Dynatrac lock out hubs installed

[JAlderman]

If you're looking for mileage gains this is it. I figure 2 mpg from the hub conversion, 2 mpg from the rokk tech sensor.



I just returned from a 3500 mile trip, I was getting 20. 2 mpg hand calculated running 75 to 80 mph empty. I was lucky to get 15 mpg before the mods.



I did the hub conversion, rokk tech crank sensor, muffler delete pipe, and Big Honkin Air filter all at once including the gauges. So I have no baseline to compare, but at 80 mph sea level egt was 600 deg, boost 8 psi, and transmission 130 deg.

 

[j.m.mcfly]

how much was the kit for lockout hubs

 

[JAlderman]

I got the kit during the group buy, I believe the damage was 1630. 00 to my door.

 

[jwduke]

Well at $3. 25 a gallon for fuel, they should pay for them selves in 100,000 miles. But it has to improve drivability by 100% too. I wish I had the buck to do it during the group buy. Thanks for the update!

 

[JStieger]

I got the kit during the group buy, I believe the damage was 1630. 00 to my door.

Pics?



How far do the hubs stick out? And is the front tread width / tracking still the same?



Thanks!

 

[JAlderman]

How far do the hubs stick out? And is the front tread width / tracking still the same?

The hubs do stick out past the stock tire and wheel, but only by a few inches, at first it bothered me but its growing on me now.



I'll check the track width tommorrow at work, but during the entire drive alignment and tracking were dead on.



I'll have pics up sometime tommorrow.

Well at $3. 25 a gallon for fuel, they should pay for them selves in 100,000 miles. But it has to improve drivability by 100% too. I wish I had the buck to do it during the group buy. Thanks for the update

It's only 2. 99 a gallon in Virginia Beach, driveability is unreal there is alot of free'd up rolling weight. The biggest difference in driveability that caught me by surprise was stop and go driving, acceleration and braking.



I'm trying to run out this current tank to see what mileage improvements have been gained in town.

 

[JAlderman]

As promised a picture of the installed lock out hubs, more pics are in my readers rig gallery

 

[Matt400]

Now you have me wondering something.

Originally when pics were posted about this kit a hub was shown that slipped over the lug studs similar to Ford Explorers & Rangers. But when I took a look at the kit picture you posted it doesn't appear to be like that.



So. . if the same rotor & caliper bracket are used then I would assume this kit does not move the wheel any farther away from the ball joints correct?

The kit looks neat and I envy you being able to choose 2wd low on pavement. Shorter hubs would have been nicer though.

 

[CSilkowski]

JAlderman,



Have you considered taking a hole saw to your original hub cap, similar to the ford hub caps? Don't know if it's doable but I'm going to try it this weekend.

 

[JAlderman]

So. . if the same rotor & caliper bracket are used then I would assume this kit does not move the wheel any farther away from the ball joints correct?

The kit does not move the wheel any farther away, I did take a picture and posted it in my gallery of pictures to show that. The hubs kinda of grow on ya after awhile.

Have you considered taking a hole saw to your original hub cap, similar to the ford hub caps? Don't know if it's doable but I'm going to try it this weekend.

I found a pic on The Diesel Stop of the conversion with the hub sticking out of the cap, after I saw that I'll buy longer chrome lug nuts. I think it makes it look worse.

 

[Matt400]

The kit does not move the wheel any farther away,

Thats good cuz aftermarket wheels already do that somewhat. I would consider this kit but would like to see it for less money.

 

[JAlderman]

I don't think the pricing will ever drop, I waited for the super duty kits to drop and they never did, thats why I jumped on these now.

 

[Matt400]

I would be curious to know how tall that hub is from the wheel mounting flange.

 

[betterthanstock]

JAlderman, let us know how the transfer case is holding up. I expressed concern that our T-case is not the Ferd model (it's 271-D, or 273-D as in Dodge).

It lacks synchronizers, and possibly an adequate bearing on the chain sprocket on the main shaft. It was designed to have both shafts turning all the time. I ran mine for 1000 miles without the front driveshaft and got over 1 mpg increase, but I replaced the shaft for now.

Also,you can cut the cost of hubs in half by only installing one. The satellite gears will freewheel, turning the disconnected axle in the opposite direction, just like the second gen trucks with the central axle disconnect. Again, it's a matter of what bearings are on those satellite gears. You will achieve about 95% of the MPG gain, since the main culprit is that chain inside the transfer case turning at about 3000 RPM at freeway speeds. (It's your engine RPM divided by the overdrive ratio for your transmission)

 

[JAlderman]

I would be curious to know how tall that hub is from the wheel mounting flange.

I can get that measurement this weekend for you.

JAlderman, let us know how the transfer case is holding up. I expressed concern that our T-case is not the Ferd model (it's 271-D, or 273-D as in Dodge).

I've only used my transfer case once since the install and everything shifted and worked just like my super duty. Nothing unusual yet.

It lacks synchronizers, and possibly an adequate bearing on the chain sprocket on the main shaft. It was designed to have both shafts turning all the time.

I've never tried to shift one while I was moving, things this big don't like to suddenly start and stop. So the lack of synchronizers don't bother me. Unless you have a parts break down in front of you the 2 transfer cases should be identical, except for the input housing mated to the transmission. You have some good points about the lack of parts inside these cases, I'll have to do some looking around to see if I can find a parts break down of both versions.

 

[Matt400]

I can get that measurement this weekend for you.

Don't pull the wheel just for me, measurement from the wheel face to the end of hub will work, I can then add in the thickness of the wheel you have cuz I have a set of those in my garage. Thanks

 

[MR.K]

What is the ROKK sensor ... where do you get one?

 

[Matt400]

What is the ROKK sensor ... where do you get one?

Check here-

http://www.rokktech.com/_mgxroot/page_10437.html

 

[JAlderman]

Matt here you go, if you need a better picture I'll have to wait till daylight.

It measures 5 1/2" from the wheel face. If you're thinking Dana 60 you would be right. The 2 major differences are the outer stub shafts and the spindle, I would love to know how close the two axles really are I just don't have a Dana 60 lying around to check.

 

[abledog]

The Dyna 60 Hubs on my 1st gen measure 4 7/8" from the wheel(alm mag) face and 5 7/8 from the wheel mounting flange of the hub.

Terry