rearends
Registered User
Joined: Mar 2002
Posts: 646
Re: rearends
Take a look at this site ... www.geocities.com/z_design_studio/ they list
what has what . It might not be totally accurate. I will see if I can find pics of
each type rear end and post them.
<P ID="edit"><FONT class="small"><EM>Edited by spudz on 09/16/02 09:30 PM.</EM></FONT></P>
what has what . It might not be totally accurate. I will see if I can find pics of
each type rear end and post them.
<P ID="edit"><FONT class="small"><EM>Edited by spudz on 09/16/02 09:30 PM.</EM></FONT></P>
The Evil Twin
Joined: Mar 2001
Posts: 9,297
From: Seattle, WA
Re: rearends
I think that Spudz is right, that Z Design studio is not accurate on what has a R180 or R200. The gear ratios seem a litte off too. The 280zx never had a 3.36 in the US.
From what I know, I would say that both manual and automatics 1979 280zxs come stock with an R180 3.54 rear end. Then in 1981 They changed to the R200 3.9 rear. But you never know if your car has had parts swapped out.
From what I know, I would say that both manual and automatics 1979 280zxs come stock with an R180 3.54 rear end. Then in 1981 They changed to the R200 3.9 rear. But you never know if your car has had parts swapped out.
Guest
Posts: n/a
Re: rearends
i've got a bit of an addition to this question. the last owner of my 260Z put in an r200 but i don't know what ratio it is. are there any markings on it on the outside that i can find, or some other easy way, or do i have to open it up and look at the markings on the gears to determine the ratio?
Externally Wastegated
Joined: Oct 2001
Posts: 1,220
From: San Diego
Re: rearends
A/T ZXT's have a 3.54 rearend that's a R200. Not sure of any other models. I thought the non turbo ZX's had an R180 with a 3.70 or 3.90 rearend. The 200's came in the turbo with a 3.70 right? Or maybe I'm just mistaken.
82ZXT
82ZXT
The Evil Twin
Joined: Mar 2001
Posts: 9,297
From: Seattle, WA
Re: rearends
Ok, looks like some of what I said was right. The 1979 comes with many different options. It may depend on what country of North America the car was sold in. But here is a web page I found. I looked it over and it seems to be pretty accurate from what I have learned, so I would trust all the content to be correct.
http://www.zhome.com/ZCMnL/tech/GearRatios.html
If you don't know the gear ratio of your car, you can do a test to find out what it is. Jack up one side of the rear and leave the other rear wheel on the ground. Make sure the car is in neutral. Position the wheel that is in the air at a certain point. Example: put the air valve close to the front or back edge of the fender. Mark a spot on the driveshaft with some whiteout or white paint so it is easy to see. Then turn the wheel around exactly one turn. The driveshaft should turn 3.5, 3.9, or maybe 4.1 times. If you can't see the mark on the final turn, then your R200 is probbly a 3.54. If it almost makes the final turn then it is a 3.9 (not quite four revolutions) but if it looks like it just made the four revolution or just past it, then its a 4.11:1 rear end.
http://www.zhome.com/ZCMnL/tech/GearRatios.html
If you don't know the gear ratio of your car, you can do a test to find out what it is. Jack up one side of the rear and leave the other rear wheel on the ground. Make sure the car is in neutral. Position the wheel that is in the air at a certain point. Example: put the air valve close to the front or back edge of the fender. Mark a spot on the driveshaft with some whiteout or white paint so it is easy to see. Then turn the wheel around exactly one turn. The driveshaft should turn 3.5, 3.9, or maybe 4.1 times. If you can't see the mark on the final turn, then your R200 is probbly a 3.54. If it almost makes the final turn then it is a 3.9 (not quite four revolutions) but if it looks like it just made the four revolution or just past it, then its a 4.11:1 rear end.
Guest
Posts: n/a
Re: rearends
The R180 look smaller or slimmer than the R200. The number either 180 or 200 refers to the size of the pinion. The 82-83 had a 3.90 gear ratio, you probably have the 3.54 or 3.60. I dont have a book in front of me to recall which it was.
