Tada! Well part of it...





More at: http://emeraldapple.wordpress.com


Cheers
Aaron

 

Nice work.

 

Very cool! Any update on the performance numbers?

 

I'll only be able to post weight changes, should have the front numbers done tomorrow. The rears will have to wait until next week.

A

 

You do a lot of cool stuff to your car.

 

Thanks!

A

 

To conclude on the weight changes to the car with all the changes... http://emeraldapple.wordpress.com

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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 and Sub bar(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

 

Was it worth the weight gain? Did you have problems with your brakes in the past?

 

Not sure yet... have to wait for it to get its full alignment and then road test it to see how I like the changes.

There is a cool factor to having the larger rotors and calipers in the 19" wheels for sure. If there is no performance gain, or even degradation, then in that perspective it wasn't "worth it".

However, I won't know until I get it on the road. For an ~$1,800 investment, I'm not upset at all so far. Overall it's only a 27.1 lbs increase to the car and a lot of that was from the wheel change. Some of that can also be saved by removing the spare tire.

Now the unsprung weight increase is another story...

I'll update after my first road test.

Cheers
Aaron

 

Some pictures of the rear posted...

http://emeraldapple.wordpress.com/20...sion-work-too/

Cheers
Aaron

 

Do I understand this correctly...you spent $1,800 and ended up increasing unsprung weight by almost 15lbs per corner? If so, that's insane....

 

Yup, same as a Turbo weight.

Although, 6 pounds per corner rear and 1.5 per corner front was just from changing the wheels and tires to 19" alone. Coilovers also weigh more... depending on how you calculate unsprung weight, you may not include the change in coilover or wheels/tires itself.

If you look at it that way, just brakes and wheel carriers its:

- Front - 53.5lbs post - 41.25lbs pre = 12.25 front each
- Rear - 26.75lbs post - 20.5lbs pre = 6.25 rear each

I guess you could flame me for doing the "upgrade" but no one else has done it, or if they did they have never documented it. So at least the answer is yes it can be done, this is how it can be done, and this is the math result. The additional front weight bias might actually not be a bad thing in a C2...

Let's be honest... bigger rotors, bigger calipers, did anyone seriously think there would be a weight loss??


Cheers
Aaron

 

You'll gain less weight with 2 piece rotors... but you already dumped $1.8k to complete it...

Impressive effort but I'm not sure if I want to do the same. I'm also doing a Boxster base to S brake conversion but it'll be less work compare to this.

 

Yup, the two-piece is where I'll go when these rotors are done.

I still have a lot of used parts to sell and I'm assuming it will be close to a break-even project once I do. Or, at that point I may just save the money to go with upgraded rotors.


Cheers
Aaron