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Old 02-05-2003, 07:55 AM
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Post How much extra ware on 4 x 4 front hubs ?

Sorry, this is not related to rodding per se but... since you folks are so smart.

I have an '88 Bronco ( Full size ) with a 302/3 sp auto and manual locking front hubs. How much extra wear will result by leaving the hubs locked and driving with the transfer case in 2 or 4 wd high as needed instead of getting out and locking/unlocking the hubs?

This is just for in town as we have tons of snow and our side streets are messy to say the least.

Thanks.

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Old 02-05-2003, 08:37 AM
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I think you will find that a fully locked transfer case and locked in posi front diff will steer terribly around town, just locking the hubs adds a lot of drag especially when turning. It is not so much a question of wear but one of being able to drive it safely, full time four wheel drives take a different driving approach and can be challengine to people who have trouble sliding a vehicle around.

I once tried this with my wife and she just didn't care for the banzai driving style you have to adopt when the roads are solid ice with full time four wheel drive and posi front and rear. I just taught her how to lock the hubs if needed, she was more comfortable and the truck was much easier to drive.
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Old 02-05-2003, 08:56 AM
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Thanks 4Jaw.. It seems to steer ok with the hubs locked in town, mind you there is lots of snow now.
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Old 02-05-2003, 09:02 AM
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I had a Chevy Blazer, and I am sure they ae very different but I was told not to get on the highway and run highway speeds in 4 wheel drive, it was reserved for lower in town speeds to keep me from getting stuck in the snow, not for running 65 in 4 wheel drive. That is probably where the excessive wear would come from.


Todd <img src="confused.gif" border="0">
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Old 02-05-2003, 09:40 AM
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[quote]Originally posted by tm454:
<strong> me from getting stuck in the snow, not for running 65 in 4 wheel drive. That is probably where the excessive wear would come from.


Todd </strong><hr></blockquote>


Thanks Todd. It always puzzled me why you would want to shift into 4wd at high speeds. If you are going 50MPH you obviously are not stuck.
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Old 02-05-2003, 12:35 PM
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I have a 92 GMC 4X4 1 ton and when they say " shift on the fly" they mean it. I pulled mine in at 140 KM/H without a problem. It is not always a matter of using it when you are stuck, but to prevent you from getting stuck. When I Worked in James Bay for a few years and drove the Trans-Labradore HWY, it is 380 KM in the bush with no stops in between. If you ran into trouble, it could be days before you are found. So you drive in 4X4 at 100 KM/H and if you get off the beaten trail, you put the pedal to the floor and use the momentum you already have to get you out. No time to grab the 4X4 lever, or wait for the front-end to engage. <img src="graemlins/sweat.gif" border="0" alt="[sweat]" />
But those where xtreme conditions.
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Old 02-05-2003, 02:08 PM
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you can leave them engauged as long as theres snow on the ground your ok. if there locked while driving on dry pavement you will notice wheel hop on tight turns there will be more drag and lower gas milage. as for not using 4wheel on the highway if the factory didn't want you to do it they would plaster stickers all over the place telling you not to. my blazer is an 89 w/manual hubs i don't enguage them unless i need them. gas is to expensive as it is
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Old 02-05-2003, 03:12 PM
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I have a 91 F150 with manual locking hubs. I leave my hubs locked all the time for days at a time. This helps to keep the U-joints in the axle shafts from binding up, which is a common problem on the older Fords. Other manufactures that used CV joints in their front shafts didn't have this problem. As long as my transfer case isn't in 4WD I have no problems with the hubs locked. I only shift to 4WD if the roads are bad cause they do turn rough in 4WD with the hubs locked. Obviously from spring to fall they pretty much stay unlocked (unless I'm off-road) but since the snow started falling this winter here in good old Maine they have been locked almost all the time. Two other guys I work with who also have Fords with the same set-up leave theirs locked also.
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Old 02-07-2003, 10:32 AM
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leaving hubs locked will give you worse gas milage because of the drag. DO NOT engage 4x4 unless on dirt or wet pavement if you can help it. when you hit snow you should be able to go from 2 hi to 4 hi on the fly but might have to put the tranny in N to do it. you should be able to go from 4 hi back to 2 hi as easily but it will be alot easier to do if you are still on snow when you try, otherwise you may have to pull over. ford 'r chebby, dont matter. t'fer cases kinda have a mind of their own as to how easily they will shift on the fly.
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Old 02-07-2003, 04:33 PM
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[quote]leaving hubs locked will give you worse gas milage because of the drag. <hr></blockquote>

You're right about that. Fortunately I work about 10 minutes from my house (including a stop at the Burger King drivethrough for breakfast ). Not being too concerned about gas I find it easier to just leave the hubs locked so I'm always ready for 4WD if I need it, and I've needed it quite a bit this winter here in Maine. Obviously if you're in an environment where you don't need 4WD too often unlock them. But with the weather we have here and the fact that I really only use the truck locally it's easier to just leave the hubs locked. At least I know with the hubs locked the u-joints being rotated and the gear oil in the front differential isn't just laying stagnant as the gears in the differential are turning. I guess each person must look at his own situation. Up here I could walk through the parking lot at the mall and find most hubs locked but the same parking lot in Jersey (where used to live) most would probably be unlocked.
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Old 02-23-2003, 07:55 AM
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[quote]Originally posted by xtreme off-road:
<strong>I have a 92 GMC 4X4 1 ton and when they say " shift on the fly" they mean it. I pulled mine in at 140 KM/H without a problem. It is not always a matter of using it when you are stuck, but to prevent you from getting stuck. When I Worked in James Bay for a few years and drove the Trans-Labradore HWY, it is 380 KM in the bush with no stops in between. If you ran into trouble, it could be days before you are found. So you drive in 4X4 at 100 KM/H and if you get off the beaten trail, you put the pedal to the floor and use the momentum you already have to get you out. No time to grab the 4X4 lever, or wait for the front-end to engage. <img src="graemlins/sweat.gif" border="0" alt="[sweat]" />
But those where xtreme conditions.</strong><hr></blockquote>

My brother had a 79? Dodge 4 x 4 and if you put it in 4 low all 4 tires spun. You never got stuck in that truck. If they could make a good ( stock ) 4 wheel drivesystem in the 70's
why the heck can't or maybe why won't they do it now.

BTW , ever seen a truck that hit a tree at 140?
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Old 02-23-2003, 08:21 AM
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you can do what i do leave the pass side locked in on the older trucks, saves time and if u slide in to a ditch you may not be able to lock it in! When this happens to me i am in the ditch on the pass side of the road! well most of the time anyway.
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