My Egts on my 01 duallie are getting hot when pulling loads. When I get on it half throttle the egts jump up to 1400 easy. I have checked all the hoses from the turbo to the intake with no leaks. There are no leaks from the exhaust to the turbo either. I cannot figure this darn thing out! Any suggestions? The trucks has the following upgrades on the engine, HX35 turbo, ATS manifold, Banks high rise intake, TST power box, 4' open exhuast w/ Banks 4 inch elbow, 110 injectors, Fass electric fuel pump. Would a clogged injector give me high EGTS? I have also inspected the inter cooler it doesn't seem to be clogged, but some people are telling me to take it out and have a radiator shop clean it out. I didnt know that was even possible?

Thanxs for any suggestions!!

 

I'm not trying to insult but how dirty is your Airfilter?. Do you empty you puke bottle regulary?

 

I am thinking maybe you are under turbo'd for those injectors and that box. How much boost are you getting? You need to stay about 35 psi on that HX35. If that won't keep it cool you need to look at something a little bigger to push the air, or something like a water/methanol kit to help cool the egts down.

How heavy are you towing?

 

Too many variables to answer your question with any kind of accuracy.... Can you get more specific? What transmission do you have? Has it been built to handle the power you are attempting to funnel through it? What do you have the TST set at?

With an HX35 wastegated at 35psi you cannot utilize the TST beyond level 5 and perhaps level 3 depending on your ambient air temperature and relative humidity.

If you have a stock automatic or manual that is slipping just the slightest bit it will cause your EGT's to be about 150*-200* higher because the engine is working harder to maintain the speed you desire.

Respond with answers to the questions above and someone here will be able to point you in the right direction.


Truck Girl

 

The auto tranny has been upgraded with Suncoast convertor, valve body and clevlar clutches.

I only pull or 34 foot gooseneck, with 2 trucks on it, on power level 3 and she still gets hot!

The BHAF is very clean .

The HX35W doesnt spool up that quick even on level 7. The waste gate is closed too. Your lucky if I can get 30-32 psi out of it floored

It use to be more peppy with lower egts. With no load on the truck I cruise at 55 with 4:30 gears at 960 egts. We have another duallie with the same stuff on it, with the only exception we kept the stock turbo on it and this one never gets higher egts.

Also what is a puke bottle??

 

Cruising 960* at 55mph unloaded is outrageous with a 4.30 gear. What RPM are you at?

The performance range of the B series engine is 1900-2400, but can be run up to 2700 all day long. If you are within this range at that speed and are experiencing EGT's that high something is seriously wrong.

 

Need to do somthing about the turbo with that much fuel! It also sounds like you may have a small boost leak? Hows the power??

 

pressurize your intake system with about 30 psi , and listen for leaks

 

How do I pressurize my intake? I have a big air compressor.

As for the performance, Im afraid to really get on it anymore due to the high egts! As soon as I get on it and the boost climbs so does the egt temp so I naturally back off the throttle.

Some people are blaming it on my intercooler, but it is not visibly blocked.

 

The HX35 turbo is not really an upgrade. All it gives you is a slower spoolup rate, since it was designed for the manual trans. With your injectors and the small turbo, you will be plagued with high egt's especially if you yow a heavy load with the box turned up. Mine will climb up there too, with the mods on my truck, altho I am not towing as heavy as you are. You need more turbo!!

 

I understand the HX35 was a mistake, and it is sluggish in take off, but even with out a load she still gets too hot!

 

With the injectors and the HX35 you will see higher EGT's. Sorry just a plain simple fact.

 

Yesa I understand your point , but way all of a sudden does the temps on the egts go higher. It didnt get this high when we first put the turbo on 3 years ago with the box only set on level 3! Im still pullin the exact same loads no different. Something changed to make the egts go up. Its got to be air or fuel, correct?

 

Go to the hardware store and purchase a PVC end cap and install a Schraeder valve and pressure gauge into the end. Fit it to your turbo and pressurize with your compressor up to about 20psi (don't go too high)!!! Then use a bottle with soapy water in it to squirt each and every junction of your intake system to see if you find a leak anywhere. Once you find the leak, fix it and you'll be good to go, although I tend to agree your numbers are too high for what they should be, but you still need more turbo.

 

Are you talking about capping the front of the turbo or back where the exhaust elbow is???