01:27 PM   #29
GravyRobber
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Location: West TN
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2017 WRX STi
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A bit of an update:

I was doing some trouble shooting and found my wideband to be the culprit of the erratic AFR's. I have attempted to re-ground it elsewhere but I still get random erratic readings. At other times, it seems to read very accurately. Will continue to work on that as I have time.

As for the other issues, I have been able to sort those out. I found the RH exhaust OCV leaking oil and I realized that I never properly re-torqued it after I removed it for cleaning when the engine was apart. So I pulled it out, cleaned it again, and re-installed. That seems to have cured all the misfire issues and AVCS issues. Datalogs look really good and seem to indicate everything operating normally.

Currently sitting at about 160 miles and the car seems to drive very reliably. I've tried to get some videos up of the first start and some idling, but my iPhone doesn't have the option to upload to YouTube anymore for some reason. No clue why.

Will continue to update this thread as I get it broken in and get some tuning done.





All cleaned up
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Old 06-08-2019, 02:00 PM   #30
gfxguy
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Join Date: Apr 2012
Chapter/Region: NWIC
Location: Seattle area
Vehicle:
2014 STI Hatch
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Nice work! Donít think Iíd have the guts to do all that myself.
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Old 06-08-2019, 03:15 PM   #31
GravyRobber
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Quote:
Originally Posted by gfxguy View Post
Nice work! Donít think Iíd have the guts to do all that myself.
Thanks! I didn't think I did, either. But I didn't have much of a choice since there aren't any shops around here that I trust. With a little help from a local road tuner/engine guy I was pleasantly surprised at the whole process. I've never pulled an engine myself, so it was a major first for me and a huge learning experience. I just followed the FSM as much as possible and it went pretty smoothly.
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Old 06-11-2019, 09:43 AM   #32
GravyRobber
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2017 WRX STi
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Up to about 320 miles on the new setup and still no hiccups. I definitely have the "'08+ Stumble" even with the stumble fix kit. I attribute that to larger FP and injectors. My tuner is hesitant to tune it until we rule out anything mechanical causing it. I've scheduled an appointment at a local shop tomorrow to smoke my intake and just verify that its not being caused by a vacuum or boost leak somewhere. Nothing else seems to indicate that, but its worth checking. In the meantime, I'll be doing plenty of stop and go driving as I continue the break in process.

One thing that is noticeable, but not surprising is the increased noise from the engine. I understand piston slap, but even warm, its louder. I think its the increased valve clearance (OEM was way too tight) combined with maybe some header noise from my Grimmspeed crosspipe and up-pipe. Not necessarily concerned about it, but just something I noticed. This is my first ever built engine so I'm probably overly cautious.
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Old 06-14-2019, 09:08 PM   #33
GravyRobber
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2017 WRX STi
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Up to just over 600 miles now and the break in process is going very well. My base/break-in map has been tweaked a couple times and is running really well. The temptation to stomp on it an hear the wastegate open is very real. I've scheduled a dyno for the second week of July, I can't wait for that. I'm excited to see what kind of numbers this setup will put down, but moreso, I'm looking forward to how it will feel in real world conditions, and if it will match my "OEM+" goals I've been shooting for.
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Old 06-14-2019, 09:22 PM   #34
MCalvert
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Join Date: Jun 2019
Location: Alberta, Edmonton
Vehicle:
2009 WRX STI
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Super sleek!!!
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