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Old 07-08-2018, 11:53 PM   #1976
gti_speed
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Quote:
Originally Posted by Zefy View Post
Just for fun question, if you remove the subframe spacers from a forester like you've done, does that move you out of sm? Does that not mean you're relocating suspension pickup points?
I would say it falls under 16.0

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O. Any minor modification, intended to allow or facilitate any allowed modification, is permitted as long as it does not provide any intrinsic performance benefit in and of itself, does not provide a weight reduction of more than 1.0 lb., and is not explicitly prohibited elsewhere within these rules.
This rule is intended to allow minor notching, bending, clearancing, grinding; the drilling of holes; affixing, relocating, or strengthening of brackets; removal of small parts, and similar operations performed in order
to facilitate the installation of allowed parts or modifications. Minor strengthening, without relocation, of original chassis/suspension pickup points is allowed. Examples include welding washers restricting control arm mounting bolt movement, local reinforcement of control arm chassis mounts, etc.
Competitors are strongly cautioned to make the minimum amount of modification required to affix a given part and to not make unduly tortured interpretations of this rule. Modifications to the firewall in order to allow for increased engine setback, and any modification that changes the location of a suspension pickup point, are explicitly forbidden. Plastic under-trays and covers below the vehicle may be removed or modified as necessary to facilitate other compliant modifications, but not added or enlarged.
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Old 07-09-2018, 01:21 AM   #1977
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Front subframes are open provided the pick up point doesn't move. Removing spacers would move the location for the suspension pick up points. However, we're talking about a Forester here so no one is going to actually protest you.

I'd guess the lack of camber is something got missed/flipped/moved during the arm install that caused it. A bend in an arm big enough to make that sort of change would be visible while eyeballing it.

Keeping the inside rear on the ground is usually not the fastest way to make a Subaru go around corners in AutoX when you have aftermarket diffs. On anything resembling a gear type rear diff and rules that don't allow a change, then keeping the rear on the ground is faster to a point.
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Old 07-09-2018, 02:16 PM   #1978
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Quote:
Originally Posted by motorbykemike View Post
yep , got one just like it
So helpful


The suretrac isn't adjustable is it? I thought the suretrac was a cam/pawl design and they switched to the torsen in the 05+ cars for increased longevity. It certainly wouldn't be as easy as a plated diff, I guess
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Old 07-12-2018, 09:08 PM   #1979
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Originally Posted by subydude View Post
Front subframes are open provided the pick up point doesn't move. Removing spacers would move the location for the suspension pick up points. However, we're talking about a Forester here so no one is going to actually protest you.

I'd guess the lack of camber is something got missed/flipped/moved during the arm install that caused it. A bend in an arm big enough to make that sort of change would be visible while eyeballing it.

Keeping the inside rear on the ground is usually not the fastest way to make a Subaru go around corners in AutoX when you have aftermarket diffs. On anything resembling a gear type rear diff and rules that don't allow a change, then keeping the rear on the ground is faster to a point.
I went down the “keep the inside rear on the ground” rabbit hole on my STU car. Ultimately got it to be pretty decent like that but I don’t know that it was any faster than it was when it was picking the inside rear up. Yeah, it didn’t hop and do funky stuff on corner exit but it was compromised in other ways (wasn’t quite as good transitionally). If I was doing it again, I’d put a diff in the rear and run a different class.
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Old 07-19-2018, 01:56 AM   #1980
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Well that escalated quickly...

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Old 07-19-2018, 10:35 AM   #1981
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Which turbo?
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Old 07-19-2018, 02:47 PM   #1982
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Can't say yet... Also only have a few miles on it and was stuck in traffic and cars were approaching way too quickly. The speed is blinding and I still need to wrap my head around it.

All I can remember is it felt a touch laggy and then boom you get punched in the nuts with torque and then it just pulls and pulls and pulls.
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Old 07-19-2018, 02:56 PM   #1983
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Quote:
Originally Posted by gti_speed View Post
Can't say yet... Also only have a few miles on it and was stuck in traffic and cars were approaching way too quickly. The speed is blinding and I still need to wrap my head around it.

All I can remember is it felt a touch laggy and then boom you get punched in the nuts with torque and then it just pulls and pulls and pulls.
Sounds like every garrett based turbo out there (blouch line, 20g, etc).

I laughed at the can't say part.

Now imagine an extra 100 wtq 1,000 rpm sooner (if you had an EFR)
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Old 07-19-2018, 05:06 PM   #1984
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Quote:
Originally Posted by subydude View Post
Sounds like every garrett based turbo out there (blouch line, 20g, etc).

I laughed at the can't say part.

Now imagine an extra 100 wtq 1,000 rpm sooner (if you had an EFR)
With the 7163? That sounds like crazy talk lol!!!

It's literally not on the market anywhere yet. Still waiting on the go ahead to release info.
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Old 07-19-2018, 06:03 PM   #1985
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Quote:
Originally Posted by gti_speed View Post
With the 7163? That sounds like crazy talk lol!!!

It's literally not on the market anywhere yet. Still waiting on the go ahead to release info.
On the new setup I could do more if I used a 7163. Think well over 500 wtq for that turbo. The old setup is a single scroll 6758 and produced the numbers I quoted.

But yeah, that curve looks like a LOT of other turbos I've seen. I'm not poopooing it, just saying it's nothing new, especially on a DAVCS car.
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Old 07-19-2018, 10:50 PM   #1986
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That's crazy... Do you have graphs for your old vs new setup? I'd love to see them.
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Old 07-20-2018, 10:57 AM   #1987
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Quote:
Originally Posted by gti_speed View Post
That's crazy... Do you have graphs for your old vs new setup? I'd love to see them.
I'm still building the new setup since this is an off year for me, but the old one was standard CR pistons, single AVCS, and a 6758. New setup will be 9.5 pistons, DAVCS, and the same 6758 since I won't have the funds to do a 7163 just yet. Maybe next "winter" I'll fab up the stuff for a 7163. I'd still be limiting it to less than 550 wtq and 500 whp on E85.

I don't have a graph from the old setup sadly besides one from almost 3 years ago now, but whenever the new one comes together I can post that.
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Old 07-20-2018, 11:07 PM   #1988
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I'm having turbo curiosity over here
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Old 07-20-2018, 11:59 PM   #1989
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Ok, it's Friday night and they said I could talk haha.

New Setup
FP Blue BALL BEARING Xona Rotor (Ported Turbine Housing & Upgraded FAP Housing)
GrimmSpeed 38mm EWG
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Tial MV-S 38mm Wastegate
Speed Density
Cobb 4Bar MAP Sensor
ACT HD Clutch
ACT Streetlite Flywheel

Still on stock internals...
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Old 07-31-2018, 04:13 PM   #1990
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What do you guys run for helper/assist springs? I’m running JRZ RS Pro’s with 13k/11k rates and 4K assist springs in the rear. I want to try just helpers in the rear, or nothing.
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Old 07-31-2018, 04:32 PM   #1991
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No helpers here, just a little bit of preload.
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Old 07-31-2018, 05:08 PM   #1992
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I run zero rate springs just to keep things seated at full droop.
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Old 07-31-2018, 06:27 PM   #1993
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I'm using the helpers/tenders that came with my RCEs.
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Old 08-01-2018, 09:52 PM   #1994
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I run the originally provided helpers with my RS1's, as memory servers they have a very low preload like .8K. They are only in there to keep the springs seated at full droop
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Old 08-20-2018, 02:23 PM   #1995
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So I've had two autocross's on the new turbo setup. Definitely has some lag to it compared to the factory turbo but when the boost hits good lord it comes on heavy.

For reference I was about 2 seconds off Stranos pace in the C7GS in SSR this weekend. Data showed I had an easy .5sec that I blew in one section with a little too much rotation.

I've had some pretty rough pax finishes our past 2 events where earlier in the season I was consistently Top 10. The past two I've been in the 20's which are both post turbo install which leads me to believe I'm driving like **** (watching video my lines don't look terrible, def could be better), Hoosiers are falling off (the front maybe has 30 runs on them, just corded the rear this weekend on the outside) or the new turbo is way slower for AutoX, I think it ends up balancing itself out for the most part.

This was my best run, I know I'm slower in the last two sweepers before the finish slalom. I think I could have carried speed into the first uphill camber assisted sweeper too.


Last edited by gti_speed; 08-20-2018 at 04:06 PM.
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Old 08-25-2018, 01:23 PM   #1996
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Here is the result on my recent build on the new G25 turbo. Looks very promising, still need to test it on the track. I'll report back in a few weeks.
https://forums.nasioc.com/forums/sho...php?p=45759176
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Old 09-05-2018, 03:37 PM   #1997
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Quote:
Originally Posted by smoky View Post
Here is the result on my recent build on the new G25 turbo. Looks very promising, still need to test it on the track. I'll report back in a few weeks.
https://forums.nasioc.com/forums/sho...php?p=45759176
Looking forward to hearing about this! These new gen turbos are pretty impressive.
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Old 09-05-2018, 06:18 PM   #1998
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If you're not following already, Subydude is knocking on the trophy door.

http://sololive.scca.com/SM.php
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Old 09-05-2018, 10:16 PM   #1999
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Yeah, and not in the RS, which I knew was out for 'winter build'...

I see Mike is up there too. Lot's of Subies in there.
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Old 09-09-2018, 04:55 PM   #2000
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Yeah, I was in Ross's car. It has a few of my parts on it and it's getting there, but not the same as mine. My only goal was to trophy in it, so I'm happy that happened. Rain on day 1 made it more of an AWD show with Dallas making the right choice and going to A7's instead of wets. Stainback and I stayed on the wets and it hurt us a bit. Mike and Bill had a good showing as well and I think their car is coming along too. Next year should be a hoot with everyone upping their game. Just hoping for two dry days this time instead of drying conditions with me being first driver
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