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02-22-2019, 01:11 AM | #51 |
Scooby Specialist
Member#: 468393
Join Date: May 2017
Location: PDX OREGON
Vehicle:2017 STI |
Lightweight flywheel is awesome.
I Added some decel fuel cut, 700 I think, and then I reduced requested torque 20% in the 0-6% accel position from 0-2000 rpms for theeeee perrrfect clutch engagememt setting. I also had to add 1.76* of timing in the cruise range to smooth things out.
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02-22-2019, 01:19 AM | #52 | |
Scooby Specialist
Member#: 435142
Join Date: Nov 2015
Chapter/Region:
MWSOC
Location: Commerce Twp, MI
Vehicle:2004 STi Java Black Pearl |
Quote:
Lol the GDs are 04-07, maybe I'll give them a call and see if I can get the up/downpipes. If not, I may try my luck with that up pipe and see where the turbo sits. I figure it's the same up pipe that came with the kit you have, since its just an IWG T3 rotated pipe. I was referring to the clutch setup. I always thought the XTSS was only good for about 550wtq |
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02-22-2019, 01:22 AM | #53 | |
Scooby Specialist
Member#: 435142
Join Date: Nov 2015
Chapter/Region:
MWSOC
Location: Commerce Twp, MI
Vehicle:2004 STi Java Black Pearl |
Quote:
What are you tuning with? Open source? |
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02-22-2019, 01:42 AM | #54 | |
Scooby Specialist
Member#: 468393
Join Date: May 2017
Location: PDX OREGON
Vehicle:2017 STI |
Quote:
I talked with them (ACT) and they swear there clutch specs are underrated. How much, I forget. If it slips though, I'll upgrade. Ya man... give them a call. They're great people to chat with. I was on cloud nine when I found out they had this kit. Despite the odd CHRA angles (and the fact it's so minor in the big picture) I really like the way it looks. It's propped up nice and high for display. It may sound petty, but, it's the little things sometimes. I will note that I've seen the garret t3 uppipe and it never has the support off the flange. The link you put up is the first time I've seen that uppipe designated as a garret. But ya.... phone call. |
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02-22-2019, 01:46 AM | #55 | |
Scooby Specialist
Member#: 468393
Join Date: May 2017
Location: PDX OREGON
Vehicle:2017 STI |
Quote:
The tweak to RT at idle - 2k rpms came to me when I identified the issue as the pedal being too torquey in that area. We have a subi imprezza hatch (base model) also and driving both back to back is what really made the issue stick out. All of a sudden it hit me - there's no resolution in the CObb OTS throttle maps down low. Six cells later and the it takes off smooth as butter. I was really having a hard time with takeoffs before the lightweight clutch but it was beginning to seriously piss me off after the lightweight fw. hahaha. |
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02-22-2019, 01:59 AM | #56 | ||
Scooby Specialist
Member#: 435142
Join Date: Nov 2015
Chapter/Region:
MWSOC
Location: Commerce Twp, MI
Vehicle:2004 STi Java Black Pearl |
Quote:
Quote:
I agree, its weird because the title says its for an EFR but in the description it says specifically for rotated Garetts... I'll get on the phone with them and see how much it'll run me-- or if they're even just sell me the exhaust components. Having a big ole turbo visible in a Subaru engine bay gives a nice recognizable feature to all those non-subaru inline guys who don't realize how clustered EJ platforms are I'm sure the pedal pressure between a base impreza and an XTSS is ridiculous, I can see why you'd do that lol. When I first saw this thread I was hoping you were sticking with your 7163 so that I could see before and after VDs of stock vs built heads. I've been contemplating upgrading the cams when I finally get around to putting the 7163 in, I just don't know that its worth it considering the 7163 is out of breath around 6750 anyway. Regardless, still looking forward to seeing some overlays of the 7163 and 7670. |
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02-25-2019, 05:31 AM | #57 | |
Scooby Specialist
Member#: 468393
Join Date: May 2017
Location: PDX OREGON
Vehicle:2017 STI |
Quote:
I had that motor on my cable hoist, ready to drop in with the stock 7163 and that very last minute --- I just couldn't do it. Really getting her dialed in now... so.. hoping to turn the power up in 30 days max. |
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02-25-2019, 05:44 AM | #58 |
Scooby Specialist
Member#: 468393
Join Date: May 2017
Location: PDX OREGON
Vehicle:2017 STI |
Well tonight I did the 500 mile oil change and a second (third if you count engine stand) set of leak down tests. I also did compression tests for the first time.
The engine threw me some weird numbers on the engine stand and that's why I was asking about it in the built motor section. So far the trend seems to be good, but, there's still a couple oddities. These are actual notes taken when I did the tests so excuse the lack of organization. I've talked to the builder about them each time except this latest set. I don't know what his deal is.... but... he didn't reply to text on a Sunday evening. The numbers that have me scratching my head on this latest test is the fact #3 went up, and #1 is almost too good to be true. But, it is. The gauge doesn't lie and the numbers were so low I did everything possible to get a higher number. There isn't one. I'm very interested to see what that number is next test, or, even better I'd love to see them all come down to that zone. Here are my notes with test results. I've now upped the rev limiter from 5500 to 6000 and continue to increase it's diet of boost. I just hope these leak down numbers level off. Before install/first start/on engine stand/no valve covers/- pistons set at TDC to the point where pressure would not rotate the assembly. Multiple tests done on each cylinder to ensure consistency. Cylinder # 1 15% ( leaking out of intake) 2 4% (WTF?) 3 22% (leaking out of intake) 4 37% (leaking out exhaust & Intake- tapped buckets lightly and retested @33% vales fully closed, all 4 valve buckets loose.. as they should be TDC. After break in- approx 200 miles warm motor, each test done 2x - around the block, then around again #1 8%@ 100 psi, 7%@ 75 psi #2 8% @ 100 psi, 8% @ 75 psi #3 7‰ @ 100 psi, 7%@ 75 psi #4- 14% @ 100 psi, 14% @ 75 psi -Leaks at rings 550 Miles Compression Test -hot/warm motor -each test performed 2x -10 cranks, WOT, fresh battery charge #1 137, 140 - av. 136 #2 132, 132 #3 140, 140 #4 130, 130 Leak Down Test - done after compression test - motor warm enough to heat up air hose at plug end, each test done 2x around the block then start over again. #1 2%@ 100 psi, 1%@ 75 psi (tested 2x ) #2 7%@ 100 psi, 7%@ 75 psi (tested 2x ) #3 10% @ 100 psi, 9% 75 psi (tested 2x ) #4 13%@ 100 psi, 12%@ 75 psi (tested 2x - 2nd was 15% @100 and 75psi) |
02-25-2019, 09:04 AM | #59 | |
Scooby Specialist
Member#: 435142
Join Date: Nov 2015
Chapter/Region:
MWSOC
Location: Commerce Twp, MI
Vehicle:2004 STi Java Black Pearl |
Quote:
Can’t wait to see some numbers on this. In my experience your latest compression/leakdown numbers seem pretty good for a built block, especially with cams |
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02-25-2019, 02:18 PM | #60 |
Scooby Specialist
Member#: 468393
Join Date: May 2017
Location: PDX OREGON
Vehicle:2017 STI |
I thought I was a great clutch operator ... lol. Something about the STI I could just never perfect. Although, I was only stock for about 3 days before putting a Cobb OTS map on it.
I hope the numbers even out, especially the leak down ones |
02-25-2019, 03:14 PM | #61 | |
Scooby Specialist
Member#: 435142
Join Date: Nov 2015
Chapter/Region:
MWSOC
Location: Commerce Twp, MI
Vehicle:2004 STi Java Black Pearl |
Quote:
It's interesting that it's the back two cylinders that have the most leak down. I bet you it's just the new valves. Were they pressure tested before going on? |
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02-25-2019, 03:15 PM | #62 | |
Scooby Specialist
Member#: 328635
Join Date: Aug 2012
Chapter/Region:
NWIC
Location: Portland*
Vehicle:2004 STi GTX3076R Rally Blue |
Quote:
I got one to test and I thought something was wrong when I installed it because the peddle felt stock. Switched from the ACT 6-puck. The organic disc's are good to 750wtq so never going to have an issue holding. |
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02-25-2019, 03:30 PM | #63 | |
Scooby Specialist
Member#: 435142
Join Date: Nov 2015
Chapter/Region:
MWSOC
Location: Commerce Twp, MI
Vehicle:2004 STi Java Black Pearl |
Quote:
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02-25-2019, 11:40 PM | #64 | |
Scooby Specialist
Member#: 468393
Join Date: May 2017
Location: PDX OREGON
Vehicle:2017 STI |
Quote:
So I'm assuming you kept your 'test' clutch? Did you buy it to test or what? Do explain please! I'm tired of leg cramps after every drive. A side from that I really like what the xdss and lightweight flywheel have done to the car compared to the sdss w/OEM flywheel. |
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02-25-2019, 11:47 PM | #65 | |
Scooby Specialist
Member#: 468393
Join Date: May 2017
Location: PDX OREGON
Vehicle:2017 STI |
Quote:
It didn't get much better on the sdss ACT setup. But, on this xdss the pedal engages the clutch as soon as it lifts off the floor, which is how I like my clutches. Forget about that damn hill assist. Good Lord! I was very happy I could turn that off. I'm not sure on the heads. I have to assume they were pressure tested during/after the machine work but, a side from that I don't know. I feel awkward drilling the builder on how he does things. I can feel air from the oil filler neck now, so, it's the rings that need to settle in as far as I can tell. |
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02-26-2019, 08:52 AM | #66 | |
Scooby Specialist
Member#: 328635
Join Date: Aug 2012
Chapter/Region:
NWIC
Location: Portland*
Vehicle:2004 STi GTX3076R Rally Blue |
Quote:
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02-26-2019, 01:29 PM | #67 | |
Scooby Specialist
Member#: 435142
Join Date: Nov 2015
Chapter/Region:
MWSOC
Location: Commerce Twp, MI
Vehicle:2004 STi Java Black Pearl |
Quote:
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02-28-2019, 04:37 AM | #68 |
Scooby Specialist
Member#: 468393
Join Date: May 2017
Location: PDX OREGON
Vehicle:2017 STI |
First VD numbers - rev limited at 6k still. Need to up it to 6500. Pretty pleased with the numbers since it's pump fuel and spring pressure.
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02-28-2019, 04:47 AM | #69 |
Scooby Specialist
Member#: 468393
Join Date: May 2017
Location: PDX OREGON
Vehicle:2017 STI |
Another pic of under the hood, and some horns that we re-arranged. Few things left under the hood, shaved manifold is on the way (I got lazy/busy and paid someone) and a couple of things to paint.
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02-28-2019, 09:56 AM | #70 |
Scooby Specialist
Member#: 435142
Join Date: Nov 2015
Chapter/Region:
MWSOC
Location: Commerce Twp, MI
Vehicle:2004 STi Java Black Pearl |
That’s crazy, seems like it’s spooling pretty close to your 7163, even with BC280s. Granted it’s lower boost, but still.. wow.
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02-28-2019, 10:34 AM | #71 |
Scooby Specialist
Member#: 328635
Join Date: Aug 2012
Chapter/Region:
NWIC
Location: Portland*
Vehicle:2004 STi GTX3076R Rally Blue |
3818lbs? DANG that thing needs a diet!!! LOL. And some RPM, I would be struggling to keep the rev's down. That the break-in recommendation?
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02-28-2019, 10:41 AM | #72 | |
Scooby Specialist
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Join Date: Nov 2007
Chapter/Region:
MWSOC
Location: Xona 78•64 UHF
Vehicle:2002 WRX V9 6mt R180 Brembos |
Quote:
4th gear makes turbos spool up a little faster tho, how's it coming on in 3rd? |
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02-28-2019, 06:07 PM | #73 | |
Scooby Specialist
Member#: 468393
Join Date: May 2017
Location: PDX OREGON
Vehicle:2017 STI |
Quote:
I'll do a 3rd pull if possible next time I'm out. |
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02-28-2019, 06:09 PM | #74 |
Scooby Specialist
Member#: 468393
Join Date: May 2017
Location: PDX OREGON
Vehicle:2017 STI |
LOL. That's full tank, and a 140 pound passenger. But ya, it's heavy. I've weighed it three times on the truck scales in Troutdale.
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02-28-2019, 06:48 PM | #75 |
Scooby Specialist
Member#: 328635
Join Date: Aug 2012
Chapter/Region:
NWIC
Location: Portland*
Vehicle:2004 STi GTX3076R Rally Blue |
Mine is down at 2838lbs full tank of fuel, my fatt-ars is another 200lbs but I am currently removing weight from my backside, lol. I use a set of corner scales I got years back for a track car I was running, they have paid themselves off several times over at this point.
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