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Old 06-29-2019, 01:35 AM   #1
Skoolie
 
Join Date: Nov 2015
Location: AZ
Posts: 154
Engine: 7.3L Navistar T444e Diesel
Beefing up the T444 Engine

Not sure where else to put this....
Anyway, my bus has the T444e engine with the 195 HP I believe it is. It's the higher one than the 175. Was told I can get it tuned and the limiter removed at International. Also told that, being the 195 hp, it can be tuned to like 210 or something without replacing the turbo. Mechanic said it will make a big difference in power, and that the engine is designed for it.


Does anyone know where to look for parts/accessories to tune up this engine? I don't want crazy stuff that'll blow it up, just keep it reliable and get a little more power on the road.


I saw a thread here where someone mentioned a place that does this and sells the parts, but I can't find it again.


Thanks!
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Old 06-29-2019, 05:27 AM   #2
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Location: E Central Tejas
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Year: 1998
Coachwork: Thomas
Chassis: IH 3800, 8 window
Engine: T444E w/ Spicer 5-speed MT
Rated Cap: I prefer broad-brims hats
I will be following this. Mine has the 175 hp variant, so if you think yours is slow..?
I've considered christening her,
"The Gutless Wander"
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Old 06-29-2019, 06:08 AM   #3
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Year: 1996
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Engine: T444E 7.3L
My bus was a slow turd when I got it. Totally do the horsepower bump! Cadillackid here on the forum bumped mine up to 210 hp and it made a huge difference. I also straight piped the exhaust system and did a EPBV delete........

Straight pipe.........


Horsepower bump......


EBPV delete........


Thunder..........
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Old 06-29-2019, 06:28 AM   #4
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Location: Eustis FLORIDA
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Chris is so awesome! Love that dude!
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Old 06-29-2019, 07:19 AM   #5
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Location: E Central Tejas
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Engine: T444E w/ Spicer 5-speed MT
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He surely is!
A 5 mph improvement may not sound like a whole heaping lot, but when you're on a cross-country trek with a rig doing the canine carpet scrootch, that little bit extra made for worlds of a difference!
Thanx again for the tweak, Christopher. You da man!!!
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Old 06-29-2019, 11:28 AM   #6
Skoolie
 
Join Date: Nov 2015
Location: AZ
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Engine: 7.3L Navistar T444e Diesel
[QUOTE=Johnny Mullet;335249]My bus was a slow turd when I got it. Totally do the horsepower bump! Cadillackid here on the forum bumped mine up to 210 hp and it made a huge difference. I also straight piped the exhaust system and did a EPBV delete........

Man, that's awesome with the videos! Thank you!
I subscribed! My Youtube channel is Commander Zarkon.

Your bus sounds awesome, and looks like even from the takeoff like it has power!



By the way, that name "Johnny Mullet" is just awesome! I'm a writer and filmmaker and man that would be a great name for a character in a post-apocalyptic land! Hey-maybe I can make a film with you as a cameo, driving that bus, with a 50 cal on it!





Anyway...


I was laughing at my video (still to be posted) because as I'm obviously moving forward due to the background, all the cars traveling in the same direction make it look like I'm standing still or going backwards!



Really want to get the engine tuned up! But... I have a LOT to learn, because I know ZILCH about diesel!


I'll focus on getting the bus built as an RV first, and then do the engine stuff. This works great because it'll allow me the time to learn, and gather parts. So I'll be looking at your videos and gathering information.


Sorry if I missed the obvious, but is there a list of what to do-maybe with order of importance-like the parts etc? My bus is just under 200,000 miles.
Is the program to tune the engine available? One of the videos shows the guy using a Mac to do it.





One note on my area of knowledge: video...
If you can get a head mount for your camera, it will help a lot when demonstrating: no one handing it.
A wide angle lens, even a cheapy one, can make it better also.
Also, not sure if its something you're willing to spend on, but the GoPro Hero 7 Black is great for this: easily mounts to a head band, has time lapse, has wide angle, and most of all, has stabilization, which makes the video so smooth!


Anyway, thanks again for the links! Amazingly helpful!
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Old 06-29-2019, 02:41 PM   #7
Skoolie
 
Join Date: Nov 2015
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Engine: 7.3L Navistar T444e Diesel
Quote:
Originally Posted by Johnny Mullet View Post
My bus was a slow turd when I got it. Totally do the horsepower bump! Cadillackid here on the forum bumped mine up to 210 hp and it made a huge difference. I also straight piped the exhaust system and did a EPBV delete........



On a diesel forum, someone said you can rewire the EPBV to act as an engine break. What do you think of that?


Also, my bus is a 2004 and things seem pretty clean all over.
Do you thing removing the EPBV is something I can do at home?


Thanks
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Old 06-29-2019, 02:48 PM   #8
Skoolie
 
Join Date: Nov 2015
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Quote:
Originally Posted by Johnny Mullet View Post
My bus was a slow turd when I got it. Totally do the horsepower bump! Cadillackid here on the forum bumped mine up to 210 hp and it made a huge difference. I also straight piped the exhaust system and did a EPBV delete........

On a diesel forum, someone was saying you can rewire the EPBV to serve as an engine brake. Seems like this would still have obstruction with that valve-even when open.
What do you think?


Also, do you think doing that delete is something that can be done at home? My bus is a 2004 and seems pretty clean all over. 95% of the track/tie down bolts came out very easily.


Is there other things to do along with the delete?


Thanks
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Old 06-29-2019, 03:17 PM   #9
Skoolie
 
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Posts: 154
Engine: 7.3L Navistar T444e Diesel
What do you all think of this?


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Old 06-29-2019, 05:17 PM   #10
Skoolie
 
Join Date: Nov 2015
Location: AZ
Posts: 154
Engine: 7.3L Navistar T444e Diesel
Quote:
Originally Posted by Joe45 View Post
On a diesel forum, someone was saying you can rewire the EPBV to serve as an engine brake. Seems like this would still have obstruction with that valve-even when open.
What do you think?
Also, do you think doing that delete is something that can be done at home? My bus is a 2004 and seems pretty clean all over. 95% of the track/tie down bolts came out very easily.
Is there other things to do along with the delete?
Thanks

Johnny Mullet,

Well, I paused your video and came back just now to the part where you don't recommend this as a home project.

+++

I called the mechanic at the local (and I think only) diesel shop, and he said if I remove the EPBV, I will lose engine brake capability, so I'm just thinking of a way to make that a manual thing, with some kind of switch or even a bicycle cable lever contraption. We will be climbing and descending mountains-even to travel out of here, so I don't want to loose safety and transform the bus into an overgrown Chitty-Chitty-Bang-Bang!!! Mainly because I don't have wings and a propeller installed yet!



I mean, driving the bus from Phoenix it was a game of 20mph (if that) up the mountain, and downshift down the mountain-repeat over and over. A few times it was a 6% or more grade going down, with a left turn and a valley several hundred feet below.

-------I live in a somewhat rural area. While we have a few places to eat, the nearest Outback or Barnes & Noble, for example, is 2.5 hours away. The diesel guy is a good 20-25 mile drive.-------

He also said I am at 210 HP right now and can boost it about 30%. I'm amazed because this thing is so damn slow! I mean, a mild hill seems hard to climb!!!


I explained that I want more power while keeping the engine reliable. I don't want a dragster, but I don't want a slug either.

He's gonna research more, and also give me a quote on doing the engine reprogram etc. on Monday.
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