Scott_M67 Posted September 17, 2010 Share Posted September 17, 2010 Hi Gary, I sent you an email looking for clutches. Scott Link to comment Share on other sites More sharing options...
Savage42 Posted September 17, 2010 Share Posted September 17, 2010 Got it! I've got you covered! Link to comment Share on other sites More sharing options...
3ftyZ Posted September 18, 2010 Share Posted September 18, 2010 Go back to the very first post in this thread and it's pretty straight forward as to what you need to do. If you want to use all 6 new clutches, then you take out the two existing ones and use all 6. If you retain the 2 OEM clutches, then just add the 4 clutches in the positions in this picture. This is how it's been done with the 100+ units that people have done over the years and not a single problem to date. (that I'm am aware of) Hope this helps. Savage. Thanks again for your help. So, the clutches and the plates are all metal, is this correct? There is no 'friction' material (like a clutch in a transmission) on these LSD units? Sorry for the 'dumb' questions, just a noob looking for help. Thanks! Link to comment Share on other sites More sharing options...
Scott_M67 Posted September 18, 2010 Share Posted September 18, 2010 It is not uncommon to use solid steel for high performance clutches in differentials. The friction material found in some OEM and aftermarket disks just burns up or comes apart in these applications, that why solid steel is used. Link to comment Share on other sites More sharing options...
Gollum Posted January 20, 2011 Share Posted January 20, 2011 Also remember that these clutches are working in a wet oiled environment. Your clutch on the flywheel is a dry environment. The clutch material that contacts the flywheel is not so different than brake pad material, and we all know that grease on your rotors is BAD for braking. Same thing in a diff. You have to take the oil into account. And in this environment, metal on metal for a clutch won't wear the same as it would dry, and will have a very different break away characteristic compared to dry. All that being said, I'm reading this reading up on what my options are for converting to a LSD down the road. Does anyone know what the clutch/spacer pack looks like in the power brute carrier? Some seem to say it's a lot like the Nissan unit in the Z31, but I can't find info on what the break away levels are like from as-ordered and if the same clutches could be used, or how many clutches it has in it. Link to comment Share on other sites More sharing options...
JMortensen Posted January 20, 2011 Share Posted January 20, 2011 There is a thread where bjhines and I were arguing over this, because I had the Z31 diff apart and he had the Power Brute apart. We were both sure that we were right (we were) and the other was wrong (we weren't). You can look and find that thread if you want, but the basic jist is this (maybe bjhines will see this and fill in any gaps in my memory). The Power Brute has more clutches. I think it has more clutches than a Z31 with clutches added. It has more aggressive ramps on the cross pins, so it puts more pressure on the clutch stack. It has thrust washers on the gears, where the Z31 doesn't. I think that's about it. So basically, it's built stronger and more aggressive in every respect. To the Z31 LSD's credit though, apart from people who strip off the clutches, you don't hear too many people complaining about wheel spin with them. Link to comment Share on other sites More sharing options...
bjhines Posted January 21, 2011 Share Posted January 21, 2011 The LOM-59 unit to fit the R-200s was completely different than the factory unit. 6 disks per side for 12 total low ramp angles Forged cross instead of single pin Zero thrust side gears for constant internal gear lash very low preload for better turn in overall larger and stronger components Link to comment Share on other sites More sharing options...
JMortensen Posted January 21, 2011 Share Posted January 21, 2011 The Z31 has a forged cross with 4 pinions and a factory preload of about 15 lbs. Not sure what is larger in the PB either. I think they're the same size clutches and all that, just different ramp angles and thrust washers and more clutches. Link to comment Share on other sites More sharing options...
Fairlady240Z Posted April 16, 2013 Share Posted April 16, 2013 Great found this thread again bought the clutch packs from Savage now have info for rebuild thank you Link to comment Share on other sites More sharing options...
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