4 Corner Winter Project

[XfireZ51]

Thought I'd start a new thread since my other one has expanded beyond just new rubber. We're moving onto reducing rotational mass w lighter rotors, plus upgrading rear trailing arm mounts and tie rod brackets.


Had discussion w Pete on possibly massaging the cylinder heads some more, but our concensus was that motor feels pretty strong right now. Bang for the buck not as strong as maybe looking in other areas. With updating my Invos to
Mich SS, I started looking into the whole rotational mass thing. Seems that this is an area that would yield better results in terms of ROI. The Michelins will add a total of 10lbs over current tires. Also, the Z06 brakes are large w front rotors weighing in at 28lbs. ea./rears 20lbs. ea.
Been researching the alternative rotors and have found two that look up to the task. The preferred rotors by the Z06 crowd is the Coleman 2pc. rotors built by Performance AFX. These rotors weigh 17F/15R. They basically reduce rotating mass by 30lbs overall w 20lbs coming off the front end. Rule of thumb is 1lb ~1hp. On the dyno that should mean about an 8-10hp pickup since the front wheels aren't going anywhere.
However, the mitigating factor is that the new rear tires will be ADDING a total of 6lbs. The rear weight loss will net out at 4lbs. The net weight loss on the front after new tires will be 16lbs for an overall net weight reduction of 20lbs.
Pickup of 20hp to the wheels would be huge. Other benefits are quicker steering and shorter braking distances.

Rear Rotors(pic) are made to accommodate the Z06 eBrake. Side view is of front rotor.

[RussMcB]

Thanks. I look forward to following this thread.

[XfireZ51]

Holy Smoke! Just got the rotors. Woah! Pics to come. Fronts at 16lbs, rears 14.5.

[alnukem]

Hi.....question, do you have C6Z06 Brakes all around?

[XfireZ51]

Originally Posted by alnukem

Hi.....question, do you have C6Z06 Brakes all around?

Yes.

[Dynomite]

Originally Posted by XfireZ51

I started looking into the whole rotational mass thing. Seems that this is an area that would yield better results in terms of ROI.

I am thinking

The Winter Project

Originally Posted by alnukem

So.....a loss of 1lb makes the equivalent of 1hp gained? Or is this just in rotational weight?

Horsepower Losses from Angular Acceleration of Rotational Mass

[alnukem]

So.....a loss of 1lb makes the equivalent of 1hp gained? Or is this just in rotational weight? Sorry...........I was never the sharpest tool in the shed! Thanks.

[XfireZ51]

Originally Posted by alnukem

So.....a loss of 1lb makes the equivalent of 1hp gained? Or is this just in rotational weight? Sorry...........I was never the sharpest tool in the shed! Thanks.

Al,

I have searched other forums, other brands and there are several w threads on this subject. The results of the tests appear to indicate that level of return. As I posted elsewhere, other benefits include less sluggish steering and braking. The Z06 rotors are massive. Dropping 22+lbs on the front end and 12 on the back gotta help. We'll see how much.

http://highboostforum.com/forum/show...934#post167934

[alnukem]

Great stuff! Thanks for educating me. I know a lot of us have lightweight flywheels, but I don't think it's quite as "free lunch" as something like rotors, wheels or a driveshaft would be. Is there any other areas that would be "bang for a buck" improvements?

[efnfast]

Originally Posted by XfireZ51

Al,

I have searched other forums, other brands and there are several w threads on this subject. The results of the tests appear to indicate that level of return. As I posted elsewhere, other benefits include less sluggish steering and braking. The Z06 rotors are massive. Dropping 22+lbs on the front end and 12 on the back gotta help. We'll see how much.

http://highboostforum.com/forum/show...934#post167934

I remember mailing those rotors to you Dom. They were some heavy!