Differential question

[Reverend]

Yes, bearings. There was a whole lotta options. But if anyone has full list of what i need, it would be appreciated.

[jmortensen]

I forgot they kinda hid the lookup utility. Try this: http://www.showmetheparts.com/timken/#

It doesn't show the ball bearing at the end of the pinion. I think that one is going to be dealer only.

Edited January 11, 2012 by jmortensen

[Lazeum]

You should also check in Europe. Just in France most of us are changing our R180 with R200 So you should check on zclub.net, datsun-france.com, etc. you will find "locally" a diff, I'm quite sure!

First reason is to get "better" ratio, the other one is that it is much easier to fix a R200 since most of the parts are still easily available.

[olzed]

Can you get any R 180 diffs in Finland? I doubt you would notice any difference with a 3.54.

[Oiluj]

I have a 77' 280Z 5-speed waiting to go into my stock 240Z I was concerned about the gearing, so I put together a chart showing the difference between the stock diff and the 3.54 diff.

If I recall, (it's on my home computer), with the stock diff and 280Z 5-speed, gearing is between 6 to 9% higher than stock. With the 3.54 diff, gearing was almost identical as with the stock 4-speed, with 5th operating as an overdrive.

[Reverend]

I've been offered R200 (from Laurel) with 4.11 gearing and R180 with tail lock (right word?) Prices were too high so i refused. But if i manage to get "new" R180, how can i know is it the same kind of screamer as my current one? I've been looking the FSM and rebuilding seems a bit tricky..

[Zed Head]

I don't know about the R180s but the R200s tend to be loud in general. The noise can be transmitted in to the cabin through worn rubber mounts allowing metal mount parts to contact, through stiffer urethane bushings, a lack of insulation or carpet on the rear deck, etc. It may be that your R180 is not worn out, and that you can reduce the noise through other means.

If you're just trying to reduce the noise, an R200 might not get you anywhere. You might consider new mounts and/or carpet and insulation in the cabin. An alternative.

[Reverend]

I got new carpets+padding in my cabin. Also soundproofed half of the car. But if you replace all the bearings etc, sound should go away?

OT. for some reason i cannot write to HybridZ forums, even i have working account..

[Reverend]

One local Z owner promised to do the rebuild (he is a mechanic). Now if someone would kindly provide me with info about all the necessary parts needed for rebuild?

[Reverend]

http://www.rockauto.com/catalog/moreinfo.php?pk=257644

http://www.rockauto.com/catalog/moreinfo.php?pk=218694

http://www.rockauto.com/catalog/moreinfo.php?pk=127946

http://www.rockauto.com/catalog/moreinfo.php?pk=218868

http://www.rockauto.com/catalog/moreinfo.php?pk=253183

http://www.rockauto.com/catalog/moreinfo.php?pk=1837048

http://www.rockauto.com/catalog/moreinfo.php?pk=498870

what else?

[Zed Head]

I think that you are embarking on a lonely quest. Not many people rebuild their differentials, and those that do, from what I've read, tend to have problems afterward. Even the guys on these forums that have lots of experience have stories. Despite the simple concept and relatively small number of parts, the parts have to fit precisely or you'll just get more noise, but with new parts. I had considered rebuilding mine, but couldn't justify it, since replacements were easy to find.

Good luck. Report results if you do go for it, there are a lot of noisy differentials out there.

[madkaw]

If you are going to spend any real money to rebuild a 35+ old diff, I would consider the Subaru diff option. You might have 800$ or more into it, but you would have an LSD made in the last 10 years and a variety of ratio options. That's assuming that John C would ship axles that far. The option is spelled out on hybridz . Maybe subbys are more available over there. Just a thought .