16cm housing?
Alright, I searched and found some information, but not exactly an answer.
The truck in my sig is my DD and tow rig. Right now, I have good response, and a buttload of power up to 2800rpm...then the EGT spikes and power drops off instantly. I am toying with the idea of either a 35/40 hybrid, or maybe a 40. In the meantime, what would a 16cm housing do to my torque curve? I have an airaid intake, 4" turbo back exhaust, #11 plate and 370 injectors. I was also thinking about going to a 10 plate and 3K gov springs, but I'm not sure. [duhhh] I guess I'm addicted to the power [roll] |
I tried a 16 on my tow rig for a while, didn't like the slow spool up, went with a 14
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A 14 cm housing works very nice with a 35/40 hybrid, too.
Your 370 injectors and plans for a #10 and GSK probably means a 16 cm housing is a better choice. 370's on your bigger pump help with the lag and the bigger housing helps when you get the rpms up. |
One of my concerns is that I can peg my 35 psi boost gauge (40 psi at the peg?) as soon as I romp the throttle accelerating in third. 1200° is pretty quickly seen, and EGT hit 1400 on the third dyno run.
After thinking about it, I don't think a 16cm housing will help all that much, seeing as I'm already out of the turbo's map. I don't plan on more than 400hp, but I would like to clean up the exhaust a bit. What turbo would be the best bang for the buck? I've been looking at the Dodgezilla with a 14cm housing, as I can find one of those for about $750 I'm also going to have the timing bumped up to around 15°-16° soon. |
I am looking into a new turbo[ 4"outlet] along with trans. e-brake ,4" exhaust ,then about your power level , the 1st thing I though after looking at your ? was that I came to looking at same turbo , but in your sig. no timing , go there before more parts , it seems like you've got the ability to flow and fuel but not the timing yet , and then the 3-4gsk also. Thats another thing about these sites when you want to build a truck you've got more than your own to expairament with.
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After some more playing, I realized that my EGT numbers are actually lower than I thought. [duhhh]
At 30psi, my EGT is around 750°-800°. With the needle buried, It peaks around 850°-900°. I don't know why I thought it was higher... Maybe I don't need a new turbo after all?!?! I'm a bit confused now :( Timing is next on the list, 15°-16° advanced. |
Originally Posted by seahawkdodge
After some more playing, I realized that my EGT numbers are actually lower than I thought. ...
I'm a bit confused now ... Your first temps indicated pre-turbo. Now, when you state 900° that is usually a post turbo temp. |
The temps are pre turbo.
The highest I remember seeing temps was about 1200...but that was on a steep grade and I was playing with it. Then there was the 1400 on the dyno, but that was at 3100 rpm in top gear. Still confused here. |
you saw what mine did.....40 psi & 1500 deg on the dyno.....
With your injecotrs, I'd expect about the same egt & boost as mine, but yer lower.....hmmmm.......must be that #11 plate. |
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