Need some carrier (differential) dimensions

[mtcookson]

Looking to see if any of you happen to have a differential laying around that you can get some measurements from for me.

I need the length between the two mounting points on the front, center to center like in this picture:



Also, if you could get a rough measurement of the iron case front to back (front of the case where the pinion goes to the back where the aluminum cover bolts on) that would be awesome as well.

Many thanks

[evildky]

the 350z diff case is built completely different from all prior R200'sthis thread shows a lot of the detailed differenceshttp://forums.nicoclub.com/zerothread/345542

[mtcookson]

I've seen that picture and have no idea where it came from because that's most definitely not a 350Z differential. (looking at the picture name and doing some searching, that diff is actually from a Honda S2000)

One of our own members posted a writeup of how to install the Quaife differential into the 350Z base model (non-lsd) case and it is definitely similar to all of the previous R200's (minus the funky one stud setup on the rear case ):

[evildky]

yup, looks liek that pic is form a R50?

guess I didn't follow through with that thread here si the Z33 diff[img]http://i14.photobucket.com/albums/a338/tflock/350z.jpg[/url]

[evildky]

and I know the pinion gear is different from earlier R200's but is the flange end splining different as well?

[_b.jaye_]

yup, looks liek that pic is form a R50?

guess I didn't follow through with that thread here si the Z33 diff[img]http://i14.photobucket.com/albums/a338/tflock/350z.jpg[/url]

toolbar- "My boobs images,..."

[mtcookson]

and I know the pinion gear is different from earlier R200's but is the flange end splining different as well?

That part I'm not sure of. I actually don't want to swap gears if at all possible, I actually want to see if the front mount has the same spacing as the earlier R200's so that I could just bolt the differential right in. I'd have to change the rear cover as well, but I'm pretty sure those bolt patterns are the same. I need to get out to the garage to make sure.

What I like about the Z33 diff. is that they use the same 6 bolt flange for the CV's that the TTZ R230 and early Q45 R200 use, as least they look the same. I should probably get measurements for those too to be on the safe side.

That FAST illustration shows the flanges as being the triangle type ones which I've never seen on a 350Z yet.

[evildky]

good catch on the boobs

why are you wantting to run a Z33 diff? I assume this si for the VG30ET Z32? are you just wanting a lower ratio? they both use crappy vlsd's

[mtcookson]

I was wanting to run the Q45 diff. for the 3.538 ratio but the problem with it is the ABS sensor is on the pinion instead of each axle output. Also, because of that the nose is a bit longer.

By the pictures I've seen of the Z33 unit, if it does bolt in I believe I should be able to use the Z32 N/A driveshaft as well.

Going with the Z33 diff. also gives me the option of the 3.357 automatic differential, which I may go ahead and get (if it works) as it should work great with my power goals... and the turbo I just picked up.

Forgot one more thing, there are also quite a few aftermarket diff. options for the 350Z case as well.

[evildky]

going for a land speed record? why such a low ratio?

so you got tiny turbo that spools so fast you need the overdrive ratio to keep from spinning tires?

pictured can be decieving, the r20 and r230 short snouts looks basicallyt he same, and the mounting earls looks the same, but they are not interchangable

ABS is for little girls, loose it

the diff carriers available for the 350 afik also fit the older r200 cases that were originally equipped with vsld's (which only matters if you want to use the vlsd output shafts)

and custome driveshafts and adapters are fairly cheap when you aren't paying to overnite the parts

[mtcookson]

going for a land speed record? why such a low ratio?

so you got tiny turbo that spools so fast you need the overdrive ratio to keep from spinning tires?

Land speed record would be cool but mostly just optimizing my setup. Generally with a turbo vehicle the lower gearing makes the car quite a bit faster because the extra load it puts on the engine in each gear will get the turbo to spool up quicker, giving more power sooner. On top of that, once you start making a lot of power it can help any traction issues that come up. And finally it should help out fuel economy to boot, which is always a plus when performance is gained.

As far as the turbo... I'm going VGT. I should be receiving it tomorrow so will definitely post some pictures of it. Its going to be awesome. (since it is a VGT I won't have to rely on the lower ratios as much to get it to spool but it would still help out a bit).

Quote »pictured can be decieving, the r20 and r230 short snouts looks basicallyt he same, and the mounting earls looks the same, but they are not interchangable[/quote]Yeah, I know for sure the R200 and R230 stuff won't interchange at all... I'm just hoping the 350Z R200 will be similar enough to the Z32 R200 to at least bolt it up (the front mount that is).

Quote »ABS is for little girls, loose it [/quote]Ehh... ABS is one of the computer nannies that I can handle. I've been in a couple panic situations in other cars where ABS would have definitely been nice, been lucky so far though.

Quote »the diff carriers available for the 350 afik also fit the older r200 cases that were originally equipped with vsld's (which only matters if you want to use the vlsd output shafts)[/quote]I've wondered about that actually. If all else fails I'll definitely try going that route, with the older R200.

Quote »and custome driveshafts and adapters are fairly cheap when you aren't paying to overnite the parts[/quote]Yeah, I had been planning on custom driveshaft for a while but when I saw some pictures of the Z33 diff it got me to thinking that I might just be able to get an even lower ratio (or the same if I want) and get an off the shelf driveshaft to boot. If I have to settle for the Q diff I'll likely be getting a custom shaft from Shaftmasters.

[evildky]

loading the turbos by way of earign isn't all taht you think it is, it'll help you reach peak torque earlier but it also makes the lag much mroe noticible, tuning is by far the most important issue, my Z32 with the off the shelf chip sport 500's etc is the laggiest car I own, the L28ET of the Z31 spool sooo much faster, btu then they are both megasquirt'd, so I blame the lag on crappy spark mapping

[mtcookson]

If I can setup the VGT correctly I shouldn't have a whole lot of lag, even with the wider gearing. One of my bigger concerns is just getting longer gearing. The 3.538 should be pretty decent so I'll likely go with that one first but having the option to go even lower would definitely be nice.

I've driven turbo vehicles with close and wide gearing and close ratios for a turbo vehicle are just absolutely horrible. The turbo adds so much power and torque that you run through the gears way too fast. If I absolutely have to, I'll settle for the TTZ R230 but after driving my wife's TT I think it would be even more fun with some wider gearing.