Unclejake Posted June 3, 2019 Share Posted June 3, 2019 VIN number is no use and there's no stickers on the diff. The vehicle is behaving like an open diff, but perhaps there's a chance it's got a buggered LSD clutch pack in there? She's a 400.000kms old 1993 Nissan Atlas 4x4 F23... and there's not much online info for these trucks (also known as a Nissan Cabstar), but it's very similar mechanically to an early non-turbo Terrano or early Navara.TD27 non turbo and 5 speed. It's an import (came into NZ in 1995) with no factory VIN apparent. The NZ border VIN is on the chassis, and matches all the paperwork, but that's no use finding out axle details Given my location and lack of garage (or even a paved area) it'd be wonderful to establish if the vehicle has a worn LSD (so I can order parts in advance) without having to remove the brakes, axles and diff head just for a look, and then put it all back together again the same day without any improvement. I've just fitted some new free wheeling hubs (Navara) without issue. I need to leave the hubs in FREE as much as possible due to front CV angles, but I'm getting stuck at least once a day in one wheel drive so I want a tighter rear diff. I did try fitting Terrano automatic FWHs, but that turned out to be a major undertaking so I abandoned it. Does anyone have a genius idea for checking if there may be an LSD inside that rear housing without pulling the diff head out? Quote Link to comment Share on other sites More sharing options...
tortron Posted June 3, 2019 Share Posted June 3, 2019 Could try some friction modifier and see if it improves? Edit* or rather some oil without any friction modifier to make it less slippery Quote Link to comment Share on other sites More sharing options...
Beaver Posted June 3, 2019 Share Posted June 3, 2019 Old wifes tail that the wheels will turn in opposite directions if it's an lsd? Or is that for non lsd.....fuck knows 1 1 Quote Link to comment Share on other sites More sharing options...
Unclejake Posted June 3, 2019 Author Share Posted June 3, 2019 15 minutes ago, tortron said: Could try some friction modifier and see if it improves? Sand? Quote Link to comment Share on other sites More sharing options...
Yowzer Posted June 3, 2019 Share Posted June 3, 2019 Yeah open diff will spin the opposite wheel in reverse if you hold the driveshaft and spin a wheel, but then so will a Torsen LSD. 1 Quote Link to comment Share on other sites More sharing options...
tortron Posted June 3, 2019 Share Posted June 3, 2019 2 minutes ago, Beaver said: Old wifes tail that the wheels will turn in opposite directions if it's an lsd? Or is that for non lsd.....fuck knows Will turn the same way if lsd. Open will go backwards If it's a stuffed lsd it would probably still do that spinning gently by hand 1 Quote Link to comment Share on other sites More sharing options...
tortron Posted June 3, 2019 Share Posted June 3, 2019 1 minute ago, Unclejake said: Sand? Just normal diff oil. They are less slippery which makes lsd plates chatter as they stuck to each other Quote Link to comment Share on other sites More sharing options...
Yowzer Posted June 3, 2019 Share Posted June 3, 2019 Can you see the diff nugget through the oil fill hole? Might give you some idea if you can see the centre 2 Quote Link to comment Share on other sites More sharing options...
Unclejake Posted June 3, 2019 Author Share Posted June 3, 2019 4 minutes ago, tortron said: If it's a stuffed lsd it would probably still do that spinning gently by hand I'll try that. Quote Link to comment Share on other sites More sharing options...
Unclejake Posted June 3, 2019 Author Share Posted June 3, 2019 Just now, Yowzer said: Can you see the diff nugget through the oil fill hole? Might give you some idea if you can see the centre Ahaaa! That I will also try. Great thinking. I have been hankering for a smartphone endoscope anyway. I'll order one now 4 Quote Link to comment Share on other sites More sharing options...
JoKer Posted June 3, 2019 Share Posted June 3, 2019 yeah opposite = open as in jack er up & spin one, LSD should catch up after half a turn & follow 'your' wheels direction Quote Link to comment Share on other sites More sharing options...
kyteler Posted June 3, 2019 Share Posted June 3, 2019 Is the chassis data on carjam? Quote Link to comment Share on other sites More sharing options...
Unclejake Posted June 3, 2019 Author Share Posted June 3, 2019 The chassis number is on Carjam.... if that's what you mean? Rego is YA8537 Quote Link to comment Share on other sites More sharing options...
kyteler Posted June 3, 2019 Share Posted June 3, 2019 I thought it might have more than the U-SP8F23 it does have, is all. Quote Link to comment Share on other sites More sharing options...
Unclejake Posted June 3, 2019 Author Share Posted June 3, 2019 I'll try the endoscope. I bought one a few mins ago... it may not get here fast though. I'd put a switchable locker in the diff if they were $500, but they're ~ $2k so yeah, but nah. Quote Link to comment Share on other sites More sharing options...
Yowzer Posted June 3, 2019 Share Posted June 3, 2019 Weldie weldie... 3 Quote Link to comment Share on other sites More sharing options...
Unclejake Posted June 3, 2019 Author Share Posted June 3, 2019 Snappy...snappy. In other news: I have almost hit two young cattle beasts in as many weeks at night here. It's terrifying. They either just stand (black as hell) in the middle of the road, or bolt out of no-where right in-front of the vehicle. I put a 50" light bar on a week or so ago, but just about hit one at ~ 70kmph on Friday. I think I got its tail (only) with the passenger's headlight. It crossed in the rain and dark from my right. Praise be to the sweet baby Jesus that it didn't end up on my lap. In an Atlas frontal impact you only have a thin sheet of metal and then your knees. You'd possibly be a long time waiting for an ambulance on this island... (arguably the next day. Some days I can drive for 5 hours without seeing another vehicle.) EDIT: And yes, I carry a headlamp, rifle, boning knife and skinning knife in the truck at all times. Danger would be proud of me 4 Quote Link to comment Share on other sites More sharing options...
ajg193 Posted June 3, 2019 Share Posted June 3, 2019 You probably wouldn't even need the endoscope to see into the diff enough to know if it is lsd or open Quote Link to comment Share on other sites More sharing options...
Yowzer Posted June 3, 2019 Share Posted June 3, 2019 Weld up some Aussie spec Roobars? Didn't realize the island was big enough to drive for 5 hours tbh 1 Quote Link to comment Share on other sites More sharing options...
Unclejake Posted June 3, 2019 Author Share Posted June 3, 2019 From one end to the other (south to north) is about 1.5 hours non-stop in each direction, but there's bits off either side too. When friends come to visit we usually go out for about a five hour look-see. The Atlas is my only vehicle here so I'm kind of careful with her. The Holden crew here a few weeks ago were probably jealous but (TBH they were mainly really nice people). /SPAM 2 Quote Link to comment Share on other sites More sharing options...
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