04 and 04.5 turbo housing

[Schicken bone]

i have read just about all the post on housing. what is the difference and what is to much boost on the stock turbo? when towing, 14000 to 15000# on a GOOD pull i can see 45# easy. 04 3500

 

[zues]

Is your stock or modified

 

[SRadke]

What is the difference and what is to much boost on the stock turbo?

A good rule of thum for the stock turbos is not more than 35 psi for any period of time. Many boost elbows will cause them to spike up around 40 but they should settle back down a bit.



As far as I know the diffrences are in the wastegates (600's being electronic), and the compressor wheels/housings (600's being slightly larger). The 600's also have a sensor in there for something, can't remember what.



Where are you measuring your boost and with what? The map sensor reads ultimate pressure so if you read it off that you'll have to subtract 14. 7 for pressure at sea level.



-Scott

 

[Schicken bone]

Is your stock or modified

turbo is stock but the motor is not

 

[Schicken bone]

what you are saying is that 40 to 45 minus 17? that would put me back to 30+or-. read off the map and banks boost gauge.

 

[WCounts]

04.5 turbo

This must be a fairly stout turbo that comes on the 04. 5s. With the engine in stock form it boost more than 30 psi. I can run level 4/4 with 32 psi boost and EGTs level out at 1300 *F. in over drive @ 100 mph. This is 414 hp in my truck. I see on this forum some are running 5/5 and higher pushing upper 30s boost. I don't here anything about turbo problems. The TST boxes have a reputation for being hard on turbos. They must have made some changes to be more friendy with turbos. The power on mine ramps up quicky but not abrupt to over spin the turbo. If Florida doesn't get washed away before I get my Suncoast converter and valve body installed I will try some higher levels but if 5/5 is as big a jump over 4/4 as 4/4 is over 3/3 I may not go higher. I don't want to start breaking things. Power is adicting. The more you make the more you want. I'm going to have to make my self stop soon.

 

[SRadke]

what you are saying is that 40 to 45 minus 17? that would put me back to 30+or-. read off the map and banks boost gauge.

The MAP sensor reads ultimate pressure. The ultimate pressure is the diffrence between 0 pressure and your reading. At sea level on earth the weight of the athmoshere applies 14. 7 psi to everything. You average pressure gauge that reads 0 at sea level has already subtracted that 14. 7 psi out. If you read the output of you MAP sensor without the truck even running it would say you have 14. 7 psi boost, because the athmoshere has that much pressure.



If your Banks boost gauge reads 0 at idle then there is no need to subtract for the athmosphere. What it reads is what you've got.



-Scott