View Full Version : 510 rear suspension conversion

01-10-2005, 08:47 PM
I was wondering if anyone has tried using a240z rear crossmember and suspension in a 510? Any websites? Any other conversions you guys seen?

01-11-2005, 01:03 AM
You ever LOOKED under the rear of a 240z?

01-11-2005, 02:30 AM
Yeah, I was wondering if the 240z crossmember is a similar width. The rear diff bar is easily modified. If that could be achieved the strut upper mount on the rear strut can be easily modified. Then cv axle and rear disc brake conversion would be easier. I will do some measurements at the junkyard when i go.

01-11-2005, 03:47 AM
are you talking about a 280zx rear suspension? The ones with a rear trailing arm? You can swap over those trailing arms to the 510 and adapt coilovers. Thats what I did. Or you can get the turbo zx trailing arms that have cv shafts on them and use the 280zx r200 diff. That would be an easier option rather than using the 240z's rear suspension

01-11-2005, 04:08 AM
Wow! Cool. So what parts do I exactly use? Stock 510 rear crossmember, 280zx trailing arms? Is there any modification to the driveshaft? cv axle length?

01-11-2005, 02:07 PM
use the rear trailing arms off of a 280zx. They should bolt up to the stock k-member. I'm still running the stock half shafts and r180 diff. Drive shaft mods will just depend on what tranny set up your running. If you plan to run a r200, then you need to modify the mustach bar. if you plan on lowering the car, you should modify the k-member as well to adjust for camber and toe. Also, watch out for clearances between chasis and trailing arm when lowering the car.

01-11-2005, 02:29 PM
"I'm still running the stock half shafts and r180 diff"

Ok, I was wondering when u said stock halfshafts and r180 diff. Do you mean you are running stock 510 axles and r180? Or do you mean you are running the stock cv axles that came in the 280zx with r180 diff? Do you know about the r200 with cv axles? How are the cv axle lengths ?

01-12-2005, 07:02 PM
im using non cv type shafts. 280zx's all came with r200's. Not sure about length of the cv shafts, but they look like a pretty close fit, but probably are longer then 510 half shafts

01-13-2005, 05:13 AM
"im using non cv type shafts. 280zx's all came with r200's. Not sure about length of the cv shafts, but they look like a pretty close fit, but probably are longer then 510 half shafts "

I know the r200 fits with the stock halfshafts. I know the 280zx, 200sx, and 1st gen 300zx have the same type of rear suspension as the 510, but will it bolt to the 510, or will it bolt to the stock rear crossmember? Too long of axles will have problems as will too short. What you brought up sounds really cool, but to things measure up? Have you tried it? I really want to know because I really really want cv axles in my 510 in the future.

01-13-2005, 09:17 AM
To get CV's you can use the stock 510 trailing arms. Also, the 280Zx arms are not a direct bolt-in to the 510 rear crossmember. Contact michael@spriso.com he knows intimate details of the 280ZX arms under a 510.

Dave lum
www.datsuns.com (http://www.datsuns.com)

01-13-2005, 01:20 PM
"Also, the 280Zx arms are not a direct bolt-in to the 510 rear crossmember"
I thought so. Sounded to good to be true. Well, gunna go the junkyard to make mearusrements this time.
Thanks man!

01-14-2005, 01:16 AM
as far as 280zx arm bolting on, they do bolt on to the stock crossmember of the 510. I've done it. I now have it bolted on to a "penultimate" type crossmember that is adjustable for camber and toe. You want to have an adjustable k-member because the 280zx arms will give you a little more toe in. Another person has done it as well, look in the forums of the510realm.com. You will also need to set up a coilovers on the back as well as there is no place to mount the stock springs. Also, cv shafts are not that hard to mount, you could just make an adapter to connect the shaft to the trailing arm side. Check this 510 out...
http://www.the510realm.com/modules.php?set_albumName=Bob-Esseltine-RWD_NissanMan&op=modload&name=gallery&file=index&i nclude=view_album.php&page=2

01-14-2005, 03:55 AM
I have gone to the junkyard today guys!! I measured the rear suspensin on the 280zx. It does bolt in!, BUT it was a 280zx with the same halfshafts as a 510! It was a 280zx without cv alxes. So I just took the stubaxles outta it. They are good fro r200 without cv axles. ANYWAYS, FOOMANCHO, I really hope you are right. Because screw everyone trying to charge a grip for cv axles custom. I really wanna put all my money down on u, but I hafta c and measure the cv axle 280zx myself.

01-14-2005, 03:08 PM
one issue when I put the 280zx arms on was clearance issues with the frame. Make sure you mock set up everything on before the final assembly, with your suspension setup fully compressed. I had to do some cutting on the frame because my setup would hit the frame while compressing. I guess it depends on how much you plan on lowering your car. Dont forget to make your rear crossmember adjustable also. If you just wanted an easy way to adapt cv shafts then modifying spindle flange to accept the shafts would be the easiest, as per the link I previously posted. That way you would still be able to use 510 trailing arms and suspension.

01-14-2005, 09:35 PM
Cool, thanks. I might pick that up at the junkyard.

03-25-2005, 08:37 AM
Please update us on your progress. I, too, want CV's for my 510, along with a stronger diff, maybe r200. If there are parts from a Z that will make this possible, I'll be on the hunt.

03-25-2005, 04:09 PM
I have gotten the parts, and it fits pretty good. The 280zx arms are around.5" shorter from inner mount to outter mount. I made it fit with a hammer for test fitting. I have not installed it, so the clearance of the arm hitting the frame has not come up yet, but if the 280zx arm hits at your height, why wouldn't the stock 510 arm hit at the height. Hmmm. Well, I gotta wait and see when I test fit it. The thing I was worried about was the clearance of the coilover I might run, and the frame/fenderwell. I have pics of it. E-mail me if you wanted to see them.

03-29-2005, 07:25 PM
"The 280zx arms are around.5" shorter from inner mount to outter mount"
Sorry, the 280zx arms bolt right into the 510 rear member. Sorry for the confusion. I was looking at the axle lengths compared to a stock 510 axle, and it looks like the right 280zx axle seems to be a bit too long. Have you guys ever bottomed out the axle? You guys know what axles to use?

04-14-2005, 08:44 AM
Are you guys having issues with the stock 510 stuff? Dont assume it wont work.
I have had no issues with the R160 diff and stock 510 rear suspension. R160's are incredibly stout and are much easier/cheaper to find in LSD.
I am runing a built SR20DET in my 510. I did fry a half-shaft U-joint, but that was due to lack of grease.
The 280zx rear suspension is not much (if any) better.
If you are after rear disc brakes, let me know.
Michael@spriso.com can tell you the details of the 280zx rear arm swap, but also ask him if he would ever do it again...I think I know his answer already...no!
I sell brackets for rear disc conversions on a 510. Much easier than swapping on 280zx stuff.

BUt if you are running a hi-torque super high output engine (like MR. Lum above) then you might be more in the ballpark for an R180. R200 is WAY overkill, and a big/heavy SOB.