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 How much will MPG increase if I switch to manual hubs?
#776591
01/02/07 01:24 AM
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Joined: Jan 2007
Posts: 10
OP
Need a Spot
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Curently have ADD on my 94' 22r 4x4 and the mileage isn't stellar. Something went wrong with the 4x4 and I have to switch the vacuum hoses on the valves to get it to work. Thinking about skipping the diagnosis and converting to manual hubs. Any info or product leads is appreciated, thank you...
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Re: How much will MPG increase if I switch to manual hubs?
[Re: MDMarc]
#776592
01/02/07 02:34 AM
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Joined: Jan 2004
Posts: 24
Need a Spot
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I have used Warn's hubs on my '94 V6 with ADD for many years. I have heard that the OEM manual hubs may be stronger. I do moderate 4 wheeling and haven't had any problems with this setup. I never noticed any significant change in mileage.
I think this setup is better than original since the axles aren't turning all the time, which is easier on the CV joint's and CV boots since I use lowered bumpstops and keep the torsion bars cranked up a little bit.
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Re: How much will MPG increase if I switch to manual hubs?
[Re: MDMarc]
#776593
01/02/07 01:46 PM
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Joined: Oct 2002
Posts: 1,305
Body Damage is Cool
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Re: How much will MPG increase if I switch to manual hubs?
[Re: ZUK]
#776594
01/02/07 04:52 PM
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Joined: Aug 2001
Posts: 5,986
Toyota Section Staffer
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At least not real noticeable. Your CV wear will decrease though.
-Bill
'87 4Runner w/ '96 5VZ-FE, 'Red Chili II'
'97 Taco XtraCab 3RZ-FE, 'BlackBean'
TLCA # 13257, Rising Sun 4x4 Club Land Use Coordinator
"He who stops being better stops being good." -Oliver Cromwell
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Re: How much will MPG increase if I switch to manual hubs?
[Re: aj2]
#776595
01/02/07 05:02 PM
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Joined: Apr 2000
Posts: 4,230
Roll Me Over
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I have used Warn's hubs on my '94 V6 with ADD for many years. I have heard that the OEM manual hubs may be stronger. I do moderate 4 wheeling and haven't had any problems with this setup. I never noticed any significant change in mileage.
I think this setup is better than original since the axles aren't turning all the time, which is easier on the CV joint's and CV boots since I use lowered bumpstops and keep the torsion bars cranked up a little bit. None but a decrease in wear in the moving parts since they are not turning all the time. It is not that the stock hubs are stronger it is the way they are fastened. The Warn hubs do not use the cone washers to aligned them and hold them tight to the wheel hub. Under normal conditions, they are fine, but under heavy wheeling conditions the Warns have a tendency to loosen which causes the studs and locating pins to break .
David Fritzsche
1990 Ex-Cab V-6,5-speed, with a few mods
04.5 CTD Dodge 2500 Ram--Tow Rig
Roseville, CA
"Serenity through Sobriety"
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Re: How much will MPG increase if I switch to manual hubs?
[Re: OOP'S]
#776596
01/02/07 09:39 PM
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Joined: Feb 2001
Posts: 3,935
Roll Me Over
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Depends on the truck, it's condition and how you drive...
Saw a 1-2MPG increase in my 86 auto when I switched. My ex-wife's 4Runner was switched right away with no visible change. Some of the Taco folks claim anywhere from 0-2 mpg.
Brian K. Gallus
I have nothing important to say.
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Re: How much will MPG increase if I switch to manual hubs?
[Re: MDMarc]
#776597
01/03/07 03:26 AM
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Joined: Jan 2004
Posts: 24
Need a Spot
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One other thought - could your poor gas mileage be due (or at least partially due) to a vacuum leak from the ADD system?
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Re: How much will MPG increase if I switch to manual hubs?
[Re: MDMarc]
#776598
01/03/07 03:40 AM
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Joined: Apr 2000
Posts: 4,282
Roll Me Over
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about .00000001 increase.
leo d. 90 4runner, v6, auto, WCOR CitB kit, marlin duals, arb rear, tt front 4.88, blah, blah, blah... Pres. of TEAM IFS! and GETTING OFF 4WD Club member
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Re: How much will MPG increase if I switch to manual hubs?
[Re: MDMarc]
#776599
01/03/07 03:27 PM
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Joined: Nov 2003
Posts: 268
Mudrunner
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Re: How much will MPG increase if I switch to manual hubs?
[Re: MDMarc]
#776600
01/03/07 04:26 PM
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Joined: Oct 2003
Posts: 197
Wheeler
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Change the hubs anyway . Like the Chili dude says , less wear on moving parts , thats a good thing. Go to a yard and pick a pair off an old SA. Just got a set myself for the wifes 95gg and swapped it out for 20$.
85' 4x4 e-cab flatbed 22r carb ((SOLD))
86' 4runner, 22re , "60 buck truck"
95' 4runner, 22re,5sd, last of the good ones
02' Tacoma prerunner, 2.7L, 5spd., 4x4
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