Guest kevbob75 Posted May 29, 2008 Share Posted May 29, 2008 i have been runnin a welded rear end for quite some time and never had any problems with any car i have ever had it on. i changed the fluid but i put the wrong weight gear oil in not realizing what i did i drove it for a cool 5 minites and then the rear started making a really bad grinding noise. i parked it for a while and came back a few days later and limped it to the shop almost all the oil was gone and some pretty big metal chunks were in it i am forced to buy a new diff now but i am wondering what caused all this in the first place as this would not happen again to anyone and any recomendations on a new diff to buy and control arms while i'm at it Quote Link to comment Share on other sites More sharing options...
rudypoochris Posted May 29, 2008 Share Posted May 29, 2008 What model, what differential, and what gear oil? Quote Link to comment Share on other sites More sharing options...
Guest kevbob75 Posted May 29, 2008 Share Posted May 29, 2008 1975 280z w/stock rear i have been runnin a welded rear end for quite some time and never had any problems with any car i have ever had it on. i changed the fluid but i put the wrong weight gear oil in not realizing what i did i drove it for a cool 5 minites and then the rear started making a really bad grinding noise. i parked it for a while and came back a few days later and limped it to the shop almost all the oil was gone and some pretty big metal chunks were in it i am forced to buy a new diff now but i am wondering what caused all this in the first place as this would not happen again to anyone and any recomendations on a new diff to buy and control arms while i'm at it Quote Link to comment Share on other sites More sharing options...
Guest kevbob75 Posted May 29, 2008 Share Posted May 29, 2008 sorry bout that i'm a rookie 75 280z stock rear i put 70 wieght but i think it takes 90 yes? Quote Link to comment Share on other sites More sharing options...
rudypoochris Posted May 29, 2008 Share Posted May 29, 2008 sorry bout that i'm a rookie75 280z stock rear i put 70 wieght but i think it takes 90 yes? Was it an automatic or a manual car? The automatics had the weaker R180, manuals have the stronger R200 if I remember correctly. I believe 80w-90 to be the specification if I remember correctly. Could the metal chunks be welds from the spider gears breaking off? 70 weighs doesn't seem THAT light. Quote Link to comment Share on other sites More sharing options...
Guest kevbob75 Posted May 29, 2008 Share Posted May 29, 2008 any recomendations on another aftermarket diff to buy or should i go with a junkyard R200 and where can i find some nice control arms (tubular maybe) Quote Link to comment Share on other sites More sharing options...
rudypoochris Posted May 29, 2008 Share Posted May 29, 2008 Arizonazcar.com Modern-motorsports.com Zraceproducts.com All offer control arms, the second two are tubular steel. The first is billet 6061. I would just go for a junkyard R200 if I were you (provided your car already has an R200, if it has an R180 it will require additional componentry to swap), or put a wanted ad out. If you want to go LSD now is probably the time also. Alternatively you could find out what went wrong in the differential. It may be cheaper/better to start with fresh bearings and such. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted May 29, 2008 Share Posted May 29, 2008 I moved your thread, as it has nothing to do with V8s. Please don't double post. Post in the category that fits the topic only, and only do it one time. Thanks. As to your questions, the R200 should be strong enough. Quote Link to comment Share on other sites More sharing options...
buZy Posted May 29, 2008 Share Posted May 29, 2008 Quote Link to comment Share on other sites More sharing options...
rwdawg2 Posted May 29, 2008 Share Posted May 29, 2008 A picture is worth more than any words. I love it Quote Link to comment Share on other sites More sharing options...
jnjdragracing Posted June 2, 2008 Share Posted June 2, 2008 We love the R200, we will really stress test it with the new engine combo....more to come. Quote Link to comment Share on other sites More sharing options...
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