I hope my topic says it all.

 

The H/U disp. in the ft. window and the new E/B color. I think that is all. :cheers: oh and a lot more smiling faces with 405 hp :D :D


[Modified by RICK DANIEL, 11:30 PM 8/6/2001]

 

The rims are different too, but they might still look the same.

 

The rim look exactly the same. Maybe below the paint they would appear different. the HUD would only be obvious while driving, so the actual only thing different, outwardly is the badge.

Is the interior unchanged?

 

The wheels do look a little different. The spokes seem a bit thicker. Maybe someone will post a side by side of the '01 and '02 rims. :cool:

 

The 2002 Z06 has:

1) Tighter clearanced, Teflon coated pistons (to cure cold piston knock)
2) Redesigned rings (to cure excess oil burning under high RPMs)
3) Heavier clutch
4) Different intake box
5) Different valves (sodium filled hollow stems)
6) A new hotter cam
7) No pre-cats (ie, "pups")
8) New manufacturer of the wheels (I think they are lighter too)
9) HUD
10) '405 HP' badges (most important change :D )


[Modified by Pewter C5, 7:51 PM 8/7/2001]

 

11. Different spring weights in the rear.
12. Thicker front sway bar with metal end-links.
13. New brake pads.
14. 2 feet tighter turning radius.

-MyC5

 

15-Costs more....... :cry
16-More free flowing mufflers
17-difference in the rear shocks
:seeya :smash:

 

18 -- Removed air mass flow sensor screen for better flow.
19 -- Updated column lock mechanism ?? (we hope :D ).


[Modified by Pewter C5, 9:34 PM 8/9/2001]

 

The rims are actually heavier. They manufacture them differently because the mold was broken on the original design.

 

joe :cool:
Where in the heavens did you read that at????? The wheels being heavier? Are you telling us GM's supplier has broken the mold used on the early 2002's Z06s' and now they have came up with another,which in turn,is making the wheels heavier? What does a mold have to do with the wheel being made heavier? Curious my fella' Z06 friend......
:cheers: to ya'
Zman

 

The wheels are .44kg less per wheel.

 

2001 wheels are forged aluminum. The supplier could not produce enough for demand. Now Speedline is making a "Spun-Cast" weel. The Genereal claims 12# less in weight for all 4 sheels. The spun-cast technology makes a wheel as strong as the forged but can be produced to meet demand. The wheel is very strong....I wish they offered a polished version.

MyC5

 

No, the mold for the 2001's broke - thats why more Z06's were not produced last year. That is also why they switched manufacturing processes and went with the new wheel.

My dealer told me that the new rims were heavier, maybe they are, maybe he was feeding me BS.

 

I'll take some of whatever you are smoking. :rolleyes:

 

"any visual difference" Me in the drivers seat. :D :D :yesnod: :cheers:

 

This is an absolutely true statement and is common knowledge amongst Z06 owners. :rolleyes:

By the way, I found the correct weight difference. The new wheels are a combined total of 1.5 pounds lighter. From Hib's story -

The ’02 Z06 wheels are a tiny bit lighter and made by a different supplier using a new process but they carry over the "old" look. Speedline, the Italian company that does the magnesium wheels (RPO N73) to be discontinued at the end of this year, is the new supplier. Speedline is an industry leader in a manufacturing process called "cast-spun" and the new/old wheels are cast-spun aluminum alloy rather than the forged aluminum used in MY01.

The change in source and process was driven by 2001 Z06 production being restricted because of a wheel shortage. The conversion was planned and implemented under pressure from the shortage but it was impossible to ensure the change would come right at the model year break. Because GM was desperate for Z06 wheels, the decision was to keep the appearance consistent. That way, whenever the new/old wheel came available, the break-point would be transparent to the customer and there would be no problem with cataloging different wheel designs in the same model year. As it turned out, the switch will come at the model change.

Speedline’s cast-spun technology and the history of C5 wheel processes are interesting stories related to us by Dave Hill. "In 2000, we went with forged wheels. We wanted more toughness for potholes, underinflated tires or really hard driving where you might strike something hard enough to damage the rim and have an air loss. There could be gradual air loss due to rim damage with the old pressure-cast wheels we had in the beginning of the C5 lifetime.

"A forging offered a chance to make the wheel tougher, so when we made that appearance change in 2000, it was done with a forged wheel. It, also, gave us an opportunity to make an upgraded, polished wheel that was almost as shiny as chrome, was better looking than chrome and didn’t have all of the environmental problems chrome has. So, forged was the hot set-up in the 2000 model year.

"Basically, the center section (of the ’02 wheel) is a casting. They take that, spin it and work the material out to the rim so it’s more like a wrought wheel at the outer circumference. This technology gives the center section better shape flexibility–which we can use for styling reasons or to reduce mass–but on the rim, it gives you the a crystal structure having the toughness of a forged wheel without being an actual forging.

"We like this because we can get better throughput, which we need to be able to build more Z06es, and we’ve been able to take some mass out. A set of Z06 wheels is .7 kilos (1.5 lbs) lighter than 2001 forged wheels. That’s a tiny amount of mass, but it’s in the right direction. In 2002, the painted (base) wheels and the Z06 wheel will use this cast-spun technology. It really is the next, new technology that’s the best for making a Corvette wheel.


There are two big changes, here, you really can’t see: 1) a new front brake pad that offers better fade resistance and a slight improvement in decel and 2) the lightening in the spun-cast wheel. Image: Jim Fets/GMPT
Click Images for Larger View

"As for the appearance of the new wheel, the customer probably can’t tell. On the back side of the spokes there is some undercutting that makes the wheel lighter but you can’t easily see that. For all practical purposes, they’re interchangeable."





[Modified by joecooool, 3:46 PM 8/10/2001]