djtrini

Hey guys, well after having yet another issue with my built motor (spun a rod bearing)

Ive decided instead of driving around n/a while its at the machine shop. Im going to take this spare b18c (GSR) bottem end. Which is in MINT shape, and doesn't burn a drop of oil. And im going to boost it and still have my Blown fun lol.


Anyhow, what is a good safe PSI boost level to run on a stock GSR bottem end. And what kind of WHP can I expect to make with this set up.

My set up contains of the following:

2nd gen b16a head
CTR cams
Omni Power Full valvetrain
Ferrea Bronze valve guides, locks, seals etc..
AEBS intake manifold Ported to 68mm
Skunk2 68mm TB
B&M FPR w/ gauge
Hondata I/M gasket
Golden Eagle Fuel Rail
Rc 750CC injectors

Bottem End:
B18C (GSR) bottem end stock internals
ACT HD extreme stage 3 clutch
ACT Prolite 8lb flywheel

Tranny:
USDM Type R Transmission , New Gearspeed carbon coated synchro's

Exhaust:
Ramhorn Equal Length Turbo Manifold
3" Stainless Mandrel Downpipe
Kteller 3" Stainless Mandrel into 3" Apexi Universal World Sport 2 muffler

Turbo:
Master Power Full T4 twin scroll design. 50 trim with a.82 ar side

Charge piping:
2.5" stainless Mandrel Charge piping.

Engine Management:
Chipped p28 ready to run Chrome

TurboXS Dual Stage manual boost controller
38mm Tial Wastegate
Greddy Type RS BOV

let me know what you guys think

Thanks
Travis

djtrini

Forgot to mention. Looking to run between 10-12 psi on stock internals

bigbadboy

300hp is a safe limit

dunkd

your turbo is way too big.

but anyway just make sure you have it tuned well and there is no reason why you can't run 300whp reliably.

zexxbo

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dunkd &raquo;</TD></TR><TR><TD CLASS="quote">your turbo is way too big.

but anyway just make sure you have it tuned well and there is no reason why you can't run 300whp reliably.</TD></TR></TABLE>



and with everything else in your setup, why would you run stock bottom internals? if i were you and had that pretty sweet setup, id just go with some eagles and either used pistons or something cheap you can get your hands on..

oh and you wanna trade your golden eagle fuel rail for an aem fuel rail?

djtrini

Hey guys I know the turbo is a bit too big, but a few local builders are Guessing full boost at around 5-5.5krpm.
If I dont like the response of this turbo, it will be swapped out for a Garrett GT3076R.

I have a built bottem end that i'll be sending out to the machine shop shortly. Spun a rod bearing in it. So I dont want to chance it and use back the same crank. So i'll be getting a brand new crank and new oem bearings for it. It has Wiseco Pistons, Eagle rods etc...

dunkd

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by djtrini &raquo;</TD></TR><TR><TD CLASS="quote">Hey guys I know the turbo is a bit too big, but a few local builders are Guessing full boost at around 5-5.5krpm.
If I dont like the response of this turbo, it will be swapped out for a Garrett GT3076R.

I have a built bottem end that i'll be sending out to the machine shop shortly. Spun a rod bearing in it. So I dont want to chance it and use back the same crank. So i'll be getting a brand new crank and new oem bearings for it. It has Wiseco Pistons, Eagle rods etc...

</TD></TR></TABLE>

id swap the turbo out now. I can garuntee you you are not going to like that turbo size on stock internal street car. It will be boring to drive because you are always gonna have to rev the **** out of it to go anywhere. You don't even need a baller turbo like a gt30r, just sell your t4 and for the same price buy like a t3/t4 .60/.63 turbo... still pretty big and will make great power, but wont be as laggy as the straight t4.

I've been in a couple turbos that are straight t4 turbo, and they boring for the street compared to a car with a smaller turbo.

Schister66

You can make low to mid 300s reliably. My last setup made 275/194 and on my new setup i'm shooting for 320/230 on roughly 11psi but who knows exactly what it will make.

I think the turbo you chose is way larger than you need....you should get something in the range of a 57trim so that you have a usable powerband. My 60trim in my old setup hit full boost at about 4700rpm (thanks to a 2.5" dp and exhaust coupled w/ a log) and that was fairly laggy. My new turbo *listed in sig* should see positive manifold pressure around 2400rpm and full boost by 3200rpm. The turbo is roughly the same size as a 57trim too.

I think if you were to look around a little more before deciding to use that turbo, you would be a lot happier in the end...

djtrini

The Turbo im going to run should be ok for now.

I actually dont mind if it is a bit laggy either, I see what you guys are saying about the power band, which is why I built the head to rev to 9krpm no problem.

I do actually plan on swapping out this turbo to a GT3076R when I put my built bottem end back in.

Its more less temporary set up, as I have the turbo already, and the downpipe is already flanged for this turbo.
I think with the 3" DP, into Catless 3" exhaust the turbo will spool a little quicker.


Also guys, for 10-12 lbs of boost. What size wastegate spring should I be running? And what kind of Sythetic? 5w30, 10w30, 5w50?

your help is greatly appreciated.

Thanks
Travis

djtrini

I also went ahead and got my downpipe heatwrapped, and in a few days will be sending out my manifold to be Ceramic coated.

Schister66

i understand your situation of already having the turbo and just wanting to run it, but i dont understand why people use turbos that are so completely oversized for their goals. Yes, you're going to be boosted and the turbo WILL make power, but your powerband is going to suck. If you want to have a fun turbo car, the trick is to find something that is matched to your setup and use that....that's why the GT3255 that i bought is such a good buy....it will come on early and carry through the top end...not to mention its cheap and its very effective.

As far as the oil you choose....i ran Royal Purple 5w30 for a short while, but when it got really hot outside and i was rough w/ my car, i had problems w/ some oil pushing past the seals. Once i switched to 10w30, i never had the problem again....

Schister66

One more thing i just noticed....with that big turbo you're going to have really bad recovery/response time....the fact that you're running an 8lb flywheel isn't going to help that....you may fall out of boost during the higher rpms in 4th and 5th gear, but you will for sure fall out of it during shifts...

djtrini

hmmm you guys are making me question this turbo now. lol

Right now between shifts at 9k rpm. I fall to about 6200 rpm in each gear. So are you guys saying, dropping to 6200 RPM will make be fall out of boost with this turbo? I dont see how, but please educate.

Travis

not2slo128

imo gt2871

da_dude

I have to agree with the others. Your turbo is too big and your powerband really going to suck. But if you like it just run it. It's your car so it's your decision. We are just here to give you other options. Some maybe good and bad but when the smoke clear it's still up to you.

djtrini

Turbo pic

DA-nteg

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by djtrini &raquo;</TD></TR><TR><TD CLASS="quote">
Turbo:
Master Power Full T4 twin scroll design. 50 trim with a.82 ar side
</TD></TR></TABLE>

very effective indeed.

shant

1. keep the turbo. you have a built motor back soon.

2. im daily 430whp 15psi stock gsr bottom end 6 months no issues -traction


assuming you race track and want to go fast. nevermind what i have to say otherwise

s2kdre

damn u'll spool it by next christmas.

djtrini

Here's the specs of the turbo right off Master Powers website:

Product #: 802206
T04E Turbo
Turbine: A/R .84
Compr A/R .50

802206 TO4E TURBO MOT. 1.8/2.0– ACIMA 1,5 BAR
EX: TO4 58,0 RT: TA 56,5 PULSATIVO
.84 .50

drumking15

sure looks like a divided t3 flange to me

djtrini

Exhaust flange pic. Its a T3 Flange I know that for sure, when Jay aka SillySohc made me the manifold for the car, at first going by Master Power site specs he flanged it for a T4 turbo, when I met him up, sure enough the turbo flange was smaller than the flange he had welded to my manifold.
So he made me a new manifold with T3 Flange.

Any Insight on this?

djtrini

ahh ok sweet, so I should be good to go with this turbo?