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Old 12-05-2017, 09:20 PM   #281
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Did a few things today-

The Scotch-Brite Roloc Brake Hub Cleaning Disc Kit that I ordered came in so I used it to clean the hubs and the discs so that they were free of corrosion that might throw off the runout-



It did an excellent job!

I swapped the rotors and rotated them around their hub and found good points to set the rotors that are within the runout specs.

I also applied the decals today. I should have trimmed the decal backing so that the bottom edge of the decal was even with the edge, would have been easier to align...

I used tape to create a straight edge for reference-



It came out ok...I may order another set from the ebay vendor (only $14.00 shipped) and move them up closer to the factory decals.



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Old 12-05-2017, 09:30 PM   #282
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.

You should have used "Adventurous" just to confuse the heck out of everybody.

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Old 12-05-2017, 09:41 PM   #283
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It will probably confuse Roadtrekies anyway...
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Old 12-06-2017, 08:36 PM   #284
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Today I moved the axle from the saw horses to the motorcycle lift to see if it would be a good solution for the installation.

Picked it up-



Sat it on the lift-



and moved it outside. Here it's lifted up to the maximum height-





Installation will be soon if the weather holds.
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Old 12-06-2017, 09:09 PM   #285
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Looking good !
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Old 12-09-2017, 04:08 AM   #286
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I installed the differential today.

After getting the Roadtrek up on the 6 ton jackstands (on the frame) I removed the wheels and began removing connected items like the shocks, parking brake cables, Air Lift airbags, and the brakes. Here is one caliper tied up-



The brake pads looked new (I compared them to a new set I had planned on installing) so I reused them.

I marked the driveshaft and the yoke on the differential as they are match balanced and the yoke will migrate to the new axle. The lowered driveshaft-



Then I lowered the Dana 60 on the motorcycle lift and rolled it out-



A few comparison shots- the Dana goes onto the blocks, the Dana 70 onto the lift-





Getting the pinion nut loose was easy on the 60 but an absolute bear on the Dana 70. I ended up cutting grooves in the nut and using an air chisle to break it free..it's going to hang on the wall in the garage!

Here's the Roadtrek 210 awaiting it's new rear end-



Installation was a piece of cake. My neighbor came over and helped me get it lined up, a relatively easy procedure even with the lift blocks.

In but shocks and other stuff to be hooked back up-



Brakes & 2 inch steel wheel spacers installed-



everything hooked up-



Tomorrow I finish the job - install the wheels, adjust the parking brake, install the anti sway bar and check the lube level once back on the ground.

Took a pic when I was all done-



That's the Dana 60 on the right - it's covered in a tarp and is going on Craigslist tomorrow.
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Old 12-09-2017, 04:01 PM   #287
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It will be very interesting to see what the 3.73 gears do to your shifting patterns, particularly highway downshifts. The 3.73 vs 4.10 ratio, plus an about an inch of tire diameter increase will make your setup about 1/2 gear higher for fourth gear. I would guess you will get noticeably earlier downshifting in from fourth to third. Mileage will also be interesting, as it may get better from the higher gear or lower because of the more often downshifing. You may also find the torque converter not locking as often because it is based on throttle position and the higher gear will likely require somewhat more throttle than stock. Shiftpoints going up are also based on throttle position and will also go up somewhat, I think.
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Old 12-09-2017, 04:26 PM   #288
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Quote:
Originally Posted by booster View Post
It will be very interesting to see what the 3.73 gears do to your shifting patterns, particularly highway downshifts. The 3.73 vs 4.10 ratio, plus an about an inch of tire diameter increase will make your setup about 1/2 gear higher for fourth gear. I would guess you will get noticeably earlier downshifting in from fourth to third. Mileage will also be interesting, as it may get better from the higher gear or lower because of the more often downshifing. You may also find the torque converter not locking as often because it is based on throttle position and the higher gear will likely require somewhat more throttle than stock. Shiftpoints going up are also based on throttle position and will also go up somewhat, I think.
I'll let you know how it drives this afternoon- heading outside right now to finish it up.
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Old 12-09-2017, 10:46 PM   #289
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Finished up the rear axle install this morning.

Adjusted the parking brakes shoes and then installed the 2 inch steel spacers-



Up close & personal-



Then I installed the anti sway bar -



I'm going to look for a couple of 2 - 3 inch extensions for the verticle rods- that will rotate the bar ends down & away from the exhaust on the right side.

Here is a good side view looking at the rear of the differential and the clearance with the Onan 2800 genset & the anti sway bar-



Installed the wheels-



Then the caps and lowered it off of the jack stands and checked the oil level.

Took it out for a test drive- into the mountains via I-70 and then up over Squaw Pass from Idaho Springs to Evergreen to evaluate the handling as well as the traction provided by the Powr-Lok limited slip. I found that the 3.73 gearing was fine at a level speed as well as in the climbs into the mountains on the interstate.

Stopped at the summit of Squaw Pass-



and drove it on some packed snow & ice-



I did some hard acceleration runs from a stop on the snow and it just dug in and drove straight ahead so the limited slip seems to working nicely.
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Old 12-09-2017, 11:09 PM   #290
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Booster, some RPM numbers at 65 mph-

EDIT - Red is incorrect

Original tire size

245- 75R-16 - 4.10 gears = 2992 rpm

New wheels & tires

275-70R-17 - 4.10 gears = 2,805 rpm
275-70R-17 - 3.73 gears = 2,546 rpm


Correct info GREEN

Original tire size

245-75R-16 (30.5 diam) - 4.10 gears = 2202 rpm

New wheels & tires

275-70R-17 (32.2 diam) - 4.10 gears = 2,086 rpm
275-70R-17 (32.2 diam) - 3.73 gears = 1,897 rpm


So I'm sure that the gas mileage will improve overall, that's something I will check on it's 1st trip.

Also, I'd like to publicly thank Booster for all of his help during this axle upgrade. He was quick to answer my questions in this thread as well as in private messages-

THANKS BOOSTER!

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