Hey guys, i need help with my turbo selection. Ive been looking for the guy with 540whp to see what kinda setup he's running but i cant find him. Ill be running a Fmic, hks blow off, 38mm tial wastegate, haltech stand alone. Was thinking about running a 60 trim or 60-1. thinking about running 6 psi to start with but dont want a spinning monster. id rather have a little lag but not much. im sitting at 260 n/a but i have a hp goal of atleast 450 - 500. any of u guys have a clue on what amount of cfms or psi is needed? any suggestions on turbo size?

mods so far...
intake, hotshot headers, test pipe + catback, jwt flywheel, jdm cams, safc2

 

a haltech, for 450-500whp? complete overkill, but if you've got money to burn go for it, it would be badass. however, the turbo you are looking at suggests you're not made of money. 60-1s suck. don't get one. 60 trim won't get you that kind of power, so forget that.

the guy with the 540whp (538 actually) was hal, who's car is now owned by me, who's turbo kit has been for sale for a couple months. that dyno was done with nitrous though.

my opinion? dial back the engine management a bit to something a bit more affordable like a UTEC or EMU (I believe utec works on 5.5gen without too much trouble, check out Neitzsche's thread in the all motor forum) and get a turbo that doesn't suck and can easily attain your power goals like a GT3582R.

edit: btw are you planning on doing this with a stock motor or a built one, it's doable with a stock motor but your tune and setup had better be on point if you want it to stay together.

 

Seems like Jime's thread might be more helpful since 5.5 gen and 6th gen (Neitzsche) aren't totally compatible, and Jime is now using 5.5 gen software.

I know you knew that but here's the link for reference for the OP.
http://forums.maxima.org/showthread.php?t=530168

 

im goin with a haltech becuz my friend is building the kit for me and ima get it tuned by SRT and they mostly use haltech. what kinda turbo is on the kit u have? and what hp did it make without the nos? i have an extra block im gonna be puttin low comp pistons in and doin some head work on but i kno i can get a good 400 before then. and a gt35 isnt too small?
do u have a link u can pm me with the dyno chart..?

 

thanks for the info, i read through it but i still think ima go with the haltech. id rather go with a program my tuner knows how to use than be experimenting with a new program. jime is one heck of a guy though. there is no end to his all motormadness..

 

I have a T61. I never dyno'd it at the boost level I ran at the track. It probably made around 400whp on pump gas at 15psi on a stock 3.0L. There are guys making over 600whp with GT3582Rs... Flow-wise it is positioned between the T61 and 60-1 - all of which flow wayyyyy more than a 60-trim.

T04E 60 trim flows about 48lb/min max
60-1 flows about 57lb/min max
T61 flows about 67lb/min max
GT3582R flows about 62lb/min max

These max flow ratings all mean very little to you though because those are done at higher pressure ratios than any street driven VQ will ever see - up in the 25-30psi range.

At a typical PR used by a maxima, say 10-15psi, the GT3582R and 60-1 have similar maximum flow abilities, but where the GT3582R comes out ahead is in compressor efficiency (which means less heat generated by the compression of the air, which means cooler intake charges, which means more power and/or less likelyhood of detonation). The 60-1 is not as bad a fit for the 3.5 as it is for the 3.0, and my brain was working in 3.0 mode when I made my first post. Still the GT3582R is a better fit and is overall just a far superior turbo (higher efficiency, more aerodynamic wheels, lighter wheels, better housings, better spooling, less lag, etc), even though their raw flow numbers are similar.

At 10psi the max flow for each turbo is about:
60-trim: 38lb/min
60-1: 44lb/min
3582R: 48lb/min
T61: 53lb/min

 

thanks, very useful info. would a t67 be over kill? cuz i do have plans for running more boost later. whats the flow on that. i dont think it would be any lag from a 3.5 but i dont kno if it would be too much pressure for a stock motor right now.

 

Holla at me. I can work out the formula's for the turbo size...

Hmmm... Ball bearing or sleeve bearing? Ball bearing turbos are NOT rebuildable UNLESS you get one from Turbonetics or Innovative. Save some money and get a standard bearing turbo.

I would go with a 62-1 (make sure its a T4 hot-side). Its good for 500hp. There are a couple of people over at j-body.org putting down 400+ HP at the wheels with the 62-1. The T3 may work but it will choke the 3.5. Grand Nationals would choke with the Turbonetics cheater series turbos (remember.. the heads on the VQ35 flow WAY MORE than the GN heads and the VQ35 will rev about 1000-1500 RPM more). The cheater series turbos for the GN are basically T3/T4 hybrids. The 62-1 MAY be a lil laggy. That might be a good thing considering how much your car spins now.

Get at me...

 

If your looking to get 700+whp down the road get the t67 or gt37r(bb version of the t67). I also have a t61/t4 and it spools very easily on my car even at 6k ft of elevation. It shares the same compressor wheel as the gt35r. I think it would be a good choice, and isn't a wallet breaker. If you have some serious money laying around, I've read nothing but good reviews on the gt-k series from turbonetics.

 

i like the gt-k series, i think its the colors. even if i dont get the hp i want it looks good lol. all the other goodies are here, jus need to decide on a turbo.

 

Garrett T4/TO4R. Cold side .70 A/R P trim and Hot side .58 A/R. Flow 75 lbs/min. Comes with v-band kit, gaskets, flanges, and fitting
$1250
http://forums.maxima.org/showthread.php?t=532897

 

why not a use a precision sc61. It shares the same compressor wheel doesnt have the bb, but its a cheaper alternative

 

I was referring to the gt35r vs sc61

 

62-1 FTMFW!!!

I already worked out the numbers. At 8psi, the turbo wil be in the 74-75% efficiency island. With room to go! The 62-1 will support 600HP easily.

T04B... doesnt that have a T3 exhaust side? .58 AR? Hmm.. I think both the VQ30 and the VQ35 flow entirely too much air for a T3 exhaust housing. It may spool well BUT it will cause excessive backpressure up top. I will accept a little lag down low to make more power up top.