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  1. M

    NP231 range hub upgrade

    I've got a question about upgrading the range hub and sleeve of the np231 in my XJ. I've already got a wide chain and 6 pinion planetary, its going behind a turbo stroker, nothing too crazy, and swapping the Tcase isn't an option, so I'm looking to make the 231 as strong as possible, the 231...
  2. M

    8.25 axle shaft dimensions

    I'm getting custom axles made for an 8.25". I know there are companies that make alloy shafts, but I need a different flange on the axle, and after a dozen phone calls to different companies, they all either said "No" or "Call Dutchman", and I can't get the stockers redrilled because the flange...
  3. M

    advice on early (pre97) vs late (post97) frame

    some background. I am about to start on a project xj. I already have the engine (4.7 stroker) at the machine shop, and I already have the ax15 and 231 to go behind it. I currently have a 90 with a lift that we drive, but I have a chance to get a good deal on a 99 with a blown motor. I plan...
  4. M

    hello, curious about whats going to break first

    hello, I'm finally making some headway on my wifes project, and although I've built tons of cars, I'm still sort of new to jeeps, so I was looking for what anyone thought was the weak link in this. 90 xj, -4.7 stroker, MS, probably a 75 dry nitrous shot, cammed for the low end -ax-15 freshly...
  5. M

    5 on 5 lug swap question, what to do

    so I got the lift on the wifes xj done tonight, horray, just put the wheels on and I'm set, only to find out I got royally hooked up by a fellow jeeper in wilmington nc on CL. He lied about the lug pattern on the wheels, I never thought to check because he said they came off the xj he delivered...
  6. M

    smogging a megasquirted renix

    this is a semi tech question, but you guys are going to be the experts on this one, and I will probably wind up getting stationed in cali again soon, so I hope you guys don't mind. I've got a 90xj, currently with the renix ECU the question I have is if I would be able to get away with...
  7. M

    stuck upper control arm bolt

    pretty much says it, I have a 90xj, putting a lift under it, got the front axle stripped off in about 30 minutes, all except for the passenger frame side upper control arm bolt/nut. I've spent hours hacking at it, bought an air recip, took a torch to it, hack saw (watch out, its pretty easy to...
  8. M

    WTB 95+ AX15

    I am looking for a 95+ ax15, no problem getting a trans in need of a rebuild, as long as the internals are intact (no stripped or broken gears). Doesn't have to have the bell housing or slave/throwout, I will be keeping the internal slave I already have. even if you just have a good lead on a...
  9. M

    231 planetary upgrade question

    has anyone tried drilling out the extra three planetary dimples in a later style planetary set and throwing in the gears from another 3 gear planetary to make a 6 gear. Really I guess my question here is has anyone drilled the holes and any issues they had in doing so? did you use a hss bit or...
  10. M

    how important is a spare np231

    I know a place I can get one that is in working used condition for 75$, I'm a bit new to jeeps and I'm tempted to get it so that I can rebuild it off the truck, but is it an item that is likely to ever be needed as a spare? I ask because my collection of parts for the wifes jeep is expanding...
  11. M

    Bilstein compatability question

    so for a few years I have been putting bilstein HDs on just about all of my cars, partly because I've found them to be a great shock or atleast better than any of the factor replacement stuff, and partly because autozone gives an absolutely rediculous lifetime warranty for them (banking on the...
  12. M

    first xj build, still some unanswered questions

    Hello, new guy here, although I'm not new to wrenching at all, but this is actually my first jeep I'm building (for the wife), usually I stick to chevys and volvo's. I have done a bit of home work, but I have a couple questions left that the searches didn't really clear up. 1. which HD...
  13. M

    2wd ax15 identification

    I just picked up a 2wd ax15, it matches all descriptions, but the output shaft has 26 or 27 splines. I am aware that 4wd version is different, and that I will have to change to the 4wd main/output shaft when I rebuild the trans. Supposedly this one came from an 88 2wd Comanche. Does anyone...
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