What Housing Are You Using?

[R.E. Miller]

I thought this pole stuff could be fun and help me make a desision for which to purchase for my pick-up. Thanks.

 

[BushWakr - RIP]

Shoulda gone for the 14^2 though. I will change over in the future.

Regards, Bob

 

[Midnite]

I'm running the stock 21. 5 cm^2, but I'm planning on getting a non-wastegated 16 from Piers soon. I'd like to find a used one, but haven't had any luck.



Mike

 

[Matt S]

If you can afford one, go with the 14 cm2.

 

[19Kgvw]

My '93 has the stock 18 cm. I'm toying with the idea of installing the 16 cm but am worried about increasing my EGT to much. With the mods I have, I've got ample power for my application. What kind of increase in EGT would I be looking at if I change to the 16 cm?

 

[JFitzgerald]

What size for my application?

I'm running stock, but considering a smaller housing to go along with pump adjustments soon. What are the criteria for choosing the best size for the application?



With 3. 54 gears and 33" tires, my thinking is that I need strong, early boost at low RPM. I will be towing approximately 10K lbs. on a gooseneck. This will include some trips through the mountains. This is also my daily driver, so I don't want any adverse effects there.



I hear all sorts of opinions - 12, 14, 16. What to do?

 

[Grey Wolf]

I have the 16cm housing with the 180 HP injectors, K&N, 3 1/2" exhaust, no pump adjustments. I have not seen an increase in the pyro temps just a decrease, The max I've seen in boost (No heavy towing yet) is about 22PSI. With this combination I have a nice seat of the pants HP increase with no loss in fuel mileage and the housing eliminated the lag completely.

 

[BushWakr - RIP]

Grey Wolf's numbers are about the same as mine. You should consider the 14^ if your using the 18 now.

I went from 18 to 16^ and find it too subtle for me. The 16 does spool up quicker than the 18^ without any temp problems. (atleast for me)

My younger brother has the 14^ Banks and it spools up even nicer. I'm running the 3. 54's with 33" tires and would like the quicker spool of the 14^ but $$ were an issue at the time I got it. All in all its ok, just a bit soft still in the bottom end.



Regards, Bob

 

[J DeMaio]

Guys, I'm somewhat confused With a smaller turbo housing won't E. G. T's go down due to the increase in boost. I have a 1992 that has the 21 cm^ turbo housing, it's bone stock. I have a set of gauges to put in and want to go to a 16 cm^ to get rid of turbo lag. I also want to advance timing and turn up the fuel a bit. Not sure what to do for a little more power. Any suggestions would be appreciated. Ready for real Cummins power

 

[wrk2mtch]

EGT's go up as your housing size goes down. Because of cost and EGT worries I'm going to go with the 16cm housing. I test drove an early '92 D-350 with the 21cm housing once and I couldn't believe how slow it was! J DeMaio, you should see a big difference with the 16cm housing.



What I don't understand is the 2nd gens. I think the biggest they came with is a 14cm and my understanding is that the 24v autos have 9cm housings!

I don't see how they can survive without EGT problems. Must be the newer pumps, wastegates and bigger intercooler I guess.

 

[Wayne M.]

The 16 was on there when I got the truck. I Have the original as a paperweight.

 

[R.E. Miller]

Egt's

I thought the same things about the truck with smaller housing, but don't forget that re-timing the pump is also important to deal with the extra boost that now comes on sooner. The newer trucks may have different timing set-ups to accomidate the smaller hairdryers.



Another thing I have never found a straight answer on is if the valves on the second gens are physically larger then the first gens and if the heads and cams differ.