Thread Tools Display Modes
Old 10-17-2016, 03:24 AM   #1
New Member
Join Date: Aug 2016
Location: Florence Oregon
Posts: 6
Year: 2000
Coachwork: Amtran
Chassis: RE 35'
Engine: T444E
Rated Cap: 72 passenger
T444E safe operating RPMs at highway speeds

How many RPMs can I safely run with a T444E on a freeway? My 35' 2000 International RE with a T444E is running around 2500 RPMs at 58 to 60 MPH. What are the safe RPMs for the T444E ? How many RMPs are these engines designed to run at highways speeds? I would like to be able to cruise between 65 and 70 on the freeway. Do I need to have the rear end ratios changed? Or can the T444E handle 3000 RPMs at freeway speeds?
steveningham is offline   Reply With Quote
Old 10-17-2016, 04:47 AM   #2
Bus Crazy
Join Date: Jul 2011
Location: Winlcok, WA
Posts: 1,250
2500-2600 RPM's is about as tight as I would want to turn one of those on a regular basis.

3000 RPM's is really asking for trouble IMHO.
cowlitzcoach is offline   Reply With Quote
Old 10-17-2016, 08:05 AM   #3
Bus Geek
Join Date: May 2009
Location: Columbus Ohio
Posts: 3,872
Year: 1991
Coachwork: Carpenter
Chassis: International S3800
Engine: DT360
Rated Cap: 7 Row Handicap
ther T-444E should be limited to 2700 from the factory... maybe the 210 HP version is 3000? I do know they max out their power and torque curve at 2300.. which is a good optimal balance of economy and power there...

the bottom end on these things can take more.. ford ran them up to 3200, but the fords i believe have a slightly thicker head gasket than the IHC so you can run higher RPM wothout slapping a piston at the top of the cylinder.

even with 210 HP, i cant imagine being able to have enough power to run a big heavy RE bus at 65-70 with a T-444E..

when you regear you also lose torque at the tires... a good test is does your bus want to slow down any on mild hills? if you are floored and drop speed a little now on hills you would drop speed even more if you re-geared the rear...

cadillackid is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Virginia Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 07:59 AM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.