which would spool better

Mdub707 · Apr 25, 2013

That's huge... do you have oil to feed those things? What about fuel system?

g2shuck · Apr 25, 2013

pizza pig said:
s400 chargers are t6, but in situations like this its called A 372 because its still a 400 frame just with smaller turbine housing t3 or t4. ATS I know use these chargers and branded them a5k, my buddy has one in his duramax race truck. The Turbine and Compressor housing should be held to the center section with v-bands. The S300 frams are all bolt on housings.

But all technicalities aside, is the 72 overall bigger in size than the 66 when comparing side by side? You can easily tell a 300 frame from a 400 frame

Correction about the ATS A5k I had one and they are actually rebadged k31 turbos. Not arguing just wanted to let people know. I only know this because I went through this recently with Barder Turbo trying to get a custom turbine housing made for it.

sleeps · Apr 25, 2013

Mdub707 said:
That's huge... do you have oil to feed those things? What about fuel system?

if i do go that big, i will get dual pumps and injectors both from warren. and im putting together a fuel system now.

Pizza pig · Apr 25, 2013

g2shuck said:
Correction about the ATS A5k I had one and they are actually rebadged k31 turbos. Not arguing just wanted to let people know. I only know this because I went through this recently with Barder Turbo trying to get a custom turbine housing made for it.

I know they're pixie dust sprinkled k31's which is basically a 400 frame charger, although its not exactly an apples to apples comparison because they dont share a 300 or a 400 series shaft. :thumbup: Not even sure they offer the k31 chargers in the 3k lineup anymore do they?

OP: They're going to spool similarly, but that small t3 housing is probably going to need a gate on it. The 66/73/91 maxes out at about 650rwhp without needing a gate, and thats questionable. I see 1:1 WOT with mine at 48psi with 225's and some fuel pulled.

g2shuck · Apr 25, 2013

I believe only the A5K is a k31 now. Not positive though as the A5K is the only one I have persoanlly dealt with

2wd-fire · Apr 25, 2013

pizza pig said:
I know they're pixie dust sprinkled k31's which is basically a 400 frame charger, although its not exactly an apples to apples comparison because they dont share a 300 or a 400 series shaft. :thumbup: Not even sure they offer the k31 chargers in the 3k lineup anymore do they?

OP: They're going to spool similarly, but that small t3 housing is probably going to need a gate on it. The 66/73/91 maxes out at about 650rwhp without needing a gate, and thats questionable. I see 1:1 WOT with mine at 48psi with 225's and some fuel pulled.

How much power do you think you have to wheels? Just best guess

sleeps · Jun 4, 2013

Billet 72/73/.85 t3 divided

or

Cast box 66/74/.91 74 divided

Ok, I just bought a set of 205/100's. Going to start off a little lower for now, got a great deal on these injectors. I'm going to take my stock ones and send them out to make them into a big set when I want to step up again and add another turbo. Still not sure on size but anyways...

These are still the two turbos I have, which would be a better match for these injectors? And would I be better of putting higher nozzles on them? So, 205/100's or 205/150's with which turbo?

windrunner408 · Jun 4, 2013

I think you're going to want to stick with 100% nozzles for those 205s. The 150s seem to haze too much for my liking.

If I were going to run a non-VGT with those injectors, I'd go for the box 66.

MorganY · Jun 4, 2013

sleeps said:
Billet 72/73/.85 t3 divided

or

Cast box 66/74/.91 74 divided

Ok, I just bought a set of 205/100's. Going to start off a little lower for now, got a great deal on these injectors. I'm going to take my stock ones and send them out to make them into a big set when I want to step up again and add another turbo. Still not sure on size but anyways...

These are still the two turbos I have, which would be a better match for these injectors? And would I be better of putting higher nozzles on them? So, 205/100's or 205/150's with which turbo?

Dont use 150s

Sent from my SAMSUNG-SGH-I337 using Tapatalk 2

Pizza pig · Jun 4, 2013

205/75 and a 66/73/91 box turbo.

Even 100% nozzles haze, not as much as the 150s though. 75% is plenty on a street truck. 150s wont hold icp with 205s without fuel pulled back, i could t maintain on a 1.9pw tune.

Adamv7010 · Jun 4, 2013

pizza pig said:
205/75 and a 66/73/91 box turbo.

Even 100% nozzles haze, not as much as the 150s though. 75% is plenty on a street truck. 150s wont hold icp with 205s without fuel pulled back, i could t maintain on a 1.9pw tune.

My 150s have a moderate haze @ wot. Little to none at idle

sleeps · Jun 4, 2013

Alright with most people so far saying stay 100's and one person saying go 75's but nobody saying go 150's I think I may stay with the 100's that are already on them and see what happens. I wouldn't spend money to go down in size without trying out what I already have. If I were to put money into them it would be to go bigger.

Adamv7010: are yours 205/150's? Who does your tuning and what ICP are you holding at wot? What turbo are you running with them?

Also everyone, the 66 is brand new in the box so I was just hoping the 72 would work good being that's its used already, for the sake of the value of the 66. The 72 is g2shuck's old turbo that he ran with 225's.

Pizza pig · Jun 4, 2013

sleeps said:
Alright with most people so far saying stay 100's and one person saying go 75's but nobody saying go 150's I think I may stay with the 100's that are already on them and see what happens. I wouldn't spend money to go down in size without trying out what I already have. If I were to put money into them it would be to go bigger.

Adamv7010: are yours 205/150's? Who does your tuning and what ICP are you holding at wot? What turbo are you running with them?

Also everyone, the 66 is brand new in the box so I was just hoping the 72 would work good being that's its used already, for the sake of the value of the 66. The 72 is g2shuck's old turbo that he ran with 225's.

Ive tried many setups, and the 75% nozzles were my favorite, 100% close second. After really driving with the 150s on the street, and in the hot summer it wasnt worth it. I can tell you that on a 2.2pw tune you will not hold icp with 150% nozzles, been there done that. 225/100 cant run a big tune either without dropping icp.

Adamv7010 · Jun 4, 2013

sleeps said:
Alright with most people so far saying stay 100's and one person saying go 75's but nobody saying go 150's I think I may stay with the 100's that are already on them and see what happens. I wouldn't spend money to go down in size without trying out what I already have. If I were to put money into them it would be to go bigger.

Adamv7010: are yours 205/150's? Who does your tuning and what ICP are you holding at wot? What turbo are you running with them?

Also everyone, the 66 is brand new in the box so I was just hoping the 72 would work good being that's its used already, for the sake of the value of the 66. The 72 is g2shuck's old turbo that he ran with 225's.

Yea 205/150

Erics tuning for plugged ports.

As greg stated...a 2.2pw tune will not hold icp.

I run a 1.9pw tune and im nearly out of oil @ wot

sleeps · Jun 4, 2013

Adamv7010 said:
Yea 205/150

Erics tuning for plugged ports.

As greg stated...a 2.2pw tune will not hold icp.

I run a 1.9pw tune and im nearly out of oil @ wot

so in your opinion also, i should stay with 100's or go up to 150's? and what turbo do you run?

60powerplant · Jun 4, 2013

Josh on here has 225 and a 72 and he loves it. He has some videos of the truck and it spools fast for a 72. he had a 66 then jump to a 72. His build is on here under "my6.0build"

sleeps · Jun 4, 2013

60powerplant said:
Josh on here has 225 and a 72 and he loves it. He has some videos of the truck and it spools fast for a 72. he had a 66 then jump to a 72. His build is on here under "my6.0build"

hes running like 300's iirc.

Adamv7010 · Jun 5, 2013

sleeps said:
so in your opinion also, i should stay with 100's or go up to 150's? and what turbo do you run?

The same 66 you bought.

Personally I like my 150s but it doesn't get really really hot in the summer here.

If I had been able to get 75s when I needed injectors I probably would have done so.

I may very well swap my 150s for 75s or 100s in a year or so.

windrunner408 · Jun 5, 2013

pizza pig said:
205/75 and a 66/73/91 box turbo.

Even 100% nozzles haze, not as much as the 150s though. 75% is plenty on a street truck. 150s wont hold icp with 205s without fuel pulled back, i could t maintain on a 1.9pw tune.

I agree with Greg here. I'm even thinking about dropping down to a 75% nozzle in my 190s as I can see a VERY faint haze on sunny days when the truck is at idle. I think a 75% nozzle would be good for emptying an injector up to a 225 (maybe more IDK as I don't have that much experience with injectors).

Nevertheless though, I think that since you already have 100s you might as well just save yourself the money and leave your nozzles alone.

strokin6L · Jun 5, 2013

I love my 190/75's. Like already said...they are a perfect street nozzle. They do haze just a tad on a 190 injector, but once I get the stage 3 from Adrian I'm sure there will be hardly any smoke from the exhaust. I would like to eventually go to a 205/75 injector.