Engine/Transmission (1994 - 1998) Turbine Housing

[Dirty&harry]

Need to upgrade my turbo from the stock 12cm2 with wastegate.



I run 330HP tst-kit to fuelpump,4"exhaust.



Working with porting/polishing head and intake,stronger valvesprings,replace governurspring to 4K,silicone hoses,stage 1 nozzles and bigger airfilter.



I altso concider water/methanol injection.



I cant decide if I need 14cm2 turbine housing w/wastgate ore 16cm2 non-wastegate.



Any experience??

 

[Vaughn MacKenzie]

With what you're doing you'll be past the 14cm and probably the 16. The 16 is a little laggy and helps with EGT but not by a bunch. The S300-based turbos would be a lot better choice, with porting and the TST kit you could probably move up to a 62/12 at least if not a 62/14.

 

[Dirty&harry]

Thanks

But no complete replacement Turbo for me. My Holset have only 195 000 kilometers on it... . (150K miles)

I belive I will stick to the 16cm housing then.
But Should I go for wastegate,ore will I not need it??

I see TST performance sells 16cm2 non wastegate turbinhousing for 200$.
And now,BD performance has now released theyr own 16cm2 non wastegate turbinhousing,for 275$... .
Is there any difference,I wounder... ... ??

I was considering Banks Quick assembly 14cm2 turbinehousing w/wastegateactuator.
Maybe that will be underdimentioded for my setup.

Not easy to choose what to spend your money to,there is a jungle of different products to differents prices... ... .

 

[FParisi]

I had the 16 housing on my '95 put on by Diesel Dynamics when they did a bunch of pump work. I think they said it was pretty hard to get the old housing off - something to think about. The truck did pull pretty good!

 

[fest3er]

A wastegate has two real purposes. First, it should prevent over-spinning the turbo and thus warping (stretching) the wheels. Second, it should prevent you from operating the turbo outside its 'map'. The 'map' upper limits are the points where the turbo starts generating more heat than compression. Or, in other words, charge air pressure continues to rise, but charge air density falls. Any gearhead will tell you you want cool dense air for best performance. Unless I knew my engine could not drive a turbo beyond its map, I would stick with a wastegated turbo.

 

[Dirty&harry]

Thanks.
Seemes like I learned new stuff here:-D

So,hvat you recomend me to bye of turbinehousing??
I have been wathing these alternatives:

Banks Power Quick-Turbo Assembly w/ Wastegate Actuator #24052

16cm Turbine Housing

Turbine Housing 16cm Dodge Ram Cummins Diesel 5. 9L 1993 : eBay Motors (item 250563750146 end time Feb-13-10 16:57:00 PST)

Ore maybe you have a better suggestion???

This is a sitat from dodgeraminfo rrom Geno's Garage:
What does the "Wastegate" do, and does it work along with "Boost"?

* The simple explanation: a wastegate limits the maximum boost generated by the turbocharger.
* How it works and what it does: The wastegate uses a pressure activated diaphragm and rod to operate an exhaust bypass around the turbocharger and thus limit the maximum boost that the turbocharger can produce. This permits an engine manufacturer to use a "fast" turbo charger with a small exhaust housing to produce useable boost at low engine speed and load. To prevent excessive boost at higher engine speeds, the wastegate limits the maximum boost to a safe level for the engine, and prevents turbocharger over-speed

Turning up the wastegate will increase the air volume that is stuffed into the cylinder. This *may* reduce the EGT, but will not increase power. How do you get more power? One way: more fuel = more power. To increase the power, the fuel rate must be increased. The boost should only be increased to match the fuel curve for smoke and EGT control. Several tests have been done where a truck was run on a dynamometer, the boost was increased by blocking the wastegate signal, and the truck was re-tested on the Dyno. In every case reported, no power increase was measured.

The 12 Valve engines do not have a problem with excessive boost. For improved performance on pre 94 engines, a 16 sq cm turbine housing is usually the best compromise between low speed boost and high speed exhaust restriction. The stock 12 cm housing on 94+ engines is OK up to about 240 HP, beyond which the small housing restricts the exhaust and raises EGT. A 16 cm housing provides enough low speed boost for an enhanced engine, and the exhaust runs cooler at high speed

Does this means that I do not need wastegate?
Where can I get 16sq cm with wastegate??