Manuel locking hubs (14 Viewers)
- Thread starter JOH75N
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Yes. With the full time 4WD transfer case, you would need to lock the center diff to move.
I don't think you'd see a significant fuel savings. Everything would still be fully powered. (Front drive shaft, diff, and axles. The tires would still get power, just from the road, as the rear tires shove the truck along.) I don't see any benefit, and of course the obvious downside of not having all wheel drive traction.
I don't think you'd see a significant fuel savings. Everything would still be fully powered. (Front drive shaft, diff, and axles. The tires would still get power, just from the road, as the rear tires shove the truck along.) I don't see any benefit, and of course the obvious downside of not having all wheel drive traction.
- Thread starter
- #3
I could do with new hubs anyway and the Manuel ones are the same price I'll maybe try them experiment a bit one tank with them locked next with open and so on ! I don't live in a place where I need a 4x4 only if I actually to go off road but sadly that usually ends with a chat with the local police here in Scotland
I've looked into it as well, still on the fence. You'll lose your ABS but there will be less wear and tear on your front axle. MPG are 1, maybe 2 better.
There is a method to mod the transfer case to make your full time 80 part time. Been discussed many times on the forum. You could try a search to find the old threads.
Here's a link to marks4wd:
http://www.marks4wd.com/mfk1210-80hd.html
Here's a link to marks4wd:
http://www.marks4wd.com/mfk1210-80hd.html
If it actually improves MPG by 5-10% as suggested on marks4wd, I suppose it would pay for the kit if you drive enough. Apparently I'm missing something, and my post (above) wasn't as correct as I'd thought.
I am interested in the manual hubs for an 80 series axle as well, but for different reasons. My 80 axle is under my fj40 and I would like to have the locking hubs to keep the driveshaft from turning all the time. Is this a bolt on process or is there more to it than that?
What year 80 series did you pull the front axle from?
Here's a link to a thread discussing the topic:
Aisin manual hub issue
Here's a link to a thread discussing the topic:
Aisin manual hub issue
I think manual hubs on a full-time 4WD would be just about useless because everything that was moving before, still moves.
In contrast, for a part-time 4WD, with manual locking hubs the whole front drivetrain doesn't move. Without manual hubs, the front drivetrain spins up (but is not powered), so you're removing all the mechanical losses up front except for the wheel bearings.
In contrast, for a part-time 4WD, with manual locking hubs the whole front drivetrain doesn't move. Without manual hubs, the front drivetrain spins up (but is not powered), so you're removing all the mechanical losses up front except for the wheel bearings.
Thanks for the link. I am not sure what year model the 80 axles are. Is there a way to tell without dismantaling the axle?
The drive plate or flange on the hub is shorter in the earlier models to match up with the shorter CV joint. Take a look at the flanges to see if they both are the same part then take a photo of the flange and hub (no need to dismantle) and post it up.
I know you said no need to dismantle but they were already apart. I hope these are the pics you need.
These trucks seem to drive terribly in 2wd. I experimented briefly on a long road trip to UT while I was still living in Iowa. The MPG gains were minimal, and I didn't like how the truck handled.
There are other reasons to unlock the front hubs which hold more merit, but MPG should not be one of them.
There are other reasons to unlock the front hubs which hold more merit, but MPG should not be one of them.
Guys, this thread resurrection by NC40 starts at post #7, he is not trying to convert an 80 series to part-time, he has a 40 series with 80 series axles underneath. So he already has a part-time transfer case and just wants to install manual hubs on the 80 axles.
Tapage
Club 4X4 Panamá
Yes, I suppose it would be. Going from being used to the full time 4wd handling to 2wd handling was something I didn't like, but if you're already used to it, it may not be a big issue.
alia176
SILVER Star
agreed, this is very subjective. If you're going part time, which shocks you have is a big contributor toward how the front end goes up/down during accel from stop. I've been running part time since '05 so I'm used to it. But, others who test drive my rig didn't complain about the handling or the behavior.
inkpot
SILVER Star
May need to measure the depth of the splines so we can tell if they are early or later version. It's only a 1/4" or so.
My P/T 80 cruises smooth and vib free at 95 anyone who tells you the same with a full time lifted 80 is lying or just to dumb to know any difference. Gas mileage increase with P/T, maybe slightly but that is not a reason to do it.
