2000 International 4700 with orion

[Power Hungry]

Chris,

Thanks for posting up the video. That was awesome. I was enjoying just watching the truck scooting through the gears, but when the camera switched to the mirrors I got a huge smile. I was thinking, "I know where this is going." Of course, I was not disappointed. I was chuckling about the same time as your dad was.

In any event, that's a really nice build. I see a lot of work going into the truck and it's paying off. Heck, you've got a small fortune just in Klimat, but I bet it really helps quiet things down. Can't wait to see it all finished up.

Again, thanks for sharing and look forward to future updates.

Take care and God bless.

[Absolution]

Originally Posted by Power Hungry

Chris,

Thanks for posting up the video. That was awesome. I was enjoying just watching the truck scooting through the gears, but when the camera switched to the mirrors I got a huge smile. I was thinking, "I know where this is going." Of course, I was not disappointed. I was chuckling about the same time as your dad was.

In any event, that's a really nice build. I see a lot of work going into the truck and it's paying off. Heck, you've got a small fortune just in Klimat, but I bet it really helps quiet things down. Can't wait to see it all finished up.

Again, thanks for sharing and look forward to future updates.

Take care and God bless.

Yes, the killmat absolutely helped remove a lot of the highway drone. I've also got some firewall noise blocker I need to finish installing when I get back. what's left I just turn up the sound system.....

This morning I've ordered a

4" powerstroke downpipe to cut and fab up for the international.

A wastegated housing and actuator

Comp Cams valve springs

I'm looking at a stage 1 rebuild kit for the bottom end that I can keep on shelf until I need it.

I'm also going to hold off on ordering new injectors until I get home so I'm not sitting on a core charge for months.

I personally don't like the smoke, (Even though my other truck on my page does), and all I'm looking for in this truck is a reliable and cool 300-350 hp in the end.

That's why I was so excited about the reflash tool. It's opened so many options for me. As before I was looking a DT446 NGD swap but I didn't want to move the transmission back and lose my center console.

[Power Hungry]

It's funny, because I'm not big on smoke either. We have worked very hard over the years to make files that run clean and strong. At one point in time, we did make files like Smoke Show and Lope Idle, but we've long since done away with those. In fact, we've taken heat from customers that wanted us to build those types of tunes and we've refused.

In your situation, we can certainly tone down the low boost fueling to eliminate that puff of smoke when laying into the throttle, but the downside would be a bit of turbo lag. It really comes down to the idea that those trucks need all the help they can get to start moving, so the compromise was to add a little more fuel in the low boost area to help get moving and get the turbo spooling. Of course, that was on the big file, so dropping down to level 4 or 5 would also help clean the exhaust up.

I'm certainly interested in hearing your thoughts on the drivability vs. smoke. Whenever you have some time, feel free to give us a shout and we can discuss it. Or, if it's easier, we can just plod on through here. At least then, other folks could benefit from the conversation.

Keep me posted.

[Absolution]

Originally Posted by Power Hungry

It's funny, because I'm not big on smoke either. We have worked very hard over the years to make files that run clean and strong. At one point in time, we did make files like Smoke Show and Lope Idle, but we've long since done away with those. In fact, we've taken heat from customers that wanted us to build those types of tunes and we've refused.

In your situation, we can certainly tone down the low boost fueling to eliminate that puff of smoke when laying into the throttle, but the downside would be a bit of turbo lag. It really comes down to the idea that those trucks need all the help they can get to start moving, so the compromise was to add a little more fuel in the low boost area to help get moving and get the turbo spooling. Of course, that was on the big file, so dropping down to level 4 or 5 would also help clean the exhaust up.

I'm certainly interested in hearing your thoughts on the drivability vs. smoke. Whenever you have some time, feel free to give us a shout and we can discuss it. Or, if it's easier, we can just plod on through here. At least then, other folks could benefit from the conversation.

Keep me posted.

Well, that little bit doesn't bother me and I completely understand the prefueling. I probably should have just said smoke and not "the smoke", that amount to me was completely acceptable.

That being said if I get the 160 single shots and one of your hotter tunes 275-300. Do you think it would do decent in the mountains with the trailer or would I be looking at a different turbo, If that's the case what would you recommend? Since I've already installed new uppipes I don't really want to go to a T flange.

Also Would you recommend keeping with the stock size nozzles on the stage 1 injectors?

My other truck was running 5x.016s (now 5x.012 using it on property) and a k31 single with a ported head and some other odds and ends.. I built it when I was enlisted and I didn't have to tow anything. It just made a single hot pass then cooled down lol. I also daily drove it like this and would travel 1000 miles trips one or twice a year. But yeah, it doesn't pull any kind of trailer on the road.

[Power Hungry]

Honestly, the stock turbos seem to perform pretty well, especially when swapping to a 1.0 housing. Improves low RPM spool and still open enough to keep EGTs in check. My only recommendation would be to call DieselSite and order a Wicked Wheel for that turbo. Makes a noticeable improvement in airflow, particularly when pulling.

One advantage you have is that you are running a manual. EGTs are almost always caused by lugging the engine in too high of a gear. With the ability to just knock it down a gear or two and get the RPMs up, you can increase airflow through the engine which keeps the EGTs in a reasonable range. You could concieveably run a 38R turbo with a 1.0 or 1.15 housing if EGTs start getting unmanageable, but you're going to lose some bottom end as these turbos are slower to spool than the standard GTP38. I guess it all depends on the type of driving you anticipate normally operating the vehicle in.

On the Stage 1's, yes... I'm personally a big fan of keeping the nozzles stock. Unless you're spending a lot of time over 3000 RPM, stock nozzles don't have any problem discharging 160cc of fuel. On the Power Stroke counterparts, we regularly see 350-375 HP while still running the stock turbo. With appropriate exhaust (which you've already addressed), EGTs should be very manageable even as power output crests 300 HP.

The only real concern we really have on the Navistars is the rather anemic cooling system thermal dissipation. Most of these trucks run the split radiator/intercooler, and this can cause elevated operating temps at higher power outputs with heavy loads. You, however, are ahead of the game as you already addressed many of these issues with replacing the radiator (they get pretty cruddy inside) and the water pump. If your timing cover is the setup that has the coolant filter included, just make sure to change that regularly.

I hope this is helpful.

[Absolution]

Originally Posted by Power Hungry

Honestly, the stock turbos seem to perform pretty well, especially when swapping to a 1.0 housing. Improves low RPM spool and still open enough to keep EGTs in check. My only recommendation would be to call DieselSite and order a Wicked Wheel for that turbo. Makes a noticeable improvement in airflow, particularly when pulling.

One advantage you have is that you are running a manual. EGTs are almost always caused by lugging the engine in too high of a gear. With the ability to just knock it down a gear or two and get the RPMs up, you can increase airflow through the engine which keeps the EGTs in a reasonable range. You could concieveably run a 38R turbo with a 1.0 or 1.15 housing if EGTs start getting unmanageable, but you're going to lose some bottom end as these turbos are slower to spool than the standard GTP38. I guess it all depends on the type of driving you anticipate normally operating the vehicle in.

On the Stage 1's, yes... I'm personally a big fan of keeping the nozzles stock. Unless you're spending a lot of time over 3000 RPM, stock nozzles don't have any problem discharging 160cc of fuel. On the Power Stroke counterparts, we regularly see 350-375 HP while still running the stock turbo. With appropriate exhaust (which you've already addressed), EGTs should be very manageable even as power output crests 300 HP.

The only real concern we really have on the Navistars is the rather anemic cooling system thermal dissipation. Most of these trucks run the split radiator/intercooler, and this can cause elevated operating temps at higher power outputs with heavy loads. You, however, are ahead of the game as you already addressed many of these issues with replacing the radiator (they get pretty cruddy inside) and the water pump. If your timing cover is the setup that has the coolant filter included, just make sure to change that regularly.

I hope this is helpful.

Awesome thank you for the info. I'm not entirely in-depth with the 7.3.

Yes, It is a split radiator, I wanted to go to the older style but it was what was available at the time and by time I mean discovered a hole in the bottom of it when I tried to flush it and clean out the fins.

Since I've had new radiator and I've set the clutch to a lower temp she's been doing pretty well even on the hot days. Hopefully once most of this is done it will live in the flat lands. Maybe only pull a camper to the mountains.

EDIT:
Also as far as stock EGT's go in when I was towing up the mountains it wouldn't go over 1050 before. That was with the factory 1.0 housing and the probe right above manifold on driver side uppipe. So I figured I did have some wiggle room.

Something to ask on with this reflash system am I still able to use my nexiq to interface with the truck?

[Power Hungry]

Originally Posted by Absolution

Also as far as stock EGT's go in when I was towing up the mountains it wouldn't go over 1050 before. That was with the factory 1.0 housing and the probe right above manifold on driver side uppipe. So I figured I did have some wiggle room.

Something to ask on with this reflash system am I still able to use my nexiq to interface with the truck?

If you're peaking at about 1050 now, then yes... You've got a little room. 1150-1200 sustained under heavy load is about the max you'll want to see, with short bursts (10-15 seconds) at 1250-1300 being okay.

As for the Nexiq, that should still work just fine. I use mine on the bench all the time and I can't even count how many times I've reflashed my test PCMs.