240Z, 260Z, 280Z (S30) Forums Dedicated to first generation ZCars

diff between z and zx?

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Old 10-20-2002, 11:15 AM
  #3  
the Dude
 
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Join Date: Mar 2002
Location: Bay Area, California
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Re: diff between z and zx?

what kolts said.


<img src ="https://www.zdriver.com/rides/spec/pix/TurboMike_1022288550.jpg">





1st generation 240/260/280zs look like this (same body shape, difference in bumpers, taillights, and turn signals)



<img src="https://www.zdriver.com/rides/spec/pix/Tommy_1009828317.jpg"



mark 2 280ZX series. notice the difference in body overall

------------------------------
'73 240z
'99 neon R/T
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Old 10-21-2002, 08:24 AM
  #5  
The Evil Twin
 
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Re: diff between z and zx?

The horsepower did increase, but so did the weight of each model.
A 1975 280Z says that it has 170hp on the metal plate in the engine compartment while a 1981 280ZX says it has 145hp. The 1975 Z is claiming power at the crank while the 1981 tells you about what you have at the wheels.

With the change in names from a 240Z to 280ZX, the number refers to the size of the engine. A 240Z has a 2.4L engine while the 280Z and 280ZX have a 2.8L engine. So the larger engine has more torque too.

Comparing all the early Z-cars to each other in stock form, the 240Z is just a little faster than them all, except for a stock 280ZX turbo which is the fasted. I think the slowest one was a 260Z because of high emissions regulations here in the USA, that year (1974) had a bad carburetor and fuel system. That can easily be changed out to use a 240Z carburetor set.

The 280ZX came out with other options like power windows, power locks, power mirrors, T-tops from 1980 on, cruise control, and in 1983 they had an available digital dash. All those power options include electric motors and electric motors weigh a lot. So that's one thing that contributes to the 280ZX being the heaviest car out of the Datsun Z. Power steering has a pump that is driven off the engine, again taking away a little power.

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