Engine/Transmission (1994 - 1998) Towing with my Setup?

[SuncoastCustoms]

I was wondering if anyone has towed with a setup similar to mine and what kind of results you are getting. Are your EGTs high and what speed do you travel at when you are towing? Also, what is the weight of the trailer you were towing when getting these results.



Thanks in advance for your input.

 

[Forrest]

Kinda close ... but I regulate by the boost guage. General towing, 27' 5'er, I regulate boost to 20psi max.



The exception is when you get something on the radar on or approaching a hill. Then i regulate by EGT. Nothing is more satisfying than to look in the passengers side mirror & see , especially when you're towing something bigger.



I can easily over EGT while towing, so ye ol' right foot control is used.

 

[JGheen]

You are probably going to see really high EGTs since you are running no fuel plate, especially if you throw a decent sized load on the back. I would put a plate in it if you are going to tow and maybe even throw a spring back in the AFC while your at it. You'll still have more than enough power and torque with your set-up to be passing cars on a grade with a pretty heavy load behind ya.

 

[SuncoastCustoms]

Originally posted by JGheen

You are probably going to see really high EGTs since you are running no fuel plate, especially if you throw a decent sized load on the back. I would put a plate in it if you are going to tow and maybe even throw a spring back in the AFC while your at it. You'll still have more than enough power and torque with your set-up to be passing cars on a grade with a pretty heavy load behind ya.

I am assuming that towing 3000# through Florida and southern Georgia will not be an issue, right? I am towing a 6x12 enclosed trailer with a 4 wheel and equipment to Georgia, not even up north to the mountains. Think my truck will suffice with this trailer weight?

 

[JGheen]

Originally posted by SuncoastCustoms

I am assuming that towing 3000# through Florida and southern Georgia will not be an issue, right? I am towing a 6x12 enclosed trailer with a 4 wheel and equipment to Georgia, not even up north to the mountains. Think my truck will suffice with this trailer weight?

Yeah, through the flats of those states should be Ok, if just at a cruising speed. I would be very hesitant to get on it with any load other than the weight of the truck due to the EGTs are going to get extremely hot without a fuel plate. I personally have never run without a fuel plate(kinda scared to), but I have heard of the consequences if run like that all the time since the engine is recieveing absolute FULL fueling at all RPMs. Anything over 1350* EGT for long periods of time(40+ seconds) can and will melt the pistons down. I hit that temp about eveytime I am really getting on it in 4th gear, but I am only seeing that temp for a second or two so my pistons won't see any dangerous temps.

 

[SuncoastCustoms]

Originally posted by JGheen

Yeah, through the flats of those states should be Ok, if just at a cruising speed. I would be very hesitant to get on it with any load other than the weight of the truck due to the EGTs are going to get extremely hot without a fuel plate. I personally have never run without a fuel plate(kinda scared to), but I have heard of the consequences if run like that all the time since the engine is recieveing absolute FULL fueling at all RPMs. Anything over 1350* EGT for long periods of time(40+ seconds) can and will melt the pistons down. I hit that temp about eveytime I am really getting on it in 4th gear, but I am only seeing that temp for a second or two so my pistons won't see any dangerous temps.

I rarely see over 1200. I saw 1425 once, it was on a run to 130mph, but it was only for a second. Once it hit that, I let off. At a normal no load cruise at 80mph on the interstate it cruises at about 750F. I dont think i should run into any issues. I might get a fuel plate to install for towing.

 

[JGheen]

Originally posted by SuncoastCustoms

I might get a fuel plate to install for towing.

Good idea.

With the temps mentioned, you should not have any issues. But I am curious why your EGTs are so low with the 370, no plate combo. They should be sky high unless I am missing something here, cuz that is a lot of fuel you are throwing at the engine.

 

[SuncoastCustoms]

Originally posted by JGheen

Good idea.

With the temps mentioned, you should not have any issues. But I am curious why your EGTs are so low with the 370, no plate combo. They should be sky high unless I am missing something here, cuz that is a lot of fuel you are throwing at the engine.

Not sure. It may just be a combination of the springs, valves, thicker head gasket, etc... If not, then I do not know. I am happy with the EGTs on my truck. I can make them see 1250 or so with no problem if I get into it, but in normal driving it will rarely see more than 900F in stop go driving. Driving in town it sees about 600F, if that.

 

[JGheen]

How advanced is your injection timing? 18-19*? You must have some high timing or you really are running a fuel plate(not calling you a liar ).

Can someone chime in and give me an answer as to why he is not seeing high EGTs with his set-up?



Thanks, Joe

 

[Deezul1]

I believe the plate only comes into play at full throttle and at part throttle EGTs would not be much different than a plated pump.

 

[SuncoastCustoms]

Originally posted by JGheen

How advanced is your injection timing? 18-19*? You must have some high timing or you really are running a fuel plate(not calling you a liar ).

Can someone chime in and give me an answer as to why he is not seeing high EGTs with his set-up?



Thanks, Joe

The timing was set when I bought it, but he said it was set to 18. 5*. That could attribute to it. Should I pull off the cover to check if it really maybe does have a plate, if it does, I would be astonished, as it is already a quick truck.

 

[JGheen]

You mean you don't even know if it does or doesn't have a fuel plate?:--) Come on, man, I'm sittin' here trying to understand how your EGTs could be so low when running no plate is known for high temps. It's absolute full fueling to the limits of your pump, DVs and injectors, which you say are 370s, so they too should be giving some serious fuel. Running no plate allows the governor lever to go as far as it will extend forward with no profile or stop for it to limit the amount of fueling thus fully fueling the engine. Do you really have 370s? Your timing is pretty decent for your listed set-up and that could be a good help in temp reduction, but I'm just now.

 

[SEmerson]

Which that combo there is no way you would see behind the truck at full pedal.

 

[SuncoastCustoms]

Originally posted by SEmerson

Which that combo there is no way you would see behind the truck at full pedal.

That is defiantely a fact. I can flood a 4-lane intersection in the snap of a finger. Lots and lots of smoke is a definant on my truck. I love it. I have never checked to see if it has no fuel plate, but I have a stock one sitting here that was given to me with the truck, and he said, no it doesnt have a fuel plate, here is the stocker. I will check tomorrow to double check if it has or does not have a fuel plate.

 

[Cooker]

I would also guess your EGT's would be a little higher. Your EGT probe is pre turbo right?



If your EGT gauge is accurate and you are only towing 3000 lbs through the flat parts of the state I don't think you will have any problems.

 

[Forrest Nearing]

sounds like I need to advance my timing...



370 injectors, rack stop plate slid WAY forward, HX40 @ 40psi, and w/ 16* timing, EGT's get toasty FAST!

 

[Forrest]

Suncoasts pump is NOT the 215. The 215 pump with that setup would be bunches hotter. Are those EGT #'s still to low for the auto transmission type pump?



Wonder if timing is way more than that? Does timing reduce EGT that much?

 

[Cooker]

Are those EGT #'s still to low for the auto transmission type pump?

Yes

Does timing reduce EGT that much?

No.

 

[SuncoastCustoms]

New EGT Temps

Okay. On the way home from the shop today I watched the EGTs almost all the way home. The normal EGT reached with moderate acceleration from a red light is about 1000-1200F. If cruising at 60 mph it reads about 750 or so, and if I give it mild acceleration, it will reach 1100-1200 easily. I am sorry for all the confusion, I must have never paid much close attention in daily driving when not driving hard. It must get hotter than normal. Does this sound more normal? They can get high very quickly.



Thanks.

 

[Forrest Nearing]

yes, that makes me feel MUCH better! LOL! mine'll see 1100-1200 with very little effort... 1600 is just a few seconds away! LOL!