You can see my setup below. I would like to lower my egt's while towing my fifth wheel. While pullin and goin through the gears she will smoke pretty good and then clear as the rpm goes up. If I accelerate and then get out of it a bit and then back into it that will help the temps. When shiftin into third and fourth and accelerating the temps will rise to 1200 and more if I would let it. I don't let it go past 1200 and most usually stop it in the mid 11's. I have enough power it's the egt's that have to be contended with. What is the best way to bring them down and still keep the power? The milage is great even towing but that is another story for later. I have the pump bumped up as high as I would want to go. I may even bring it down a bit. Even on a flat and towing the 12k fifth I run around 1000 and with any with a head wind or a grade it will clime to 11 to 1150. Like I said before I have the power I just can't use it because of the egt's.
Thanks for the help guys

 

I've been seriously looking at one of these setup's. http://www.snowperformance.net/products.asp?id=10

 

You need more air. What sort of manifold pressure are you seeing with those EGT's and what RPM's are you running? You're still running stock injectors, right?

With the 16cm housing and EGT's that high, you should be seeing manifold pressure at least in the mid to high 20's.

 

I have a similar setup and the same problem. Lots of power but can not use it because the EGTs get too high. I see about 28# for boost if its completly nailed pulling a hill.

 

No way!!!!!!!!!!!!!!! At best I am runnin about 15 psi at best. I am getttin 15 but thats it.

 

Alec

Remember I'm runnin 354's so at 65 my rpm is about 1800. At 70 it runs about 2k. Yep stock injectors.

 

Something is wrong then, you must have a leak somewhere. I was getting 18psi with a KN airfilter and the pump turned up. As soon as I went to the 16cm housing I jumped to about 24psi, the gov spring and the 4" exhaust took me up to 28psi.

Check all of the connections for the ducting from the turbo to the intercooler and from the intercooler to the intake. Visually inspect your intercooler for damage.

If you can not pin it down you may have to get your intercooler pressure tested.

Check the connections for the boost gauge as well, maybe its not reading correctly? How is the air cleaner? When I bought my truck the aircleaner was dirty and just replacing it made a noticable difference.

 

I have had the truck since new. The filter in it now is an AFE. I must have a leak in the intercooler somewhere. I guess this is when the fun starts huh? How do ya go about findin that? Also if get my boost up will that drop my egts'? Is it possible that I have an adjustment on the pump out? A mismatch that it corrected will keep the power and lower the egt's?

 

My 93 350 4x4 with the pin full rich,star down all the way and 1 turn in on the full power is getting me 22 psi which I thought was a little low. before I started ,max was 17psi. I get some smoke on nailin it to the floor but thats it. I have not gone past 1100 EGTs yet this way. I have been messin around with intakes and it seems if I suck in heated engine air(modified box or?) EGTs are noticably up more. Im toying with a ram air from the front, if it works or helps Ill let you know. I would say if you can get to 22+ boost your EGT problemn will be gone.
Good luck.

 

Check all the the clamps holding the hoses on as well as check for cracks in the piping and hoses. If you are really creative you could rig up adapeters to fill the intercooler with compressed air(regulated, not full 120psi shop air!) and then submerge it to see if there are any leaks.

 

I think I am about the same place but my fuel adjustment is 1 1/2 turns out. I may go in a half and see. This boost thing seems to be biten me in the butt. I was wonderin if you can take both ends of the intercooler pipein off plug the ends pressurize it to about 5psa and have some kinda smoke in there to show where there is a leake. Maybe not smoke but something that would show as it leaked out.

I gotta get these egt's down.

 

I presurrized mine to 15psig. Spray it with a soap solution. You will find any leaks pretty quick.

Carl

 

If you guys are getting high EGT's with the stock injectors I have one suggestion.

Timing? If your timing is retarded you will get high EGT and not be able to use the power. With my 93 I had the fuel maxed out with 26 psi boost, stock injectors and housing (18.5) . I would pull a 27' enclosed trailer loaded to over 8000# up a 3 mile hill. It held it at 65 mph in 5th gear and I never got over 1175°F on the pyro.

Thumbs, your boost sounds low, do the leak check thing and also check all the intake manifold bolts. I found a couple loose once and a while. With the intercooler I would take the boot off of the outlet of the turbo and the boot to the manifold off and plug them and pressurize to about 30 psi and see if it leaks down on you. If so then pull out the paintbrush and dishsoap to see if its the boots, connections or lastly the intercooler. If the intercooler leaks, you would have to take it out to find the leak anyway.

Good luck.

J-eh

 

Are you talkin engine timing or pump timing? I did bump up the timing on the pump a pretty good ways. Maybe 1/4 inch. She starts fine and sounds about the same. Maybe a tad louder. There has to be a leak somewhere. When driveing I have to watch the egts all the time. I never let er go over 1200 and try to say no higher than the mid 11's. Ok sounds like a job for the ole dish soap

Hey what kinda boost should I be seeing? I know some say 28 or so. I am runnin the 16mm housing.

 

Ok, well timing is not the issue then..

With a 16 cm housing and the advanced timing I would think in the neighborhood of 25 psi for sure at WOT near 2800 Rpm.

Either that or you have a small animal caught in your air filter.

(edit) I just had a thought... How about the ex-brake? Maybe its not staying fully open like there is a vacuum problem in your system.

J-eh