Initial Z Posted February 27, 2006 Share Posted February 27, 2006 I dont rember what it was but I heard the the 73 Z has some problem with its design. I am thinking of geting one and I just wanted to know if you guys know of any reason why a 70-72 would be any better than a 73? Thanks, nate Quote Link to comment Share on other sites More sharing options...
Guest ON3GO Posted February 27, 2006 Share Posted February 27, 2006 73 is just heavier then the 70-72's by a tad..... have slightly pushed out bumpers, and so on.. otherwise the same crap.. mike Quote Link to comment Share on other sites More sharing options...
Cal Poly Zmanaustin Posted February 27, 2006 Share Posted February 27, 2006 No real reason to shy away from the '73. Some late '73s had the Hitachi carbs that were imfamously bad. The '74 260Zs all had these. Nissan quickly jumped to fuel injection on the '75 280Z to address this. So if it has these you can easily swap to something else. The SU carbs are the good stock ones on the early Zs. I dont rember what it was but I heard the the 73 Z has some problem with its design. I am thinking of geting one and I just wanted to know if you guys know of any reason why a 70-72 would be any better than a 73?Thanks' date=' nate[/quote'] Quote Link to comment Share on other sites More sharing options...
Boobala Posted February 27, 2006 Share Posted February 27, 2006 The 73's have the flat-top Hitachi carburetors which have a tendency to vapor lock and/or run very rich. This is easily fixed by installing the earlier “round-top” SU carbs . They also have an (easily removed) Air-Pump (AKA Smog-Pump), a slightly different dash, and slightly different wiring. None of these cause any problems that I’m aware of. Otherwise they are pretty much identical to the earlier years. Quote Link to comment Share on other sites More sharing options...
gogriz91 Posted February 27, 2006 Share Posted February 27, 2006 5 mph bumpers as opposed to the 0 mph bumpers on earlier Z's, an intermittent switch on the wipers to add a few differences. Quote Link to comment Share on other sites More sharing options...
alexideways Posted February 27, 2006 Share Posted February 27, 2006 If you have a first half of 73 car, like mine, it has the small bumpers, do'nt know about the catbs though cause, mine had dgv 32/36 fitted when I bought it. After the second half of 73, they came with the bigger 260 style bumpers. The rest of the car is entirely the same. + The weight issue brought up by ON3GO, is due to those bumpers and the carbs to are heavier. Quote Link to comment Share on other sites More sharing options...
Initial Z Posted February 27, 2006 Author Share Posted February 27, 2006 Thanks guys I think that answers my question. I dont think I will have a problem with the carbs or the bumpers cuz I'm not planing on keeping it stock. Quote Link to comment Share on other sites More sharing options...
Boobala Posted February 27, 2006 Share Posted February 27, 2006 I'm 99% sure that the 5-mph bumpers were not introduced until late 1974 (260Z). Quote Link to comment Share on other sites More sharing options...
Dan Juday Posted February 27, 2006 Share Posted February 27, 2006 I'm 99% sure that the 5-mph bumpers were not introduced until late 1974 (260Z). Yes that's true. The '73 bumpers did stick out a little farther than the earlier 240s though. So, let's call them 1 mph bumpers. Quote Link to comment Share on other sites More sharing options...
zcarnut Posted February 27, 2006 Share Posted February 27, 2006 Dan is correct. The front bumper of the 1973 240Z was extended several inches forward with longer brackets to meet the then new front bumper impact speed of 2.5mph per the NHTSA MVSS 115 standard. There was no impact speed specified for a rear bumper in 1973, hence the 1973 240Z retained a similar rear bumper like that of the 1970-72 Z cars. The standard changed for the 1974 models to a 5mph impact speed rating for both front and rear bumpers. So, the early 260Z had to meet this spec and it used the thin bumpers similar to the early cars but the bumpers were mounted to the body with the gas-assisted shocks. The late 260Z used the large 280Z style bumpers. Quote Link to comment Share on other sites More sharing options...
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