I had a 923Z as you see in my old sig (need to update it). But I am picking up a 30th anniversary Z on June 11th. What are the main differences in the engines. I think I remember the opti being different and im pretty sure the computer is different. I tried using a scanmaster on my 93 and I think it only worked with 94-97. Any other things that I should know? Thanks

 

OBD II.

Dual cat exhaust.

Different pushrods.

Different interior (you probably saw that).

etc etc.

 

Thanks, I didnt know about the dual cat exhaust and the pushrods. Thanks for the info. I cant wait to pick it up.

 

The 93 was speed density as suppose to the later years all had maf's

 

Tail lights went to the 3-color ones in 97.
Differnt rims

 

93Z doesn't have a mass air sensor as does the 94-97.

 

Yeah the rims are white on the one im buying. Its the anniversary edition. White with the orange stripes. Seats are also white with 30th logo. I thought the tail lights changed in 98. Guess im wrong. I have to look at the pics of the car again. Thanks for all the replies.

 

Yup the lights are 3 color. Good call man. I didnt notice that at all.

 

differnt connecting rods
differnt fuel rail
differnt cast on the heads
opti

 

Different knock sensor, different coil.

 

Intake is different, the 93 doesnt have the fuel rail crossover in the front. The 93 if autop would also have the 4L60 no E its basicly a 700R4 with a 5 pin connector instead of 4 (differnt TC clutch activation) so if it were an auto it would also have a TV cable from the tranny to the T/B. But the longblocks are pretty well identical except for mild differences in the cam (opti drive and specs) and the afformentioned connecting rods and pushrods, the 93 has the skinny shanked rods whereas the 95 ups have the PM rods. The 93 had hardened pushrods.

 

Wow thanks for all the info. I never knew there was such a difference in the motors.

 

Timing cover and opti spark are different also. Not interchangeable unless switching vac fittings/ lines/opti spark etc....

 

http://www.speeddensity.org/modules....viewtopic&t=49

http://web.camaross.com/forums/showt...=specific+info

Good rundowns with the differences.

 

Great links. A ton of info. Thanks.