Need Help w/ 16cm Housing Upgrade

[Wiredawg]

Need help... I removed the stock turbo from the truck and removed the 4 bolts securing hold downs to exhaust housing. Qustion: Does the exhaust housing separate from the rest of the turbo assembly by simply pulling it apart or do you have to disassemble the entire unit to get the impeller free. I couldn't find this explained anywhere in the forum and the instructions that came w/ the housing are for installing/removing the entire turbo unit from the truck, not replacing the entire unit.



Thanks in advance for your help.



Wiredawg

 

[Wiredawg]

Never Mind...it just comes apart.

After I posted, I went and tapped on it and voila, it came right apart.



Thanks, Wiredawg

 

[Joseph Donnelly]

I am posting on this topic for the benefit of others who may want the faster spooling 16 cm2 turbine housing for their First Generation Turbo Diesels, or for the better airflow and lower maximum egt's on their Second Generation trucks. The 16 is the smallest housing for a First Generation that is a direct fit. The smaller housings are 1. 25” longer on the outlet end because most of them have wastegates. Therefore, the downpipe will be too close to the heater box on most First Generation trucks with the 12 or 14 cm2 housings. On the other hand, using the shorter 16 cm2 housing on a Second Generation Turbo Diesel involves moving the entire exhaust system forward that 1. 25” by bending the hangers, and revising the stabilizer rod going from the exhaust to the transmission mount bracket.



With heat warping the entrance of the turbine housing, and an accumulation of rust, the turbo seems quite “stuck” on most older Turbo Diesels. I have found the most successful way to separate them to be this: soak the mating area with rust penetrant; tap on the compressor housing with a hammer near the outside diameter, going across for sequential taps, while spinning the compressor wheel manually to be sure the exhaust wheel is not binding on the exhaust housing. If it starts to scrape, tap the parts back together slightly where you last hit the compressor radially. Then, continue tapping to separate them, keeping the turbo center section and the exhaust housing aligned as well as you can, as determined by lack of scraping on spinning the wheel.

 

[cerberusiam]

The smaller housings are 1. 25” longer on the outlet end because most of them have wastegates. Therefore, the downpipe will be too close to the heater box on most First Generation trucks with the 12 or 14 cm2 housings.

Nah, thats what they make heater wrap and turbo boots for. :-laf

 

[Greenleaf]

If you think that is close, some guys are fitting the s300 base units in there with four or five inch down pipe.



That poly rubber plastic wrap across the HVAC unit pulls off.

 

[pepecat]

There are 14 and 12 NON WG turbine housings available for our HX35/H1c that are a direct fit and the same length as 16/18/21 non WG housings.