Notice: We request that you don't just set up a new account at this time if you are a previous user.
If you used to be one of our moderators, please feel free to reach out to Chris via the facebook Outerlimits4x4 group and he will get you set back up with access should he need you.
Recovery:If you cannot access your old email address and don't remember your password, please click here to log a change of email address so you can do a password reset.

P38a transfer case

Tech Talk for Rover owners.

Moderator: Micka

Posts: 3064
Joined: Sun Jun 12, 2005 11:00 pm
Location: Yinnar South, Vic

Post by cloughy »

muddydigger wrote:
cloughy wrote:
muddydigger wrote:Cloughys a mechinal genius no doubt, he just forgets some of us arnt quite so mechanicaly minded :oops: , and for me its only a cse of knolledge when I have to do the work, which fortunatley for me, I havent yet :) . I respect the man and his knoledge, he just needs to remember some of us only have mechanical apptitude of sloths. ;)
Nah, no mechanical genius, just a crunt :D
Well I was trying to be nice but yes you were being a crunt :D
As opposed to a time when I'm not? :?

Spose, when I sleep :D
Wanted: Car trailer or beaver tail truck, let me know what you got
Posts: 309
Joined: Sun Apr 24, 2005 8:20 pm

Post by Thommo 73 »

it'll get the 1uz treatment when the motor goes. but this thing is for camping and boat towing i still have the middy to pull you up hills. :lol:
1uzed and no home for it
Posts: 3064
Joined: Sun Jun 12, 2005 11:00 pm
Location: Yinnar South, Vic

Post by cloughy »

Not that rangie an early one. save doing the coil conversion

It won't be pulling fark all out and hasn't been for how long? :D

Atleast I blew a CV on the side of a muddy hill, you got stuck in a gutter :finger: :rofl:
Wanted: Car trailer or beaver tail truck, let me know what you got
Posts: 176
Joined: Sat Jun 16, 2007 8:18 am
Location: New Zealand

Post by bigbad »

Thinking about it, if this centre diff is used in any other transfer cases there may be one that is manually locked, so the dog may already exist, if you can find the borg warner part number for the diff you may be able to find if it is used in any others.
Posts: 3288
Joined: Sun Feb 02, 2003 10:15 pm
Location: Central West NSW

Post by Slunnie »

Hmmm. It looks like its not just a matter of adding a locking dog.

The reason behind this is there are 2 shafts (1 inside the other) from the centre diff that go into the VC. Because the centre one is the drive from the other side of the centre diff and going through to the rear diff, and the outer shaft is what drives the front diff, if the VC is removed and replaced with a locking dog, the centre diff will end up working as permanently locked 4WD when the dog is locked and no drive at all when the dog is unlocked.

The locking dog would need to be inside another shaft to work. I guess this could be done by manufacturing a locking dog using similar principles to that used by JacMac in their locking diffs, but its a lot of effort to produce something which I suspect still has a weak link in it anyway, and the weak like is the shaft that travels through the middle of the centre diff from the rear output through to the VC unit.

oh well. It was interesting anyway. I was hoping a locking dog could be used in place of the VC and actuates with an LT95 actuator along the lines of how Sam O controls his new LT230 disconnect.
Cheers
Slunnie

Discovery TD5, Landy IIa V8 ute.
Posts: 176
Joined: Sat Jun 16, 2007 8:18 am
Location: New Zealand

Post by bigbad »

The reason behind this is there are 2 shafts (1 inside the other) from the centre diff that go into the VC. Because the centre one is the drive from the other side of the centre diff and going through to the rear diff, and the outer shaft is what drives the front diff, if the VC is removed and replaced with a locking dog, the centre diff will end up working as permanently locked 4WD when the dog is locked and no drive at all when the dog is unlocked.
The dog would have to engage the outer spline to the front output even when not engaging the rear shaft, the front output shaft is actually the VC
The locking dog would need to be inside another shaft to work. I guess this could be done by manufacturing a locking dog using similar principles to that used by JacMac in their locking diffs, but its a lot of effort to produce something which I suspect still has a weak link in it anyway, and the weak like is the shaft that travels through the middle of the centre diff from the rear output through to the VC unit.
Inside the other shaft, or inside the VC housing if the silicon and plates were removed, must be lots of dead ones around to open up. Even if the VC is removed there will still be that amount of room in the case. But yes the weak link would be the rear drive shaft, but without seeing one I cant say how week it is, may still be stronger than a rear axle shaft since it doesnt have the torque multiplication of the rear diff gearing.
Posts: 309
Joined: Sun Apr 24, 2005 8:20 pm

Post by Thommo 73 »

couldn't you just remove the VC all together and replace it with a soild shaft and then put the lockin dog on the front output shaft of the centre diff and lock the rear output?
like in a part time kit for an 80 toyjo.
haven really had much to do with VC's.
1uzed and no home for it
Posts: 176
Joined: Sat Jun 16, 2007 8:18 am
Location: New Zealand

Post by bigbad »

If he wants part time it is simple, but I dont think that was the intention
Posts: 3288
Joined: Sun Feb 02, 2003 10:15 pm
Location: Central West NSW

Post by Slunnie »

Thats correct. What I thought may convert it into a constant 4WD with CDL, would end up making it a part time arrangement. Maintaining constant 4WD with CDL makes it a lot harder.
Cheers
Slunnie

Discovery TD5, Landy IIa V8 ute.
Posts: 33
Joined: Sun Mar 25, 2007 1:43 pm
Location: Ferny Creek

cdl

Post by Geoffro »

Hi, I just thought I'd drag out this old thread to see if anyone has come up with a manually locking cdl for the p38 yet?
I am looking at buying one but do not want the vc as I have heard it will not lock up with larger tyres.

Geoff
Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest