This is the load I hauled this past weekend, minus the 4 wheeler. With the new mods she went up the hills in 4th or 5th at between 48 and 60 mph. The EGTs most of the time were around 1250 to 1350. On the long, steep hills the temp would go to 1400 and a few times started into the 1500s before I backed off. Do I have to change my driving tekneek or is there some fine tuning I need to do? Or is this normal and OK? Any info is greatly appreciated.

 

Wow if its the 93 in your sig, is there something your not telling us about, like pump tweaking??

HAving a factory I/c and only a DennyT pin and 366 spring, those are pretty high numbers and definely don't wanna do that too much... But then again you were towing and i have NO experience towing and that looks like a good load.

Stock air intake? I think opening up some air and making a BHAF mount with the HUGE filter would help some.

 

I haven't put it in my sig yet, but just before the trip I installed the Amsoil version BHAF and an ABS 45 off turbo. I removed the old air box completely. The pump is at factory timing and I haven't touched the fuel pin or the star wheel. I did turn out the smoke screw about 1/4 to 1/2 a turn, I didn't want that much smoke.

 

what turbo do you have? the stock h1c with the 18.5 cm housing?

 

It is definitely the H1C, as for the exhaust I'm not sure. The company I bought it from replaced the turbo not long before I bought it. I don't know where to look on these to find out what size it is. I would have to say they replaced it with a stock turbo as it was just a fleet truck to them.

 

It should be an 18.5cm housing, On my 92, my stock turbo had a 21cm housing and it ran really hot like your truck. I recommend gettin a different turbo that will push more air and it will run way cooler. I love my he351(stock turbo off 04.5-07 5.9) It has the 9cm housing and it spools really quick and runs way cool. Even changin the exhaust housing to a smaller housing and maybe the compressor upgrade on your h1c would help it a lot, it would push a lot more air and run cooler, and you would get better mileage! so i say do somethin about your turbo, get one that pushes more air or do a little upgrading to the h1c.

 

Being a 93 it should have the 18.5 cm exhaust housing, Which is what you want for towing. No more no less. I think its perfect.

You said you haven't touched the fuel pin but in your sig it says DennyT fuel pin... You say fuel pin are your meaning fuel screw (aka power-screw) ??

 

Looks a lot like my truck, I will try and snap a couple of pics in the AM of our setup for toting the tractors around. We are going pulling so I will have at least one of the Dodges loaded down.
DS79

 

I think it's your driving style, grandpa.

Sounds to me like you are afraid to wind it up. 5th on a hill at 60 is borderline lugging, with that big turbine housing it's not surprising it's running hot. RPM is your friend, keep it wound up and it will run cooler. This will become even more important when you get the HX-40 on it.

Try to keep it down around 1200. 14-1500 is OK for a few seconds but you don't want to hold it there. If the top of the hill is a couple hundred feet away, OK - but don't hold it up there for a 1/2 mile and expect to not scuff a piston.

 

Yes, fuel screw.

Is the cm stamped in the housing like on the HX40? If so where?

If I turn in the fuel screw will that make it run cooler? Like on a gasser less fuel = lean mix = hotter temps. Does a diesel work the same in that sens? I am only looking for power, not a James Bond smoke show. From 2nd to3rd now it kills allot of mosquitoes when I'm towing. That and I didn't know if it decreased fuel mileage? That's why I haven't messed with it yet.

 

More fuel = hotter.

You are definitely not winding it up like you ought to if you are lugging 3rd.

Back off the smoke screw, that's not helping.

 

LOL! My mother thinks I drive it like I stole it, but I think you are right. I am a little slow to hold it to the floor at the bottom of the hills before the assent. I guess I'm a little leery about holding anything to the floor. So I guess its the operator that needs adjusting.

 

I have that HX40W with a 19cm housing. I didn't install it because everyone said I wouldn't be happy cause it so laggy. Maybe I'll try it.

I hold 2nd and 3rd until (I think) the governor kicks in. Then I shift. I think the next mod is going to be a tac.

Whats wrong with backing off the smoke screw? I thought that only dictates where the fuel pin is before boost or at idle? Would that affect EGTs?

 

I'm not talking about flooring it at the bottom of the hill. I'm talking about downshifting when needed.

"When it stops pulling" is a good time to upshift. "When the EGT gets over 1200" is a good time to downshift. Don't worry if the engine sounds like it's screaming, they are much happier working at 2800 RPM than they are at 1500 RPM.

If you have heavy smoke when you first get into the throttle, then your smoke screw is in too far. That is dumping fuel and making smoke and heat. You may also want to run the star wheel up some to reduce the smoke when the boost first starts to come on. Clean = cool.

That HX-40 is going to make things worse, not better. It will be really hot until you get it wound up to 2500 RPM or so.

 

As soon as the engine is under load, any upward grade. The EGTs go up to 1200 to 1250. Once the hill gets steeper that's when they immediately begin to clime up to the 1350 to 1450 range. At that point my speed to RPM seem fine, down shifting at that point would only slow me down and really rev her up.

I definitely agree with you on when I down shift. I always try to get every last RPM out of each gear, bad habit I guess.

The star wheel is the next adjustment. That's what I am seeing, lots of smoke just as I am getting into the throttle and the boost builds up. Then its fine.

Please clarify this for me, My housing is an 18.5 cm and the HX40 I have is a 19cm. One half of a cm is going to make that much of a difference on spool up? One half of a cm is less than 1/4 inch or there about isn't it? Also the temp problem I am having is not at the spool up but at full boost where the HX40 pushes more air? Please help to adjust my thoughts.