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Old 01-20-2018, 08:52 AM   #1011
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one last thing about plowin-down-white-lines..

I decided to try it.. i ran my bus at 70-72 for 200 hundred miles .. the bus didnt mind in the least.. in fact in the hills it probably did better because my turbo was spooled a little higher when it dropped into 5th from 6th. but the drive was totally Not near as relaxing..

at 65 you still pass some traffic.. but you flow right in on the freeway for the most part.. hang out in the right lane, pass an occasional slow truck or old lady in a buick..

at 70 MPH it was a constant shuffle in the traffic, lots of lane changes. and running up on people.. its really amazing that even in 70 MPH zones how many people drive at or just below 70.. so now the drive got completely active and in motion..

I was much more relaxed and enjoying the drive when I went back to 65..

-Christopher
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Old 01-20-2018, 08:58 AM   #1012
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Originally Posted by cadillackid View Post
one last thing about plowin-down-white-lines..

I decided to try it.. i ran my bus at 70-72 for 200 hundred miles .. the bus didnt mind in the least.. in fact in the hills it probably did better because my turbo was spooled a little higher when it dropped into 5th from 6th. but the drive was totally Not near as relaxing..

at 65 you still pass some traffic.. but you flow right in on the freeway for the most part.. hang out in the right lane, pass an occasional slow truck or old lady in a buick..

at 70 MPH it was a constant shuffle in the traffic, lots of lane changes. and running up on people.. its really amazing that even in 70 MPH zones how many people drive at or just below 70.. so now the drive got completely active and in motion..

I was much more relaxed and enjoying the drive when I went back to 65..

-Christopher


That makes a lot of sense and one of the reasons I've enjoyed it at 65. Thanks for the reminder!


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Old 01-20-2018, 09:32 AM   #1013
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At 65, your engine will be at around 2500 rpm. For engine longevity you may want to consider 60 to be your max cruising speed. That would be at 2300rpm +/-.

Depending on how long you plan to keep it, and how many interstate miles you plan on doing you may want to consider a gear swap in the rear. A 5.29 like I've got would put you at about 70 mph at 2300 rpm.
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Old 01-20-2018, 10:10 AM   #1014
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must be standard design? my bus pre allison 1000 was maxxing right shy of 70..

seems like your DT466 shorty. with the 245 tires on it. would do similar?

and sandi's bus is right shy of 70..

maybe is what navistar used as their "top speed" design for a school bus chassis?

we know they make em factory with less speed.. interested to know if in that same era they made them much faster or not.

in the cooler weather my 444E did fine. at 2500 RPM, but when it got over 80 or so then my temp would start to creep.. or it got annoying todrive because the fan just screamed all the time..

-Christopher
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Old 01-20-2018, 11:39 AM   #1015
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Iíll pay more attention to the RPMs. It seems to hover at 1800-2000 with the pedal to the metal at 65.
The fan kicks on at 120(?) and is consistent.


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Old 01-20-2018, 11:47 AM   #1016
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65 at 1800-2000 rpm is outstanding. You must have near optimal gearing and tire size on that rig. Excellent!
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Old 01-20-2018, 12:21 PM   #1017
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If you are curious about the difference in gear ratios and being good off the line do a quick Google search for the difference between quick and fast when it comes to vehicle performance.


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Old 01-20-2018, 03:32 PM   #1018
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Iíll pay more attention to the RPMs. It seems to hover at 1800-2000 with the pedal to the metal at 65.
The fan kicks on at 120(?) and is consistent.


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Something isn't adding up.
Your tires are about 39". Your OD gear is .74, and your rear axle ratio is 6.17.
Put those numbers into any gear/speed calculator and you're near the engine's limits at 65.
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Old 01-20-2018, 03:48 PM   #1019
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Quote:
Originally Posted by WanderWoman View Post
Iíll pay more attention to the RPMs. It seems to hover at 1800-2000 with the pedal to the metal at 65.
The fan kicks on at 120(?) and is consistent.


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we need to re-look at things then because the data in the computer is sure not condusive to 1800-2000 at 65..

we didnt drive it, or i couldve seen the RPM via the computer.. I dont trust these navistar dash panels for one second. 120 is REALLY cold for the fan to kick on.. 220 is more likely but a bit higher than I like to see with a 444E, AGAIN, we need to drive it sometime when I have my computer connected to get the real story..

if it was re-geared then the speedometer would be off as the computer is programmed for 6.17 rear and the number of tire revs per mile. says that the speedo would be reading very incorrectly if you are tached at 1800-2000.

where are you taking it once you get back from your trip?
-Christopher
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Old 01-20-2018, 07:02 PM   #1020
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Taking it home mid-week. I live near West Palm. Maybe we can go for a spin!


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