7.5 Rear rebuild and gear swap Reply #16 – June 23, 2012, 03:37:50 AM Drifting with open rear not quite possible. With all that u put this thing through, I believe you need something a little more stout than factory limited slip. Spool would be killer, but u would loose all street driveablity. I would use a Detroit Locker or something like it. Try looking into off road magazines or sites for rear end. 7.5 is pretty tough, but you may need to step up to an 8.8 or possibly a 9. Quote Selected
7.5 Rear rebuild and gear swap Reply #17 – June 23, 2012, 03:52:57 AM Quote from: TOM Renzo;392825In all the years in this business i have never seen a posi unit burn clutches like that, I think it is time to stop DRIFTING. That unit shows TREMENDOUS FRICTION AND HEAT ISSUES. It tells me the unit is trying to do it's job of keeping power to both wheels and it CANT. If i may!!!! If you keep on DRIFTING i would suggest an OPEN REAR!!! Personally my view on drifting is that is is the DUMBEST THING I HAVE EVER SEEN ANYONE DO WITH AN AUTOMOBILE!!! Just me could be wrong!!! I myself would not put my car through that. I do, however, support the OP in his endevors. American muscle kick'n tail in a ricer sport.... Gotta love it! Must be a lot of fun as well. Quote Selected
7.5 Rear rebuild and gear swap Reply #18 – June 23, 2012, 11:30:04 AM I doubt the carrier/clutches were setup wrong. I see it was the right pack which as in drag racing is more likely to spin more. I've seen damaged fibers many times (mostly in trucks that get stuck alot). In a drifter car, I think you'll be doing this again, more often since it's a light duty 7.5". Quote Selected
7.5 Rear rebuild and gear swap Reply #19 – June 23, 2012, 01:53:00 PM I see that the clutch plates are dry. I might suggest, If you didn't do it, is to remove them and pre-soak them in a mixture of the oil N friction modifier.A Detroit locker or a Torsen dif would be a good choice for ya. I don't know about the availability for ur 7.5 though. Do I see a 8.8 in your future?? Quote Selected
7.5 Rear rebuild and gear swap Reply #20 – June 23, 2012, 10:29:45 PM Quote from: Chrome;393058I myself would not put my car through that. I do, however, support the OP in his endevors. American muscle kick'n tail in a ricer sport.... Gotta love it! Must be a lot of fun as well. Thanks for the support. It was supposed to be built with a locker originally. I don't know why the shop used the trac-lok. I did configure it more aggressively this time with a friction disc between every steel instead of the stock configuration where there were two steels butted together, only making use of one side of those two clutches. I also placed one of my old steels before the shims so the outside of the last clutch disc is being used instead of spinning against a shim, which would have just spun too. Most guys are running spools or welded diffs, but I drive my car almost every day. It's still my grocery getter and daily commuter. The LSD hasn't let me down yet. Even with those bent clutches it was still burning both tires:)I know drifting is hard on the car, but I think I enjoy the challenge of finding the weak links and building it stronger. I would get bored if I didn't always have something to work on. Quote from: 1BadBird;393088I see that the clutch plates are dry. I might suggest, If you didn't do it, is to remove them and pre-soak them in a mixture of the oil N friction modifier.A Detroit locker or a Torsen dif would be a good choice for ya. I don't know about the availability for ur 7.5 though. Do I see a 8.8 in your future??After seeing how easy it is to pull the rear end I may swap in an 8.8 from a turbo coupe if the right deal comes along. There are definitely a lot more parts available for an 8.8. Very few options for the 7.5. I will do the pre-soak too. thanks for the tip. I pressed the new bearing onto the pinion gear last night after freezing the pinion and heating the bearing, I pounded It down with a piece of 2" exhaust tubing and a small sledge hammer. went on nice and easy. I'm supposed to be waiting for some help from a friend to set up the gears, but if he's not there before monday I'm just gonna do it myself. Quote Selected
7.5 Rear rebuild and gear swap Reply #21 – June 23, 2012, 11:58:36 PM Quote from: TOM Renzo;392872Now that is something to catch my fancy. Lets put a spool in a street car. This is a street car we are talking about am i correct??? If it was just used for drifting a spool would be fine. But that posi unit is clearly destroyed i would say. Just me could be wrong again!! I said a lot of them did it. Where did I recommend that he do the same?QuoteDrifting with open rear not quite possible.THIS is the point I was driving at. An open diff would be a step in the wrong direction. If it were me using my car for the same purpose as the OP? Torsen diff....I think a Detroit Locker would be less predictable then the Torsen in a drifting situation. The Powertrax Lock right (another full locking diff) is a little easier to figure out in my experience between the two. I have the Detroit in the Stang and the Powertrax in the Cougar.Basically anything to get rid of the spider gears and clutch plates. Quote Selected
7.5 Rear rebuild and gear swap Reply #22 – June 24, 2012, 12:34:00 AM You can get an open rear sideways, but you can also pull the tire off of the rim in a slide. I did that a time or two showing off back in my high school days. My vic has a locking 3.55 8.8"s rear axle, and gets sideways quite easily in light rain. If I excelerate around a corner, even lightly, the tail will kick out and I can hold it for a bit. As soon as the tires grab though, it goes which ever direction the front tires are pointed, so it will snap very hard if I'm not on top of it. It has needed tires for a while though. It expires this month, and I was surprised when they passed last year. Quote Selected
7.5 Rear rebuild and gear swap Reply #23 – June 24, 2012, 11:17:23 AM Quote from: bryan163;393117a friction disc between every steel instead of the stock configuration where there were two steels butted together, only making use of one side of those two clutches. I also placed one of my old steels before the shims so the outside of the last clutch disc is being used instead of spinning against a shim, which would have just spun too. Uhhhhh. I've never seen a stock configuration where it was 2 steels butted together. That IMO is where that shop messed up big time by doing that. I used to work with a guy that live next door to me that built rear ends for a living and we NEVER did that. We built them for drag, off road, circle track, street.Quote from: bryan163;393117 I will do the pre-soak too. thanks for the tip.Any time. Another little tip for ya, get the old pinion bearing removed and take a barrel sanding roll and lightly sand the inside of the old bearing till it slides easily over the old pinion shaft. That makes it way easier to check the pinion depth and to make the required shim changes.Also, when/if you swap to a 8.8 and it has a LSD, you can get carbon fiber discs for it. That's what's in my Cobra 03' IRS diff.Hope all goes well.John Quote Selected
7.5 Rear rebuild and gear swap Reply #24 – July 04, 2012, 01:16:08 PM Update: I finally got around to putting my axle back in the car last night after work. I'm really liking the 3.45 gears a lot better than the 4.10s that i took out. I was worried that I would miss the low end grunt, but somehow it doesn't feel any less powerful off the line and now I can go faster on the top end :) The LSD is working great too. So glad I got it ready in time for the 4th! Quote Selected
7.5 Rear rebuild and gear swap Reply #25 – July 04, 2012, 08:22:28 PM Now keep it off those SLIDER TRACKS and give it a break. I know sneakers are cheap at WALL MART but sliding a car is instant WALKING. Quote Selected
7.5 Rear rebuild and gear swap Reply #26 – July 05, 2012, 12:26:45 AM Suggestion noted. lol Quote Selected
7.5 Rear rebuild and gear swap Reply #27 – July 05, 2012, 10:29:40 PM Just messing around and having some fun. Thanks!! Quote Selected
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