I would look at several things. I would start by checking for vacuum leaks, such as intake gaskets, injector seals, vacuum hoses, etc. I would then check compression across all cylinders to make sure they are within @ 5-8 psi of each other. More than 10 psi difference could cause the engine to lag. The greater the loss of vacuum or compression, the more exaggerated loss of power gets. I would also check the ignition timing. It dont have to be off much for lack of performance. Good luck!
burnt valve. do a compression test.
If your talking about the 280ZX it's 135 hp.
According to the Datsun 280ZX Service Manual for 1979, the plug gap is: 1.0 to 1.1 mm (0.039 to 0.043)
on a Nissan 280zx from 1979 to 1981 everything on the entire car is the same even down to the body doors and hatch
I have a 1979 280zx also and just changed it it is located near the gas tank under the car in the passenger side
possibly your MAF sensor, fuel pump, ignition control module, so many more, I own one and these cars are very tempermental
It is outside of the fuel tank close to the rear passenger wheel. Can't miss the big silver/chrome tubular device sticking out with lines and wires coming off it.
Yes. For the most part all 1979-1983 280zx transmissions are pretty much the same, manual to manual and auto to auto. The turbo transmission from 81-83 however is a Borg Warner T-5 style toploader. Something tells me through experience is that they will bolt up to a non turbo motor, but the driveshafts and rear end will need to be changed. Also, be aware that the older Z's from 70-78 will bolt up, but the driveshafts would definitely need to be swapped, especially if you are putting a 4 speed into it for whatever reason.
215/50R15
Nissan ATF
4.5"
the largest round one they have. note- when putting a cold air intake on a z car, you need your MAF sensor rebuilt to take a cold air intake or even just an after market filter. the sensor's are really weird and don't last very long