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Originally Posted by HADI-ZR1
o\hhooo come on!!! do you think the zr1 owner that such stupid to put the car on jack and rev. high speed???  ,  , i dont think anyone stupid zr1 owner do that !!!  , i saw stoc zr1 video clip ran 176mph!! so if this zr1 was little bit mod. ,it will easy hit 200mph !! |
Actually, it's not stupid at all.
The only stupidity, here, appears to be demonstrated by: 1) your lack of knowlege and 2) your inability to spell even simple words.
Reality is that the Service Manual suggests running the car on a lift or jack stands,
supported such that the halfshaft angles are reduced, as a testing/diagnosis method. Admittedly, the manual doesn't suggest running the car at such a high wheel speed but, provided the car is supported per the Service Manual, the tires are Z-rated and properly balanced and you don't have any driveline balance problems, running the car in sixth gear for a short period of time at 200mph shouldn't be a problem.
A "stoc" zr1 video clip showing a car at 176 mph is by no means out of the ordinary. I've seen many examples of that, along with still photos, over the years. Any stock ZR1, that's running properly (that means, not only the engine but the driveline, tires, alignment and the front air dam), given 3-4 miles of straight, flat, safe road, will make 180.
But 200?
Well...if you understood the physics involved, you'd not make such a statement which is, well....(to use your own words) "stupid".
What does it take to go 200 in a ZR-1?
1) More power (probably a lot more) than stock
2) Some slight aero mods to make the car more stable between 180 and 200 mph.
3) Optional might be an axle ratio change to put the engine higher in the rpm band in sixth gear.