16cm2 turbo housing

[deanhinsley1963]

I,ve Heard that my year c.t.d. will benefit greatly with a 16cm2 housing is this true?? I,m only looking for about 250-300hp and still be able to tow ocasionally?

[peobryant]

Yes, it is very true. With a '92, you more than likely have a 21cm housing, which is very slow to spool, with a 16cm hosuing, it spools way faster.

[cougar]

My understanding is the 91s had the 21 and they reduced them back to the 18s because of the delay/smoke problems. In either case, smaller reduces lag time. 16s are good, 14s you need to start worrying about choke down unless you install a waste gate. Weather it will help with EGTs, I really haven't noticed a difference.

[Bad93Cummins]

http://www.gillettdiesel.com/16cm2non-w ... ing-1.aspx

The one im looking at getting.

[peobryant]

My understanding is the 91s had the 21 and they reduced them back to the 18s because of the delay/smoke problems. In either case, smaller reduces lag time. 16s are good, 14s you need to start worrying about choke down unless you install a waste gate. Weather it will help with EGTs, I really haven't noticed a difference.

The majority of '92's also have a 21cm housing. All '93's and Non I/C trucks have 18.5cm housings.

I've heard the 16cm housing will actually reduce EGT's. because it makes the turbo light faster, reducing EGT's.

[Bad93Cummins]

Is the one I posted a good buy?

[peobryant]

Is the one I posted a good buy?

I don't think so, you can find used ones for less than $100 shipped. The one you posted was overpriced, in my opinion.

But the 16cm housing is a good buy.

[Bad93Cummins]

well is that the one to atleast look at?

[Bad93Cummins]

http://www.gillettdiesel.com/16cm2non-wastegatedturbinehousing-1.aspx

The one im looking at getting.

This still use the 3" downpipe?

Also could you run this without gagues and nothing but 4" straight pipe done the to truck?

[peobryant]

http://www.gillettdiesel.com/16cm2non-wastegatedturbinehousing-1.aspx

The one im looking at getting.

This still use the 3" downpipe?

Also could you run this without gagues and nothing but 4" straight pipe done the to truck?

Yep, still a 3" downpipe, and there is no need for gauges on a stock truck with a 16cm housing.

[Bad93Cummins]

Would it be a worth it mod to do with only a 4" striaght pipe as a mod right now? dont plan on doing anything else till I get my gagues next monday/tuesday.

So the turbo lowers EGT's and helps the turbo spool up faster?

[SOOT4BRAINS]

I would say it would be worth it to do. Gauges would not be necessary with just this. I have found with most airflow upgrades (air filter, smaller turbo housing, 4 inch exhaust etc.) it usually lowers temps, but also keeps the temps down longer than before. I had 3 inch downpipe with 4 inch after that. Finally put stans 4 inch downpipe on. Only saw 25 degree difference overall, but the temps stayed cooler much longer while on a hard run. Once the temps are up, they won't come down till you slow down. A 16cm housing will spool faster, getting more air in before it gets hot, and is still plenty of flow on top end so it wont get too hot at higher rpm. The 21 spools so slow, its getting hot without the air, and when it does spool it just does not have the capacity to keep it cool. Smaller housing = more turbine rpm (more boost pressure) and starts spinning sooner. Too small, and its restrictive up top. 16 is great all around housing. I would wait a little and look for a used one though. Good luck

[SNOOT]

I,ve Heard that my year c.t.d. will benefit greatly with a 16cm2 housing is this true?? I,m only looking for about 250-300hp and still be able to tow ocasionally?

250-300hp is going to be hard to get with your auto and this turbo without getting hot even not towing...

[Bad93Cummins]

I would say it would be worth it to do. Gauges would not be necessary with just this. I have found with most airflow upgrades (air filter, smaller turbo housing, 4 inch exhaust etc.) it usually lowers temps, but also keeps the temps down longer than before. I had 3 inch downpipe with 4 inch after that. Finally put stans 4 inch downpipe on. Only saw 25 degree difference overall, but the temps stayed cooler much longer while on a hard run. Once the temps are up, they won't come down till you slow down. A 16cm housing will spool faster, getting more air in before it gets hot, and is still plenty of flow on top end so it wont get too hot at higher rpm. The 21 spools so slow, its getting hot without the air, and when it does spool it just does not have the capacity to keep it cool. Smaller housing = more turbine rpm (more boost pressure) and starts spinning sooner. Too small, and its restrictive up top. 16 is great all around housing. I would wait a little and look for a used one though. Good luck

would it still be fine with the 3" down pipe, as I just put the 4" on my truck and it has the 3" off turbo then 4" from firewall all the way back and would hate to have to replace.

[peobryant]

I would say it would be worth it to do. Gauges would not be necessary with just this. I have found with most airflow upgrades (air filter, smaller turbo housing, 4 inch exhaust etc.) it usually lowers temps, but also keeps the temps down longer than before. I had 3 inch downpipe with 4 inch after that. Finally put stans 4 inch downpipe on. Only saw 25 degree difference overall, but the temps stayed cooler much longer while on a hard run. Once the temps are up, they won't come down till you slow down. A 16cm housing will spool faster, getting more air in before it gets hot, and is still plenty of flow on top end so it wont get too hot at higher rpm. The 21 spools so slow, its getting hot without the air, and when it does spool it just does not have the capacity to keep it cool. Smaller housing = more turbine rpm (more boost pressure) and starts spinning sooner. Too small, and its restrictive up top. 16 is great all around housing. I would wait a little and look for a used one though. Good luck

would it still be fine with the 3" down pipe, as I just put the 4" on my truck and it has the 3" off turbo then 4" from firewall all the way back and would hate to have to replace.

This housing still has a 3" outlet, so you still use your stock 3" downpipe. When you step up turbo sizes, like an HX40 or S300, that is when you need the 4" downpipe.