Engine/Transmission (1994 - 1998) Is 16cm housing that bad

[MDiPietro]

I have been running my 95 2500 5sd with a #8 plate and minor intake/exhaust mods for 5 years now. The truck runs well, but, well you know. Anyway the #10 with 3k kit should be going in soon and I was wondering if I should just put the 16cm in or just plan on *****footin it when towing the rv. Is the 16cm that bad for daily driving? I dont hot rod when pulling out, but dont want to drive something that feels slugish every day. Though I do not want high egts while towing . Just would like some feedback from you 16 people. Thanks

 

[pwknapp]

I sure liked my 16cm for a few hundred thousand miles. Didn't notice any lag compared to the help in more air and lower egt's.

 

[tURBOdIEZEl]

im having no problem's whatsoever running my 16cm2 housing. egt's are not an issue at all for me. truck doesnt lag at all either. hope that helps.

 

[Kernel]

I have had no problems with the 16 housing, temps are good to the point that empty I don't really have to even look at the pyro. Spool time isn't really an issue with my set up, daily driving is nice. If you want lag (smoke show) you go easy on the go pedal in the low end, and if you don't then you just get the revs up and go. The hottest I have seen my pyro is 1400* and that was on a dynodynamics loading dyno that put a hard load on it while making a run.



Scott

 

[Got Smoke?]

I've got a friend with a 94 2500 5spd with a #10 plate, PDR 370's, & 4K GSK.



He runs a 18. 5cm housing on his and drives it everyday, tows, hauls, farms, etc. I've driven it quite a few times and never noticed a whole lot of lag, however I've never really towed a lot with it... just a few quite relatviely light loads so I couldn't help you there. However, just general driving it does fine.



I am going to be getting cut DV's soon so I will either be going to 16cm or 18. 5cm housing.

 

[Hammer]

16cm housing will work just fine and will not be too laggy like the 18. 5cm would be. You will see a minor loss of boost with the larger housings but it will help you to cool the EGT's more efficently... ... ... ..... Andy

 

[chrleb1]

The only problem is that the 16 housing does not have a wastegate. When you are at high RMPs and high boost, your EGTs are going to climb. If you want a little bigger housing and not worry about lag and stuff like that, i would go find a modified 14 housing. As in modified i mean a bigger wastegate. I don't remember if Piers has a set up like that or not. The more air you are able to flow, the better off you are going to be. But i have run 16 housing for about 50,000 and it has worked out well. So it is just a matter of choice.

 

[y-knot]

I like the 16 cm sq turbo housing very much. It shines when the loads get heavy, like towing my 16,000lb trailer. The EGT's are very manageable, and power is good. The down side is the loss of low end boost, from idle off it will not reach boost as fast as the 12 cm sq housing. This may or may not cost you low end power, or starting line jump. What I did to help recover some of that lost snap, was insulate the exhaust manifold and turbo. This helped alot and cost very Little, plus it lowered under hood temps. I suppose if you never towed anything heavy or hauled large loads you might not experience the true benefits of this type of set-up.

 

[propuller]

Will a pac-brake bolt to the 16cm housing just like it does on the 12cm wastegated housing?



Kurt

 

[Dbonzi]

Will a pac-brake bolt to the 16cm housing just like it does on the 12cm wastegated housing?



Kurt

I have a Pac Brake on mine with a 16cm housing. Bolts right up.

Have Fun

Dennis

 

[JPundt]

16cm housing

I love my housing mines on a 97 with 370's and 3k springs I tow with it and its my daily driver. You should be fine and have no problems .

 

[Jim Fulmer]

If your at the point were you need a bigger housing (16 or 18. 5) then there should be no issure with using one, you will loose a little cruise boost because the turbo is running slower due to having a bigger set of lungs to exhaust.



Jim

 

[JPittinger]

If your at the point were you need a bigger housing (16 or 18. 5)



Jim

Hey Jim- I've been following along and was wondering, How do you know WHEN you need a bigger housing? Anything else besides high egts and high boost? I've been thinkin' of goin' to 370s and just figuring out what else will need to be altered.

Thanks, JJ

 

[MDiPietro]

Thanks for all the input. It seems like lag is minimal, and something I could live with. The fact is I run empty all week, tow light most weekends (3500#), and only heavy (8000#) a couple times a year. But when its hummin up that mountain loaded ,all is right

 

[QRTRHRS]

Will a pac-brake bolt to the 16cm housing just like it does on the 12cm wastegated housing?



Kurt

The 16cm housing is an inch and a half or so shorter on the exhaust side. You either have to move your exhaust system forward or purchase a spacer. The spacer makes up that difference exactly. Its just a short piece of pipe with flanges on both side. Pricey at about 90 bucks.

 

[Forrest Nearing]

remember, the early 1st gens came with a 21cm housing... the later ones came w/ a 18. 5... a 16 should be no problem.



Forrest

 

[SMorneau]

I don't tow heavy so keep that in mind. I saw more smoke, more lag, a little lower EGTs when towing, no improvement racing people in traffic and I would keep the 12cm housing if I had to make the choice again. I think the 16cm would be a much better choice if it were wastegated. Its hard to beat the 12cm for street performance with the stock turbo.



Scott

 

[Forrest Nearing]

why would the 16 be a better choice if it were wastegated? you would still see more smoke, more lag, and a little lower EGT's when towing, and no improvement when racing people in traffic...



now, if you add a set of 370's, and slide that plate forward, and your pyrometer needle swings harder than the tach, you'd understand why a bigger turbine housing is a necessity.



Forrest