Guest Anonymous Posted December 13, 2002 Share Posted December 13, 2002 Help!!! I bought a used 1987 R200 from a 1987 300ZX turbo (junkyard sale), assuming it would be an LSD. I was told 87-89 300ZXT came with LSD. But now, I hear talk of 87 1/2 or after 4-87 being an LSD. How can I have this junk yard check if it's an LSD before they ship? Date on door plate of car? Finned cover? I heard some non-LSD had finned covers anyway, but not on the 300ZXT, it WOULD be a fiined cover if LSD??? Is that true? Helppppppppppppppp! Quote Link to comment Share on other sites More sharing options...
mobythevan Posted December 13, 2002 Share Posted December 13, 2002 When I bought mine, I had the junkyard guy pull the cover real quick to see that it had the clutch inside. Quote Link to comment Share on other sites More sharing options...
auxilary Posted December 13, 2002 Share Posted December 13, 2002 easiest way to tell: turn one halfshaft. if the opposing side halfshaft spins in the same direction you turned yours, it's limited slip. if it spins the other way, it's open diff. Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted December 13, 2002 Share Posted December 13, 2002 Does anyone know if the earlier 300ZX cars (before LSD) ever had the finned cover? Or does non-turbo mostly have a non-finned cover, even in 87-89? I am just talking ZX ony (NOT SX). I am just wondering how much I can trust the "finned" cover becasue it IS finned on this 87 300ZX turbo. Thanks! Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted December 14, 2002 Share Posted December 14, 2002 The 1987 LSD had 3.70 gearing..(while few non Turbo (?) 80's had this gearing. Take off the rear plate and rotate the ring gear until you see these numbers stamped in the edge facing you: "37.10" is a 3.70 but the suggestions by Moby and Aux. are a better detrmination.So if it has a clutch pack, rotates the same direction and has 37.10 stamped on the ring gear it must be a LSD Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted December 14, 2002 Share Posted December 14, 2002 I wish I wasn't in Michigan and the part in Calfornia! I bet they won't bother with all that now that they have my money, but I will ask them just the same! Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted December 14, 2002 Share Posted December 14, 2002 Have them put it in writing that it is a 1987 300zx turbo R200,3.70 to 1 gearing LSD not a viscous (all white 1988 SE) slip differential.. Most likely it is a LSD Quote Link to comment Share on other sites More sharing options...
johnc Posted December 14, 2002 Share Posted December 14, 2002 > turn one halfshaft. if the opposing side > halfshaft spins in the same direction you > turned yours, it's limited slip Not true. Often an open diff will do this just from age and old diff fluid. Also, a welded diff will exibit this same trait. Conversly, a worn out LSD may show the halfshafts turning in opposite directions. As I've said thousands of times - TAKE THE COVER OFF AND LOOK INSIDE! Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted December 14, 2002 Share Posted December 14, 2002 Does anyone have a photo of what a LSD looks like inside under the cover versus a NON LSD? I am not sure the Mickey-mouse outfit will know what they are looking at, and I don't know what to tell them! I see photos of what it looks like on a car, but never saw either under the cover. Or is there somekind of tell-tale sign he can look for???? Quote Link to comment Share on other sites More sharing options...
johnc Posted December 14, 2002 Share Posted December 14, 2002 Here's some information and pictures about the Nissan clutch pack LSD. I don't have any photos of the Viscous one. http://www.gordon-glasgow.org/lsd1.asp Quote Link to comment Share on other sites More sharing options...
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