GT3 Wing Adjustment – MK1 996 “Taco Wing”

Hi all,

So as I’m going to go with the SC kit this winter, I thought maybe more power requires more down force?  Ok I just needed an excuse to adjust my wing angle…  🙂

What you need to do is remove the allen key screws, two on both side, under the wing.  Then you pivot the wing up and mine had an allen key lock screw there in the flat position.  You remove that completely and move the mount bracket to the desired position.

I tried all the way up and didn’t like it so went with the middle adjustment.  Pictures of both are at the end so you can decide for yourselves…

Cheers
Aaron

2nd Gear Detent Upgrade – Prevent or Stop Pop-Out

So as I’m going to have the majority of my car apart this winter for the supercharger installation and various maintenance items… which may include an exhaust (fingers crossed), I decided to do some preventative upgrades.

Since there is already a very good DIY (need to be a forum member to see pics), I’ll just post the links to get all the information and where I purchased.

First the 6speed link that started it all:  http://www.6speedonline.com/forums/996-vendor-classifieds/201845-fs-2nd-gear-pop-out-diy-fix-cheap-insurance-2.html
The DIY link for the tranny in car:  http://www.renntrack.com/forums/showthread.php?1278-Detent-DIY
The eBay link for where I purchsed:  http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=160486815697#ht_652wt_941

Yay, more tasks to complete…

Cheers
Aaron

VF Supercharger Installation – Winter Project 2010/2011

Hi all,

I haven’t been up to much in this past year as I’ve been busy with family, work, and house project commitments…

I was also wondering what to do with my car, and I came to the conclusion to sell it and buy a slightly newer Turbo to get some better performance.  This conclusion was quickly dashed when I took a look at the market and Kelly Blue Book was stating $16,500 – $22,500 USD for a C2 of my year.  The Turbo’s I was looking at were $40,000 – $56,000 USD.

So, with that I’ve decided to keep the car and thus continue with the original plans on upgrades.  At the moment, the only two outstanding issues are exhaust and some more HP.  This may seem a little backwards, however, Vivid Racing did a special on their VF Supercharger kit that I’ve had my eyes on for some time now so I guess I’ll be getting my HP upgrade before my exhaust upgrade!  🙂

Thus, this is the first post of what I trust will be many as this is NOT an easy installation!!!

Cheers
Aaron

Suspension and Brake Upgrade – Alignment Settings

Hi all,

This is the result of my corner balance.  I’ll probably install GT3 lower front control arms or upper camber plates to get more to a -2 degree camber angle for slightly more aggressive track driving and to support track tires.

Cheers
Aaron

Suspension and Brake Upgrade – First Road Test

Well today was the day, after almost a full month, that I got my car back on the road…. first impressions, wow what a difference.

I took it to the guys at Scan Automotive and they did an amazing job at correcting my mistakes and getting the car setup just perfect.  It would have been better if I put in the front adjustable upper camber plates so they could have done it more the way they wanted so that may be a future upgrade I’ll be doing.

I’ll update this post later with all the specs on how the corner balance alignment was done and some new pictures of the car now that I can take it to a proper location.

Again, big shout out and thanks to James at Scan Automotive for doing such a great job finishing off this project and getting me on the road!

Cheers
Aaron

Brake and Suspension Work – Back on it’s wheels!

Hi all,

Just a quick post to show a few images after the wheels and brakes were done and the suspension was put in and I got it back on the ground… As you can tell the suspension needs to be setup for heights, etc and its going in next week for that… can’t wait to test drive it.

I like the results personally:

Cheers
Aaron

Turbo Brake Upgrade – Front Axle Piece Needed for ABS Pickup

Hi all,

Just wanted to post a quick picture of the piece that is needed from a busted front 996TT axle to have an ABS pickup that fits in the wheel carrier as the C2 one is too large.

——— EDIT ————

Finally got the ABS pickups I needed from a fellow 6speed member that had a Turbo that was converted to RWD and was going back to AWD.  Both have 48 teeth on them but the size difference is quite noticeable.  Here are some pictures, C2 on the left:

—————————-

Cheers
Aaron

Suspension Configuration Information

Hi all,

I found this information after much searching for GT3 ride height settings.  In looking at them, I’m going to go with ROW Sport to start as the car needs to be streetable and I’d like to save some of the life on the rear tires… it will be a starting point anyways.

As taken from:  http://www.lfsforum.net/showthread.php?t=4060
—————–

RoW Sport:

Front ride height: 138mm

Rear ride height: 148mm

(I don’t know how to convert the spring rates (front 170lbs/in rear 260lbs/in)to kN/m…

…so I guessed them)

Front spring rate: 60kN/m

Rear spring rate: 75kN/m

I don’t know the anti-rollbar stiffness but I know the ratio between front and rear – 0.436. (I calculated from it from the table 2) So, if the front stiffness is lets say 35kN/m the rear stiffness is 15.3kN/m.

You can calculate the damper values from the chart 9 and 10. I can’t…

Steering lock:

(911 GT2: ratio: 16.9:1, turns, lock-to-lock: 2.98)

So it’s nearly 32 degrees which is quite low actually…

LSD:

(Again from 911 GT2)

40% power, 60% coast

Camber:

Front -0.5 degrees

Rear -1.25 degrees

Toe-in:

Front ~0.1 degrees

Rear ~0.2 degrees

Tire pressure (for Boxter 17″ wheels):

Front 29psi ->2 bars

Rear 36psi->2.5bars

GT3:

Front ride height: 112mm

Rear ride height: 125mm

I don’t know the spring rates so I guessed:

Front 75kN/m

Rear 90kN/m

Both of them are very stiff but GT3 has very harsh ride I think..

Camber:

Front -1 degrees

Rear: -1.83 degrees

Tire pressure:

Front 32psi->2.2bars

Rear 39psi->2.7bars

Sources:

http://www.pca.org/panorama/sample_article_3.html

http://www.pca.org/tech/tech_qa_ques…-5762DAAB1EC6}

http://www.pca.org/tech/tech_qa_ques…-5BBD4A3E2B8B}

http://www.pca.org/tech/tech_qa_ques…-9BFB817DF141}

http://www.pca.org/tech/tech_qa_ques…-2351E45810E1}

http://www.automobilemag.com/reviews…rsche_911_gt2/

http://www.motorsportscenter.com/article_124.shtml

RoW Sport:

Front ride height: 138mm

Rear ride height: 148mm

(I don’t know how to convert the spring rates (front 170lbs/in rear 260lbs/in)to kN/m…

…so I guessed them)

Front spring rate: 60kN/m

Rear spring rate: 75kN/m

I don’t know the anti-rollbar stiffness but I know the ratio between front and rear – 0.436. (I calculated from it from the table 2) So, if the front stiffness is lets say 35kN/m the rear stiffness is 15.3kN/m.

You can calculate the damper values from the chart 9 and 10. I can’t…

Steering lock:

(911 GT2: ratio: 16.9:1, turns, lock-to-lock: 2.98)

So it’s nearly 32 degrees which is quite low actually…

LSD:

(Again from 911 GT2)

40% power, 60% coast

Camber:

Front -0.5 degrees

Rear -1.25 degrees

Toe-in:

Front ~0.1 degrees

Rear ~0.2 degrees

Tire pressure (for Boxter 17″ wheels):

Front 29psi ->2 bars

Rear 36psi->2.5bars

GT3:

Front ride height: 112mm

Rear ride height: 125mm

I don’t know the spring rates so I guessed:

Front 75kN/m

Rear 90kN/m

Both of them are very stiff but GT3 has very harsh ride I think..

Camber:

Front -1 degrees

Rear: -1.83 degrees

Tire pressure:

Front 32psi->2.2bars

Rear 39psi->2.7bars

Sources:

http://www.pca.org/panorama/sample_article_3.html

http://www.pca.org/tech/tech_qa_ques…-5762DAAB1EC6}

http://www.pca.org/tech/tech_qa_question.asp?id={769CCD21-3CD8-422B-851C-5BBD4A3E2B8B}

http://www.pca.org/tech/tech_qa_ques…-9BFB817DF141}

http://www.pca.org/tech/tech_qa_ques…-2351E45810E1}

http://www.automobilemag.com/reviews/used/coupes/0104_porsche_911_gt2/

http://www.motorsportscenter.com/article_124.shtml

Turbo Brake Upgrade – And Some Suspension Work Too…

Hi all,

So I finished the rear today and I can confirm that Turbo rotors and calipers are a direct bolt on.

I also installed the H&R coil overs, rear adjustable control arms, and GT3 toe links.  I then installed the GT2 adjustable sway bar with new bushings and the Agency Power sway bar links.  I put the settings to factory GT3 settings as I did with the fronts.  I’m also using 7mm H&R spacers on the rear for now and I have 15mm that I’ll be trying on the fronts.  These may all change though and I’ll update if I do.

I’m going to need to play with the ride height settings to get them probably to GT3 RS settings, but the majority of the fine tuning will be done during the alignment.  Here are a few pictures of the results:

Cheers
Aaron

Turbo Brake Upgrade – Some Mathematics..

Hi all,

So I have never been able to find documented proof of the weight changes, etc with this upgrade.  So I’m going to weigh all the parts that come off and go on as part of the project and I’ll also include the weight of other things I’ve done to see the total net increase or decrease from my modifications.

Turbo Brake Components and H&R Suspension

• Front Calipers with Pads – 10.5 lbs each
• Rear Calipers with Pads – 8.25 lbs each
• Wheel Carriers with hub and bearings – 21 lbs each
• Front Rotors – 22 lbs each
• Rear Rotors – 18.5 lbs each
• Front H&R Coil Overs with Turbo Camber Plates – 12 lbs each
• Rear H&R Coil Overs – 10.25 lbs each
• 19″ 997 C2S Wheels Front with 235/35/19 Tires – 43.5 lbs each
• 19″ 997 C2S Wheels Rear with 295/30/19 Tires – 56.5 lbs each

Stock Carrera 2 Components and Stock Suspension

• Front Calipers with Pads – 8.75 lbs each
• Rear Calipers with Pads – 6.5 lbs each
• Wheel Carriers with hub and bearings – 13.5 lbs each
• Front Rotors – 19 lbs each
• Rear Rotors – 14 lbs each
• Front Stock Strut – 11 lbs each
• Rear Stock Strut – 10 lbs each
• Stock 18″ Sport Design Wheels Front with 225/40/18  Tires – 42 lbs each
• Stock 18″ Sport Design Wheels Rear with 265/35/18 Tires – 50.5 lbs each

Interior

• Stock Sport Seats (removed) – 42 lbs each
• Euro GT3 Seats with Rails (added) – 28.6 lbs each
• Tequipment Roll Bar – 28 lbs

Conclusions

• Component Weight Prior:  434.5 lbs
• Component Weight Post:   461.6 lbs
• Total Gain/Loss:  +27.1 lbs

Weight gain per front corner: 109lbs (Post) –  94.25lbs  (Pre) = +14.75lbs
Weight gain per rear corner: 93.5lbs (Post) – 81lbs (Pre) = +12.5 lbs

Cheers
Aaron