Guest Heater Posted August 10, 2004 Share Posted August 10, 2004 For a medium horsepower(300hp) build up witch rear end would be better/stronger? The R180 or the R200 Quote Link to comment Share on other sites More sharing options...
blueovalz Posted August 10, 2004 Share Posted August 10, 2004 It is generally accepted that the R200 is stronger than the R180. Generally, bigger is stronger. Quote Link to comment Share on other sites More sharing options...
johnc Posted August 10, 2004 Share Posted August 10, 2004 The strength is not so much in the ring gear size (200mm vs. 180mm) as its in the differential unit. A R180 with a Nissan Comp LSD or a Quaife will be able to handle more horsepower without breaking then an open differential R200. And a R200 with a Nissan Comp LSD and/or a Quaife will be even stronger. I ran 320 horsepower through my R180s for a few years without any problems. All the R180s I used had Quaife ATBs. When you get into some big horsepower numbers (400+) then the ring gear size plays a more important part in overall unit strength. Jeff Priddy has had problems with R200 ring gears failing at the 600+ horsepower level. As a broad generalization, if you can run a R180 without breaking it then you're better off. Its lighter and has better driver's side halfshaft angles then a R200. Quote Link to comment Share on other sites More sharing options...
Phantom Posted August 10, 2004 Share Posted August 10, 2004 If you're not drag racing then the R180 would probably be the preferred unit. It is about 30 lbs. lighter than the R200 and is also the stock unit in the 240 and 260Z. Fewer modifications. Quote Link to comment Share on other sites More sharing options...
Guest Heater Posted August 10, 2004 Share Posted August 10, 2004 It will probably be 40% racing and 60% street driven, any other suggestions on that? Quote Link to comment Share on other sites More sharing options...
Phantom Posted August 10, 2004 Share Posted August 10, 2004 If you are talking drag racing I'd go with the R200. If you are talking about road racing (much gentler on the rear drive train) the R180 should be sufficient. Quote Link to comment Share on other sites More sharing options...
Guest rick458 Posted December 9, 2004 Share Posted December 9, 2004 I know this thread is WAY old but, if I go with the GMPP deluxe engine 330 hp 380 ft/lb and a good 200-R4 in my 260 the Auto should be easy enough on the rear end for the 180 to live a long life right? Also is there a fairly inexpensive way to LSD the R180? I know Quafie will sell me the parts for a grand but what about a Powertrax type setup? Quote Link to comment Share on other sites More sharing options...
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