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Old 11-05-2018, 07:15 PM   #11
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Join Date: Jul 2018
Location: Poteet, Tx
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Year: 1993
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Chassis: 3800
Engine: DTA 360
Rated Cap: 25,500 lbs
Christopher, Hows the mt643 working? Did you have to put a thinner spacer between flywheel and flexplate? Have you noticed a improvement in mileage?
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Ongoing project of maintenance and replacement of things in and on the Comfort Bus https://www.skoolie.net/forums/f9/up...bus-24772.html
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Old 11-05-2018, 10:28 PM   #12
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Location: Columbus Ohio
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Year: 1991
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Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
it works great.. i havent driven the bus alot yet but it surely has more pep and seems to use less fuel.. ( its also season where I have the windows closed and the AirCon is not in use)..



I did a quick and dirty writeup on one of these threads about the pieces needed to swap a 643 in.. you use a new flexplate, remove the old flexplate and the spacer.. put on the new flexplate.. get shorter bolts... and use the old washer-ring, and tighten down.. and you remove the SAE2 to SAE3 ring. the driveshaft needs shortened. I had to drill new holes in my shift bracket and make an extender cable for my speed sensor .. other than being Heavy it wasnt a bad swap to do.. easier than the AT545 to allison 1000 swap i did in the red bus last year..



I still need to finish fixing the floor area around the doghouse where the chassis and body were joined incorrectly.. ive got the metal and wood redone and mounted / sealed.. I need to make a couple pieces and maybe a custom track for my doghouse to seal up nice against.. which should help my Dashboard AirCon keep me cooler


my work is keeping me quite busy .
-Christopher
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Old 11-10-2018, 11:08 PM   #13
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Just had oil changed on my dt 466 $200. Filters and lube. International engines are notorious for rear main seals failing around 140,000 miles- Iíve replaced three rear mains around that time with three different navistar trucks... donít skimp on cheap oil! Those engines will mess up with cheap oil.
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Old 11-25-2018, 02:36 PM   #14
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More updates on the C,B,

The contractor has removed the remainder seats, forward crash barriers and all flooring that was wood or rubber. Drivers seat included. He has scraped up loose rust, power washed the floor and applied rust converter. Recently he has painted the floor with a black paint. He says the easy part is laying new plywood. I found some black 7.5ft x 14ft polyvinyl mats on ebay. Using Roberts 2310 adheasive from home depo $90. Ryder fleet products has 1inch x 50ft Insulone heater hose for about a $1 a foot. My aux heater coolant lines are no longer flexible.

Possibly today, The contractor is removing the roof escape hatches and putting in the steel sheet I got. That should take care of 90% of the leaks. I can do the windows later.

Waiting on ordered materials. Plywood is basic stuff. Getting a vapor barrier (from ebay) laid down before the plywood. That should curtail the wood rotting issue for a few days.
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Ongoing project of maintenance and replacement of things in and on the Comfort Bus https://www.skoolie.net/forums/f9/up...bus-24772.html
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Old 11-26-2018, 03:45 PM   #15
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Just created and added pictures to a album. Enjoy!
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Old 12-07-2018, 10:43 AM   #16
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Join Date: Jul 2018
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The plywood is down . . mostly. Got materials and adhesive delivered to the contractor.

The escape hatches have been removed and the holes are sealed. Contractor used rivets to secure the outer sheet metal.
Still need to bolt down the new/used National air ride seat, front crash barriers and the A-tracks for the wheelchair tie-downs. It's closer to being done than it was a month ago.
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Old 12-15-2018, 09:13 AM   #17
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Join Date: Jul 2018
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Headed to the contractors place this afternoon to deliver a new National Seat seat cushion and attaching hardware. Perhaps there will be some progress to take pictures of. Also talking to this same contractor about swapping the rear diff 3rd member and trans from AT545 to MT643.
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The price of freedom is eternal vigilance. - Thomas Jefferson
Ongoing project of maintenance and replacement of things in and on the Comfort Bus https://www.skoolie.net/forums/f9/up...bus-24772.html
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Old 12-16-2018, 05:03 PM   #18
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The contractor has the first section of the black diamond plate polyvinyl material down. It looks good, far better than the old flooring.



He has also tested the low air warning buzzer and light. Both function fine.


Shouldn't be too much longer before the bus is back home.
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Old 12-31-2018, 08:36 AM   #19
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Join Date: Jul 2018
Location: Poteet, Tx
Posts: 99
Year: 1993
Coachwork: International - AmTran
Chassis: 3800
Engine: DTA 360
Rated Cap: 25,500 lbs
Got the front crash barriers bolted back in, doghouse installed, two passenger seats on drivers side and various sheet metal covers for aux heater coolant lines.

The "To Do" is getting smaller every day.

Contractor flushed out the aux heater until it ran clear. Said it had some brown stuff in it slowing down the flow but it's clear now. I got 2 gallons of full strength coolant to top it off.

Old drivers seat is laying on the aux heater. The new(used) air ride National Seat with new fabric seat cushion should make longer trips more comfortable.
Still need the wheelchair tie-down strips and the rear of bus plywood and polyvinyl flooring done.

Another leak in the roof was discovered but should be sealed up before I take the bus home.


In all the total cost is higher but extra work was added. The contractor has been amazing in keeping me informed and updated with pictures, which I have shared here along with some I took myself.
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Old 01-27-2019, 09:35 AM   #20
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Engine: DTA 360
Rated Cap: 25,500 lbs
The floor to the Comfort Bus is finally done. If you would like to see it, I have recorded a short video of it and posted it on Youtube
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