boardkid280z Posted October 31, 2012 Share Posted October 31, 2012 I'm about to replace my worn out diff with this used one. Just checking the noises and wanted to see what people think. First I'm turning the input shaft and it makes a clicking sound. Second I turn one of the output shafts and there is a little bit of a grinding sound. Third I turn the ring gear and again you can hear the clicking. So it seems like the ring gear and pinion gear click when they hit. Is that normal? And the spider gears sound like they grind a bit. Is this normal? This is an R200 open 4.36 out of a Nissan truck (I'm told). It is going in my 1978 Datsun 280Z turbo. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted October 31, 2012 Share Posted October 31, 2012 All of those sounds are normal. I wouldn't call any of them "grinding". That's just the noise of the gears working on each other. Click is backlash which again is normal and necessary. Quote Link to comment Share on other sites More sharing options...
boardkid280z Posted November 3, 2012 Author Share Posted November 3, 2012 (edited) I got the diff up in place, but it turns out the studs on the back are slightly closer together than on the S30 diff. (the new one is out of a truck) After looking at them, the rear covers are completely different too.So I'll just have to open up the mounting holes in the moustache bar a little bit. Edited November 3, 2012 by boardkid280z Quote Link to comment Share on other sites More sharing options...
RB26powered74zcar Posted November 3, 2012 Share Posted November 3, 2012 (edited) I got the diff up in place, but it turns out the studs on the back are slightly closer together than on the S30 diff. (the new one is out of a truck) After looking at them, the rear covers are completely different too. So I'll just have to open up the mounting holes in the mustache bar a little bit. You must have a R180 mustache bar in your car... Edited November 3, 2012 by RB26powered74zcar Quote Link to comment Share on other sites More sharing options...
JMortensen Posted November 3, 2012 Share Posted November 3, 2012 You must have a R180 mustache bar in your car... Actually, looking at the video again, he has an R180 diff. Quote Link to comment Share on other sites More sharing options...
RB26powered74zcar Posted November 3, 2012 Share Posted November 3, 2012 Actually, looking at the video again, he has an R180 diff. Yepp... he had a R200, swapping to a R180. Good reason for the holes being off. Quote Link to comment Share on other sites More sharing options...
boardkid280z Posted November 6, 2012 Author Share Posted November 6, 2012 Well, that's good to know. Hah, I don't know enough about these diffs. I thought I had an R200 in the car, and I thought I was getting an R200 to put in. How do you identify the R180? Quote Link to comment Share on other sites More sharing options...
JMortensen Posted November 6, 2012 Share Posted November 6, 2012 R180 is more rectangular with rounded corners. R200 is more octagonal. Quote Link to comment Share on other sites More sharing options...
Leon Posted November 6, 2012 Share Posted November 6, 2012 I typed in "R200 diff" into google image search, lo and behold... Quote Link to comment Share on other sites More sharing options...
tamo3 Posted November 7, 2012 Share Posted November 7, 2012 Well, that's good to know. Hah, I don't know enough about these diffs. I thought I had an R200 in the car, and I thought I was getting an R200 to put in. How do you identify the R180? You can find out it with plug location and measurement of the size. Quote Link to comment Share on other sites More sharing options...
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