ok stuck between these two badass turbos... can anyone give me comparisons of when each of these turbos start spooling on a b16? My buddy with a gt35r doesnt start bosting til 4300 on his b18 so im wondering how much worse it would be on a b16.

Im only looking for 400whp but i want a very fast spool, not sure if the 35r is overkill for my goal.... thanks for any insight

 

GT35R on a built B16a that I did. That should give you some idea of the powerband you would get.

 

Definitely the 30R, B16's suck. lol

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PrecisionH23a &raquo;</TD></TR><TR><TD CLASS="quote">

GT35R on a built B16a that I did. That should give you some idea of the powerband you would get.</TD></TR></TABLE>

peak tq @ 8k+?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TurboJesse &raquo;</TD></TR><TR><TD CLASS="quote">

peak tq @ 8k+? </TD></TR></TABLE>

We didn't exactly have great control of the boost.

 

how many lbs of boost was that?

 

2871r would be tons of fun on the street, and should make your hp goals provided the rest of the setup is all straight

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Drkaccrd &raquo;</TD></TR><TR><TD CLASS="quote">how many lbs of boost was that?</TD></TR></TABLE>


25.5psi peak. As you can see from the graph boost was not held constant.

 

well its actually goin on a b17 not a b16 but they are pretty much the same spool wise...

so the 30r would be best huh? how much boost would it take to make 400whp on a 30r / topmounted / 9:1 pistons / ctr cams / victorX manifold? I was hoping to get there on ~20psi?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbotime &raquo;</TD></TR><TR><TD CLASS="quote">well its actually goin on a b17 not a b16 but they are pretty much the same spool wise...

so the 30r would be best huh? how much boost would it take to make 400whp on a 30r / topmounted / 9:1 pistons / ctr cams / victorX manifold? I was hoping to get there on ~20psi?</TD></TR></TABLE>

if i were to take a guess 15-16. if u only want to make 400whp, then a 30r is a great turbo to go for, a 35r would bo overkill.

 

Go with the 30r if you want 400whp, we are building a similar setup right now, GT3076r for the win.

 

a gt 3071 can get you 400whp with the best spool

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spoolin turbo s &raquo;</TD></TR><TR><TD CLASS="quote">a gt 3071 can get you 400whp with the best spool</TD></TR></TABLE>

easily, even a gt28 will do it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blinx9900 &raquo;</TD></TR><TR><TD CLASS="quote">

easily, even a gt28 will do it.</TD></TR></TABLE>

maybe a gt2871 but not a gt28 no way

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbotime &raquo;</TD></TR><TR><TD CLASS="quote">

so the 30r would be best huh? how much boost would it take to make 400whp on a 30r / topmounted / 9:1 pistons / ctr cams / victorX manifold? I was hoping to get there on ~20psi?</TD></TR></TABLE>

A lot depends on your turbine housing choice. The larger you go, the more power per PSI while sacrificing spool.

It took my setup 18 psi to make 383 WHP at 10.5:1 CR with a GT2871R but a T2 hotside (0.86a/r that comes with the turbo). I don't see why you cannot make over 400 WHP with a GT30R.

GT3071R gets my vote, and if you can run a twin scroll setup, that's even better

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spoolin turbo s &raquo;</TD></TR><TR><TD CLASS="quote">maybe a gt2871 but not a gt28 no way </TD></TR></TABLE>

checked atp turbo, your right, a 30r is a much better choice, a 2871 could do it but it be maxed out.

 

My buddy had a GT30r on his built b16 a few years back. Nice response and made excellent power.

OT: Ben Schaeffer from Woodbine MD in your sig?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">Definitely the 30R, B16's suck. lol</TD></TR></TABLE>

 

i had a 35r on my low comp built b16a full spool around 5000rpm and when you hit crossover it is rediculous. 30r is a more linear powerband but if you liek lopsided monster topend go witht he 35r. i had zero issue with lag on the street, with the 35r. now im going t70.

 

ok the turbo im lookin at is the gt3076r - is this good or bad for my goal? Im asking about this one specifically cause im getting it on a deal, if i were to choose a differently configured gt30r id need to buy new

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by illi Adik &raquo;</TD></TR><TR><TD CLASS="quote">OT: Ben Schaeffer from Woodbine MD in your sig?</TD></TR></TABLE>

yup ben schaeffer from daisy rd in woodbine, md. Guy is a crook, liar, cheat, and ******* most of all

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">Definitely the 30R, B16's suck. lol</TD></TR></TABLE>

 

what about a precision sc-6031e would that have the ***** to make 400whp on a b16 or no? If yes what would spool be like?

 

This is a fairly simple setup on low boost. Creeping a little, maybe to 6.5psi by redline. 0.63ar and 3" dp/exhaust and equal length manifold made in house. I would expect 380-390 at 15psi.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbotime &raquo;</TD></TR><TR><TD CLASS="quote">ok the turbo im lookin at is the gt3076r - is this good or bad for my goal? Im asking about this one specifically cause im getting it on a deal, if i were to choose a differently configured gt30r id need to buy new </TD></TR></TABLE>

30r = 3076r, 3071r=3071r, so the 30r is the one you want. a .63 hot side would be great.