Would I be crazy to track my stock 135K mile Z?

mults

I say go for it. Mine is mostly stock, has original CSC, no oil cooler, original brake pads and such. I've tracked mine at least 3 times per each of the past 2 years with NO ILL EFFECTS. I run the car as hard as I can, and it has performed flawlessly.

Your CSC could fail at that high of a mileage, but so can one with 20,000 miles on it. I did have one incident of the clutch pedal going to the floor, but that was 3 years ago at the drag strip. Only happened that one time and then NEVER AGAIN. I may be pushing my luck, but I figure why worry about something before it happens. If and when a problem shows up, I'll take care of it then. Until that happens, drive it like it was intended to be driven...

A little video I shot at PittRace last season if you are interested.

https://www.youtube.com/watch?v=Wnk5ktFHUsU&t=661s

__________________
40th Anniversary 'Z', 312.06HP/260.58TQ (Dynosty EcuTek Tune)
Build Date/Number: 1/27/2010 #706
Berk HFC + CBE, R2C CAI, Clear Bra, Cleveland Z Club[/COLOR]