streeteg Posted August 9, 2007 Share Posted August 9, 2007 Well heres how the story goes.... my RB powered Z is about to get some extra power via some go fast goodies under the hood---The car is purely a street car. Something to have fun in on the road on the weekends, turn some heads, go to meets and work on/have a good time with. I certainly do not need to have a 1400 dollar quaife and I am having trouble sourcing a nice CLSD for my R200. My application: Spirited pulls/some drag, no autox no road courses My power Goal: 350-375 RWHP My questions: 1. Who is using a welded rear differential? 2. What has the lifespan been of that diff? 3. How does this compare to a phantom Grip particularly in terms of reliability Essentially I have an R200 sitting in my garage collecting dust and I know it is stronger then the 30yr old r180 i have in the car now. I am looking for the most reliable way to preserve the diff in spritied pulls and get traction to both wheels. Thoughts, Comments, questions anything--- thanks in advance -Eric Quote Link to comment Share on other sites More sharing options...
JMortensen Posted August 9, 2007 Share Posted August 9, 2007 Phantom Grip is a POS, don't bother. The Nissan CLSD is available through http://www.differentials.com and http://www.reiderracing.com and runs $550 or so. KAAZ and Cusco LSDs are more, but also a better design than the Nissan unit. Welded diff should hold up very well if properly welded. Have you read the diff sticky I wrote? If not, it has a lot of info on your different options. Quote Link to comment Share on other sites More sharing options...
katman Posted August 9, 2007 Share Posted August 9, 2007 I would save up and buy a real LSD. I wouldn't recommend a welded diff on the street. Quote Link to comment Share on other sites More sharing options...
auxilary Posted August 9, 2007 Share Posted August 9, 2007 what katman said. too many variables ending up in spinning out on wet pavement and totalling a good ride Quote Link to comment Share on other sites More sharing options...
johnc Posted August 10, 2007 Share Posted August 10, 2007 I wouldn't recommend a welded diff on the street. You're getting old... I drove on the street with one for two years and the current Nismo R-Tune 1.5 way LSD in my 350Z pretty much acts like a welded diff with it setup for 100% lock (I need to fix that). I'm getting tired of people running up to me in parking lots telling me something is broken in the back of my car. Quote Link to comment Share on other sites More sharing options...
tbellis Posted August 10, 2007 Share Posted August 10, 2007 I'm also new to the board, but have done a good bit of searching the internet resently for a good low cost differential. I found the R-200 LSD differential PG- Power Brute LOM59-12 at Reider Racing. However, when I called to places an order I was told that they have had supplier problems and are uncertain if they will be able to get anymore of these. If anyone has a line on an alternative please let me know. Quote Link to comment Share on other sites More sharing options...
streeteg Posted August 10, 2007 Author Share Posted August 10, 2007 I'm also new to the board, but have done a good bit of searching the internet resently for a good low cost differential. I found the R-200 LSD differential PG- Power Brute LOM59-12 at Reider Racing. However, when I called to places an order I was told that they have had supplier problems and are uncertain if they will be able to get anymore of these. If anyone has a line on an alternative please let me know. EXACTLY---the only differentials that "fit into my price range" have been out of stock for a while... As for the rain---the car will never be driven in the rain. Ever. So only dry summer pavement for me---My only question was reliability and a welded diffs ability to withstand power in straight line acceleration. I dont want to ruin a perfectly good r200 by welding it but it seems that that is not the case. jmortensen-- I spent a lot of time reviewing your write up on all the diffs. Very informative and I give you "props" for taking time out to write that up. But guaging by my needs for the car my questions of reliability werent really answered specifically in your thread.... That being said I will be brining my R200 to get welded at this place called Import Intellegence in PA where they have done plenty in the past. Not too shabby for about 50-100 bucks... Thanks guys! -Eric Quote Link to comment Share on other sites More sharing options...
jnjdragracing Posted August 10, 2007 Share Posted August 10, 2007 If you do mind some chirping around corners you will be okay, Have used spools in 12 bolt, and 9 inch on the street with out any issues. You do have to careful in the rain. The R200 welded has done fine for us and believe me we have put in through the test. I would note on welding the unit up, have then to weld up the spyder gears as well. I welded then up and did a complete pass around the unit. John Quote Link to comment Share on other sites More sharing options...
gjc5500 Posted August 10, 2007 Share Posted August 10, 2007 they hold up for strait line no problem, granted the welds are good. but in the corners, you can say goodbye to your tires after a while. i say DO IT! Quote Link to comment Share on other sites More sharing options...
Pop N Wood Posted August 10, 2007 Share Posted August 10, 2007 There is a big difference between California and Delaware. They can make the car a handful to park also. Quote Link to comment Share on other sites More sharing options...
v80z Posted August 10, 2007 Share Posted August 10, 2007 i HAVE A WELDED 3.90 R200. i THINK IT IS ONE OF THE STRONG POINTS IN MY DRIVE TRAIN. iI HAVE A SBC WITH 330 FT/LBS RWTORQUE AND RUN255/50 16 INCH kUHMO ECSTAS. iT IS NOT A DAILY DRIVER. bUT i LIKE IT. Quote Link to comment Share on other sites More sharing options...
Clifton Posted August 10, 2007 Share Posted August 10, 2007 I ran a welded diff in my truck for about a year before buying a locker. No problems in the rain. Maybe if I was 80 and decreped it would have been too much. I run one in my 71' 240 but it is coming out for a lsd. It does clunk on tight parking lot type turns but when rolling is fine other than a little extra push. Quote Link to comment Share on other sites More sharing options...
streeteg Posted August 10, 2007 Author Share Posted August 10, 2007 If you do mind some chirping around corners you will be okay, Have used spools in 12 bolt, and 9 inch on the street with out any issues. You do have to careful in the rain. The R200 welded has done fine for us and believe me we have put in through the test. I would note on welding the unit up, have then to weld up the spyder gears as well. I welded then up and did a complete pass around the unit. John wait I am a noob at differentials (Had a honda before). I thought all you did was weld the spyder gears? what else do you have to seam together? Quote Link to comment Share on other sites More sharing options...
Guest Britt Brown Posted August 11, 2007 Share Posted August 11, 2007 I race a GT-Lite road racer and use a Detroit Locker. Much less expensive and very effective. You will be glad you did the first time you try to push it in any direction but straight. Just remember to roll in and out of the power and it will last forever and you won't snap axle's Quote Link to comment Share on other sites More sharing options...
DHale_510 Posted August 11, 2007 Share Posted August 11, 2007 I ran a welded R180 in my ITS class raceer for years. It never failed. It was the devil to push around in the pits. It encouraged a very aggressive technique to drive but it was cheap. It seemed to loosen the half shaft bolts pretty often, and we went for some pretty wild slides sometimes. I am sure it was the diff, not the driver! It was almost impossible to autocross with, I really had to toss it into tight and long turns. It was a wrecking yard 240SX unit that cost about $100. I finally replaced it finally with a Nissan Comp clutch unit. Cost about $1200. The car is a much nicer car to drive and it pushes around almost reasonably. It even autocrosses pretty well, little of that old pitch and catch needed anymore. The axle bolts seems to stay tight. No more loud crunching scary noises from the tires winding up and letting go. I keep the welded for a spare, but only for a spare. Quote Link to comment Share on other sites More sharing options...
streeteg Posted August 15, 2007 Author Share Posted August 15, 2007 So just for clarification--- I am bring my diff to get welded up this week- Is all that needs to be welded together is the spider gears? or is there something else that needs to be seemed together? -E Quote Link to comment Share on other sites More sharing options...
Omar Posted August 15, 2007 Share Posted August 15, 2007 the main thing when welding it is cleaning the hell out of it. ive snapped a welded diff in road america at a drift day.... not fun. just clean it well before and after. its actually not that bad. i dailyed my s13 like that. u get used to it. and youll never want a open diff again Quote Link to comment Share on other sites More sharing options...
73240z Posted August 17, 2007 Share Posted August 17, 2007 Just took my R-200 in to a shop today to have it welded. I am building my z as a road race car, so I figure I can skip on spending $ for LSD internals and just make a cheap spool. I don't see many Le Mans cars running with LSD... streeteg - all that needs to be welded are the spider gears. All four corners on each side. Its better to connect the welds and fill all the gear teeth together. Just make sure to degrease the whole casing before, and use a whole can of brake parts cleaner and remove all the weld beads afterwards. Quote Link to comment Share on other sites More sharing options...
Clifton Posted August 17, 2007 Share Posted August 17, 2007 It's not a bad idea to weld the spiders to the carrier too. Lemans cars don't have too many tighr turns. That's were a welded diff is the worst. Every track in Az has atleast one turn that would kill me. Quote Link to comment Share on other sites More sharing options...
katman Posted August 17, 2007 Share Posted August 17, 2007 You're getting old... QUOTE] This is the internet, you're not supposed to know that. I'm a 17 year old stud muffin, yeah, that's the ticket. Quote Link to comment Share on other sites More sharing options...
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