[QUOTE=sunrise089,Feb 27 2006, 11:38 AM] I'm 99% sure you're wrong anyway, but I'll try to remember and check back later in the day. This issue is really difficult though, because it's almost impossible to find a Z to test this on. The 300zx is governed from the factory to well below its drag limited top speed. Many TT z32s have the governor removed when they add an aftermarket ECU, normally as the third common mod done to a TT (intake+exhaust+ECU = 100hp gain at the flywheel). Unfortunately for our purposes the ECU also adjusts the engine's timing as well, resulting in a power gain, as well as the gain supplied by the included boost jets.

 

Raced a fairlady 300zx at the strips and we were dead even, it was TT and had i/e plus a bunch of other mods. Stock turbo with just add ons and bolt ons, I thought they were faster than that? Must be the driver, who knows... Oh and yes it's a manual...

 

Actually a MN6 equipped C5 is capable of a higher top speed.

http://videos.streetfire.net/search/corvet...ACD4F173C86.htm

A M12 equipped C5(Z06) has a lower top speed of 179mph I believe. They are both aerodynamically limited. With enough power, the stock 6th gear can go well above 200mph.

 

Yes, I am aware they are gear capable of going faster (and capable of going faster with mods), but a stock M6 C5 Vette hits slightly higher than 170 MPH top speed (drag / power limited, see link below). Heck, my Stealth is gear capable of doing 240MPH (if it had enough power to get there). The video you posted was a C5 with mods. Also keep in mind that the speedo is prone to error at that high of a speed (not sure if this top speed run was done with a GPS or not).

http://www.conceptcarz.com/vehicle/z251/default.aspx

 

depending on driver, they usually get anywhere from 5.2-6 seconds 0-60, and anywhere from 13.8-14.5 in the 1/4 - so basically its like an S. with a good driver, high 13s, with an average to not so good driver low to mid 14s.

plus they stopped making them in 95 or so, so even the newest ones are 11 years old.
-Chris

 

170mph can be done if ECU and engine mods are added to include turbo upgrades and better fuel delivery. As far as factory internals and just an ECU upgrade, I'm not sure.

I will say this.

The VG30DETT is a great engine to make power with and it is common place to see one pushing 400whp with no work on the block itself i.e.
rods, piston, and so on.

One of my favorite cars ever!

 

Yes, 170MPH can most definitely be done with minimal modifications (ECU, exhaust, downpipe, intake, etc), because the ECU includes boost jets that raise the boost, increasing the power output of the engine. 330-350RWHP is common with just these modifications at 15psi. I was arguing that a 100% completely stock 300ZX TT, with the limiter removed (no increase in boost), could not hit 170 (I believe the stock limiter is set at 153). My guess would be more along the lines of 160MPH (which is a big difference from 170MPH).

By the way, does anyone in the Saint Louis area with an S2K want to do some friendly runs (with my mostly stock Z)? Should be a close race.

 

[QUOTE=95rtturbo,Feb 28 2006, 06:11 AM] Yes, 170MPH can most definitely be done with minimal modifications (ECU, exhaust, downpipe, intake, etc), because the ECU includes boost jets that raise the boost, increasing the power output of the engine.

 

 

I've raced a 300zx before but not in my s2k or M3, I was in my 1995 twin turbo 3000gt so yea......

the engines on those things are soo complex