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UNYSOC.ORG - Upstate NY Subaru Owners Club

June 28, 2017, 01:21:07 AM

Recent Posts

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1
Motorsports / Re: 2017 NEHA Schedule
« Last post by deadlydave on June 26, 2017, 11:14:12 AM »
STi trunk is off an 07, WRX trunk is off an 04. I like driving with the WRX trunk but I think the car looks better with the  STi trunk so I'm going to leave it this way till after Washington. The STi trunk is in rough shape and rattles around a lot or I would just leave it on all the time. I don't notice a difference between the two while driving. I read years ago that the STi wing doesn't become 100% effective until 120+ mph and we don't hit that in a climb so I usually rock the regular wing to dave weight!

Ah, gotcha.  I'd always heard that the STI wing isn't designed to generate any downforce, but to reduce/combat lift.  I've seen some rather amusing videos of the wing vibrating like a guitar spring at high speed, so have no idea what the truth of the matter is.
2
Motorsports / Re: 2017 NEHA Schedule
« Last post by Turbaru on June 25, 2017, 05:26:44 PM »
STi trunk is off an 07, WRX trunk is off an 04. I like driving with the WRX trunk but I think the car looks better with the  STi trunk so I'm going to leave it this way till after Washington. The STi trunk is in rough shape and rattles around a lot or I would just leave it on all the time. I don't notice a difference between the two while driving. I read years ago that the STi wing doesn't become 100% effective until 120+ mph and we don't hit that in a climb so I usually rock the regular wing to dave weight!
3
Member 'For Sale' Classifieds / Re: 2006 LGT Spec B Wheels and Tires
« Last post by forester01k on June 23, 2017, 08:06:42 AM »
$450 if picked up this weekend
4
Meets / Re: Since we're talking about Charity
« Last post by Kavik on June 22, 2017, 04:02:44 PM »
Ha! Awesome

I considered giving you shit for not posting a pic sooner, but it somehow seemed inappropriate to push  :crazy2:

Cute kid though, she really rocks the look  :mrgreen:
Good luck to her on her continual remission
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Meets / Re: Since we're talking about Charity
« Last post by BenjiJosef on June 22, 2017, 01:59:41 PM »


Completely forgot to post this. Me and this little dude raised over $3,000. No Big Deal. Thanks for the support.
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Motorsports / Re: 2017 NEHA Schedule
« Last post by deadlydave on June 22, 2017, 10:21:55 AM »


Damn, close one!  Do you swap your trunk or wing from event to event?
7
Suspension, Brakes, Wheels, and Tires / Re: Too firm = worse handling?
« Last post by BlackParis on June 21, 2017, 09:26:34 PM »
Bilstien HD are intended and valued for stock height,
Bilstien sports are intended for slight lowering (not in excess of 2 inches in most applications)

Your Fronts are struts... ? What are your rears? Trailing arms? I believe?

I know mr2 rear koni inserts are a shorter stroke replacement on my front strut inserts on the Supra.

So inversely, if you wanted a little more rear travel  to help compensate for bumps, you could put the mk2 Supra inserts inside your mr2 cases with a little lengthening. This would help keep you off the bump stops, which is most likely your problem. You are probably much too soft for being lowered. 168/222 would be an evenly balanced wheel rate for the weight of your car. So depending where on the control/trailing arm your spring mounts, that what determines your effective wheel rates. The rear if trailing arm, could very easily be at a ~70% effective rate and that's why such a higher rate is required.

my recommendations.

removing more bumpstop, and perhaps trying different dampners (konis sports/yellows)

or just getting rid of all of it and going for a full adjustable coilover something in the 350-300 wheel rate range.. and getting the car corner weighted

FYI 2600lb rally cars on dirt typically aim for a 200ish wheel rate which is about where you are at... so you certainly aren't too stiff...
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Suspension, Brakes, Wheels, and Tires / Re: Too firm = worse handling?
« Last post by madlife on June 21, 2017, 04:32:39 PM »
TRD Springs  {Current}
Aprox. 1" lower riding height {Than the 93 springs}
Front spring rate 168 lb/in
Rear spring rate 308 lb/in

Stock {My car is a 92, but a ton of suspension bits have been swapped over to the 93+.  There were a bunch of changes to help reduce "Snap oversteer"}
1991 Turbo
F: 130lb/in. linear
R: 209lb/in. linear

1993 (don't know whether NA or Turbo, is there a difference?)
F: 130lb/in. linear
R: 210lb/in. linear


Reference:  with some other spring rates for reference = http://www.mr2oc.com/61-3sgte-turbo/191464-stock-spring-rates.html#post1977902

_____________________________________________________________________

Weight lets just say is 2750 given my cars "mutt" status.
43%F  57%R

____________________________________________________________________
9
Suspension, Brakes, Wheels, and Tires / Re: Too firm = worse handling?
« Last post by madlife on June 21, 2017, 03:59:27 PM »
A dampers job is to controll oscilations of the vehicle.  A miss match of spring and damper can lead to undesirable characteristics like harshness

To really understand whats going on with your car.  Id look at curb weight, weight distribution, stock spring ratres.  Then calculate motion ratios and wheel rate frequencies.  Then you can re do the calculations with your current spring rates and analyse results

let me know if you want help

That sounds pretty greek to me! I didn't know you can mathematically determine this.    let me dig up the info on this and I'll post it up tonight.
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Suspension, Brakes, Wheels, and Tires / Re: Too firm = worse handling?
« Last post by stylesrex on June 21, 2017, 11:58:03 AM »
A dampers job is to controll oscilations of the vehicle.  A miss match of spring and damper can lead to undesirable characteristics like harshness

To really understand whats going on with your car.  Id look at curb weight, weight distribution, stock spring ratres.  Then calculate motion ratios and wheel rate frequencies.  Then you can re do the calculations with your current spring rates and analyse results

let me know if you want help
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