In a nutshell, wear is not a valid argument when discussing the pros and cons between FT or PT transmissions
When your front axles are chromoly part time is better for the axles.
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
In a nutshell, wear is not a valid argument when discussing the pros and cons between FT or PT transmissions
When your front axles are chromoly part time is better for the axles.
Agreed. One of the reasons I didn't go chromoly is due to all the reports that they wear much faster and I don't wheel that hard. Running chromoly axles it makes sense to go part time.When your front axles are chromoly part time is better for the axles.
1/4 City
I think the biggest wear item is the hub flanges on early models
True as the part-time and full-time transfer cases are different lengths. I thought the front shaft is the same though - just the back one is different (?) because the full-time one has the viscous coupling section which the part-time one doesn't. Could be wrong.Worth adding to this that the front and rear prop shafts are also different lengths, so you need to swap them over too.
You will see about 1-2 mpg increase when road tripping a 2wd cruiser vs a full time 4wd version.
Yea it's kinda surprising but anything more than 5-10% city driving and it seems as though the percentage of highway driving isn't enough to balance out the gains.
If you have lower speed highways (55mph-65mph) you'll see better numbers than if you are blowing through Utah at 80.
Yea it's kinda surprising but anything more than 5-10% city driving and it seems as though the percentage of highway driving isn't enough to balance out the gains.
If you have lower speed highways (55mph-65mph) you'll see better numbers than if you are blowing through Utah at 80.
You will see about 1-2 mpg increase when road tripping a 2wd cruiser vs a full time 4wd version.
I’m talking 2 tanks of gas back to back (500 miles) of strictly highway driving. Idk bout you guys but an extra 25-50 miles per tank is a benefit on long road trips.
Plus, if you’re running over 2” of lift you’ll need a double cardan driveshaft to get rid of vibrations (and even with a DC it’s not perfect I can tell you that). double Cardan driveshafts aren’t cheap, so the cost of part timing instead of double cardaning becomes more intriguing. And I’m not even talking about how setting an axle up for a DC driveshaft negatively affects your caster angle, requiring even more serious modifications to correct.
Those who talk about how the handling is worse in 2wd than 4wd really need to get some high performance driver training. Nearly any vehicle driving the front wheels (either as FWD or 4wd) always has worse dynamics than one that just drives the rears. If you think otherwise then you need some seat time in good RWD vehicles. The 80 in 2wd feels much more connected to the road, I don’t have torque steer through the wheel, it’s overall more natural.
So yea there are benefits to part timing
Months of daily driving burning 120-180 litres per week, traveling basically the same journey, before and after doesn't agree with your "2 tanks back to back" analysis
Lol I actually have driven my 80 with the rear shaft off (using the front only) for a while about 5 yrs ago when original rear diff centre went bad and had no option but to run as a front wheel drive 80 series for about a month. Works fine. No CDL bs on mine - just lock it in 4wd high with front hubs engaged and off she goes with zero drive connection to the rear diff flange. Not recommended for long term as 80's are not engineered to operate as front wheel drive.Not experience driving a full-time 80 with front shaft out, and hub flanges off, so residential identical to part time model.
Over 6 months of daily driving, 120-150 miles daily, 3/4 highway, 1/4 City, and using a fuel tracking app before and during that period.
No measurable difference.
Yup, been there, done that tooLol I actually have driven my 80 with the rear shaft off (using the front only) for a while about 5 yrs ago when original rear diff centre went bad and had no option but to run as a front wheel drive 80 series for about a month. Works fine. No CDL bs on mine - just lock it in 4wd high with front hubs engaged and off she goes with zero drive connection to the rear diff flange. Not recommended for long term as 80's are not engineered to operate as front wheel drive.
I drove my 91 with and for 5 years and I have been driving my 97 with part time for 2 years. I can tell zero difference in the handling between the two rigs on pavement. They are both slow and cumbersome.
Offroad the part time rig is easier to drift and a little funner to mob in.
Just blew a front inner axle seal tuesday evening. I can still daily drive my rig until I get parts and get it fixed because the rig is part time and nothing in the front end will move when I am commuting to work for the next few days.
Another win for the part time kit.