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Old 08-18-2008, 11:21 AM   #1
Turn in Concepts
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Default The TiC project SVX

Step 1. Obtain SVX. This example happens to be a Brilliant Red 1995 with just over 42,000 original miles on it. It's the L trim level with the active safety package which gives us AWD and ABS.

Step 2. Install 2008 STi wheels and tires because we had them sitting around. Ideally a lower profile tire would be nice, but we'll play with these for a few days first.

Step 3. We'll get it up in the air and go over everything.

Step 4. Will most likely look at bushings to start, brakes are HIGH on the list, and we think we may have a solution for the rear bar.

Step 5. Springs and dampers. Calculations have already been done for spring rates, now we get to figure out the whole damper thing (some history input would help here if someone knows what bolts in, and what the gotchas are).

Oh, and here's some pics:



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Old 08-18-2008, 12:32 PM   #2
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Sweet! My friend rob would love a swaybar solution!
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Old 08-18-2008, 12:35 PM   #3
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that things screams for a KITT light in the front grill area..
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Old 08-18-2008, 02:07 PM   #4
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Quote:
Originally Posted by tom@kartboy View Post
that things screams for a KITT light in the front grill area..
It would way better than that fugly Knight Rider wanna-be mustang
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Old 08-18-2008, 02:08 PM   #5
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Cool ride! I have always loved those cars.


Quote:
Originally Posted by Rippen Griffen View Post
It would way better than that fugly Knight Rider wanna-be mustang
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Old 08-18-2008, 01:57 PM   #6
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Wow, great condition. I can tell this is going to be awesome!
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Old 08-18-2008, 02:59 PM   #7
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So did the shop next to you do your sign out front or did you have someone else do it?
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Old 08-18-2008, 04:17 PM   #8
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Quote:
Originally Posted by Unabomber View Post
So did the shop next to you do your sign out front or did you have someone else do it?
We kinda had to have the neighbors do it. Good neighbor thing and all....
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Old 08-18-2008, 03:29 PM   #9
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Sick! I've always wanted a SVX for a DD, this is going to be a cool project, looking forward to the upcoming changes!

Surprisingly the 08 wheels look pretty good on that beauty
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Old 08-18-2008, 08:39 PM   #10
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"gotcha" Front swaybar is mounted dirrectly to the front struttower brace. I know it sucks for finding a coilover solution on the ease. People are doing it though. Here have a look over here for more info on the car and solutions that other people have come up with. www.subaru-svx.net I'm keeping my 94 LSi pretty low key as all my money goes to the Impreza for a long while. Brakes actually handle VERY well. a few small upgrades of better rotars and good pads with SS lines is all you really need. Best thing you can do now is drop weight. 4455lb curbweight. Good luck though.
-Gaddis
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Old 08-19-2008, 07:43 AM   #11
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Quote:
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4455lb curbweight
That must be a mistake.
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Old 08-19-2008, 03:38 PM   #12
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Quote:
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That must be a mistake.
3,580 lbs


Everytime I look at these pics it looks better. And it already looked great to begin with.
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Old 08-20-2008, 10:59 AM   #13
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Quote:
Originally Posted by em99sport View Post
That must be a mistake.
Probably the Gross Vehicle Weight.

Duncan
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Old 08-20-2008, 09:46 PM   #14
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Quote:
Originally Posted by dunk View Post
Probably the Gross Vehicle Weight.

Duncan
Correct. Around 600lbs of load can mean very little room for non-skinny friends. Still hauls once it's moving though. I gotta get an accurate weight on mine as it stands to get more accurate G-Tech readings. With 4455 plugged in and a skinny friend in the car I get 16.29 second 1/4. Yeah "slow" but as stated weight reduction will do wonders.
-Gaddis
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Old 08-19-2008, 07:50 PM   #15
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Interesting...I guess everyone is building these things now! One of the techs at my work has a green SVX with 2008 Tribeca wheels & a 5-speed swap.

Keep us updated!
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Old 08-20-2008, 01:48 AM   #16
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Nice car
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Old 08-21-2008, 12:42 PM   #17
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Koni Yellows are the insert most everyone goes with... dropping weight (specifically the back and center) off the car will really make the thing come alive. you guys should enjoy building this, there are a handful of other fun little mods you can do, ie. the rear spacer mod that actually work really well.
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Old 08-21-2008, 12:49 PM   #18
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Quote:
Originally Posted by curly2k3 View Post
Koni Yellows are the insert most everyone goes with... dropping weight (specifically the back and center) off the car will really make the thing come alive. you guys should enjoy building this, there are a handful of other fun little mods you can do, ie. the rear spacer mod that actually work really well.
yeah - I'm starting to think yellow inserts may be the way to go. I've already calculated ideal spring rates, but I need to plug in the damper numbers to see how much damping it needs.

I just can't find anyone willing to modify a current coilover design for these.

I am not familiar with the spacer mod. I'll have to look it up.

I have a bunch of bushings that arrived yesterday that I believe will work nicely on it.

We also took measurements for the rear bar yesterday. We think that one may actually be pretty easy to pull off.
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Old 08-21-2008, 04:07 PM   #19
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Awesome thread...I would love to tinker with one of these someday, hopefully this thread will become a great source for info.
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Old 08-21-2008, 11:08 PM   #20
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So yesterday and today we got some time to get in up in the air.

Yesterday was new belts, get a lay of the land, and take some measurements.

Things we know -
  • STi adjustable lateral links will fit in terms of length. I need to check the bore sizes for the bolts, but given the lego-ness of Scoobies I suspect they will work just fine.
  • The 2008 STi rear bar will not fit (not wide enough)
  • The LGT bar rear bar will not fit
  • The older LGT/Outback rear bar will not fit
  • Look at rear endlinks, and what will be required in order to go to an adjustable rear bar. Pretty darn sure an idea I have will work.
  • Emailed Whiteline to see if they have a bar that meets the dimensions we need.

Today was the following:
  • Brake fluid flush
  • Brakes still suck big time. Two foot stand on the whoa pedal will not induce ABS. While this may seem like a good thing that also tells me I'm not getting what I can out of the brakes.
  • BADLY need new rear rotors and pads. Pads and rotors for all 4 corners are on order. Been thinking about a brake project, and am waiting to hear back on some specs from a manufacturer
  • Bushings in the rear need some help. See below.

Bushings:
Fortunately we have the relationships with makers for a number of items. We also have a good bit of experience on new scoobies so we can eyeball quite a bit.

Rear rear diff mount bushings - look to be standard old style R160 bushings. SuperPro makes some and I just got some in. We'll press these in when we get time.

Lower rear trailing arm bushing - These look to be the same as others. We have some from SuperPro here that we can look into pressing in.

Upper rear trailing arm bushings - look to be like what we're used to, but don't have any here. SuperPro does make some though.

Lay of the land in the rear:
Forward rear subframe bushing:


Forward rear diff carrier/Outrigger:


Forward rear subframe and outrigger:


Forward rear diff carrier/Outrigger - looks to be very similar to the setup we're used to. Thus we pulled some Kartboy ones off the shelf. There are two versions - race and comfort. Since we already have some obscenely loud cars we opted for comfort.

There are 3 bushings in this kit - small-thick, big-thick, big-thin. The small-thick works great on the bottom, and the big-thin would work great on the top. Problem is since it's a stud we'd need to drop the carrier to get them on top. We just didn't have time to do that today. We'll do it later. Here's the pics:

Bushings in question:


Small-thick in place:


Back together with small-thick. Notice gap on top that would fit big-thin nicely:
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Old 08-21-2008, 11:32 PM   #21
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Rear subframe has 4 big bushings that attach it to the chassis. Noticed we had gaps there too. Need to fill those to get rid of the "jigglies" from the rear end.

Pulled the plate and low and behold those spots are perfect for the big-thick bushings that come in the other kit. Problem is there's only 2 in a kit, and we need 4. Not a problem is that Tom@Kartboy has released a kit for the 2008 Impreza that had just those 4 bushings to do the exact same thing. Given the softer nature of the 08 Impreza these are only available in comfort.

The rear subframe bushings are flat on top and mate right to the chassis so nothing goes up there.

Pic of a forward bushing with the lower plate moved out of the way:


The 4 bushings:


The big-thick bushing in its home:


Bushing in its home and buttoned up:


Rear bushining is the same arrangement, but the lower plate has an additional bolt. Here you can see big-thick in it's home and the plate pulled down:


A closer shot:


As for a kit - I will talk to Tom about putting an SVX specific pack together that has 2 small-thick, 2 big-thin, and 4 big-thick.

Overall impression so far:
  • Rear end is more responsive and feels better planted.
  • Jigglies are reduced
  • No increase in NVH that I can hear or feel. Will know tomorrow as we take it to the plant in IN.
  • REALLY need to do lateral links (or bushings) and trailing arm bushings

Other things in the works as of this point:
  • We know the spring rates we would like to target for GT class street car, and for street car that sees some motorsport.
  • We have opened conversation with some folks on good housings for Konis (this seems to be the best way to go at this point, but we'll ask AST about inserts).
  • BBK - I'm not letting this one die. I know there's a solution out there. I just need to work with the right brake company engineer to get it. I'm not interested in it from a stopping distance standpoint as much as I am for a larger/better heatsink standpoint. Afterall, this is a heavy car.
  • Rear bar - not letting this die either. We have some options here.
  • Front bar - in my opinion there's a very good option in Tom@Kartboy. We've been running his prototype rear bar on the 08 STi. It happens to have arms that attach with splines. We could mill the arm shape we need, spline the end of a thicker bar, heat treat it, get some bushings and go to town.
  • Roll center kit - I keep thinking about this. I think I can make something work with the Whiteline Evo kit (or something close) if I can make a new housing to hold the ball joint to the control arm. Outter tie rods may be a problem as they have a curve in them. The curve is there either for clearance of wheel/tire at full lock or to adjust ackermann. I need to check which.
  • Front camber plates - looks like the bolt pattern on the front camber plates is very similar as the rear camber plates on the 02-07 Impreza (just bigger). We have plates that that are close, but the slots run the wrong way (they would be caster plates). We can easily get new plates cut for this, and we'll do a backset of the slots to get more static caster out of them.
  • Front LCA bushings - Forward one I suspect Whiteline has something that will work with a new crush tube. We'll need to measure and check. Rear one - really not sure on that one. It'll take more work.
  • Motor mounts - have not looked at them closely yet. Need to pull one and measure. We may be able to work something out on those, but we'll have to see.
  • Seat rails - I'd like to sit lower in the car, but I need to pull a seat and see how they bolt up and take some measurements.
  • Steering wheel - I just got my newly recovered STi wheel from JPM. I opted for black, real suede with red baseball stitching. I need to pick up a spare wheel and see if they can recover it in a thin wrap of grey alcantara.
  • I have some power adder ideas, but those will have to wait.

Last edited by Turn in Concepts; 08-21-2008 at 11:38 PM.
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Old 08-25-2008, 08:38 PM   #22
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BBK: Really if you can just find one to reduce rotational mass via 2 peice rotors that'd be sweet but I think you have something wrong in your system. I'll try to remember to take a vid of me hard stopping. SS lines, dimpled slotted rotors, and good pads and I stop real nicely. I have notice the lack of ABS "kick" I was used to from my Impreza but have felt it.

Spring rate: To note check this http://www.subaru-svx.net/forum/showthread.php?t=45157 Also TomSVX on there is on NASIOC too and I think he user name is tom5spdsvx I'd take the time to ask him what he knows. Or check www.allwelldrive.net

Power Adders: Again ask Tom he's the only one making a real CAI option thanks to the twin throtle bodies. the rest is just general stuff like normal really. ECUtune.com for internals and ecu work. Exhaust everyone does different stuff, mostly custom one-ofs though.

Motor Mounts: People have been using modified Group-N mounts. Basicly shave to fit.

I can see you guys really want to find out a lot on your own but really please check in at www.subaru-svx.net Lots of people have invested lots of time and money into these for personal gains and share their findings. Just trying to help you to help us(SVX owners)
-Gaddis
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Old 08-25-2008, 10:49 PM   #23
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DMS (Drummond MotorSport) has a direct fit coilover for the SVX. You must call or email them in order to get the part numbers, etc.



Here's a baseline reading from mine. Just so you know what the engineers at Subaru were thinking when they built it...

If I can be of any assistance, let me know.
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Old 08-26-2008, 01:51 PM   #24
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I eagerly wait to see what you guys do with the SVX. I have been back and forth on buying one for almost 4 years now. Some of the issues you guys are addressing are the exact issues I had with the SVX aftermarket!
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Old 08-26-2008, 03:27 PM   #25
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Quote:
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I eagerly wait to see what you guys do with the SVX. I have been back and forth on buying one for almost 4 years now. Some of the issues you guys are addressing are the exact issues I had with the SVX aftermarket!
Right now we're going to focus on the non-power stuff. We'd like to see it handling like we think it should, and then we'll see about power.
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