pornstarSR

i built a customer an engine a few weeks ago(here in santa barbara CA, we dont do this often so its something interesting i wanted to share)

99 civic SI was JRSC, decided to go turbo when i took him for a ride in my turbo D, so he wanted me to build him the engine and turbo it..
his target is 350-400hp

he wanted to go internal gate, so that made it somewhat tricky at first. he doesnt want too many shiney things to catch the eye of cop/others. dont ask i dont know. hes paying for it soo i get what setup he wants as far as that goes.

well turbo came in today.... along with some other parts needed for the install... still waiting on some others....this turbo should be able to supply what ever he wants.

but here she is....

turbo from atp turbo -

garret ball bearing gt3076WG - internal gate
Turbine
-Wheel: 56.5mm w/ 90 trim
-Housing: .64 a/r
-Internally Wastegated (No Actuator)
-Maps: Not Available

Compressor
-Wheel: 76mm w/ 52 trim
-Housing: Various a/r - they list is at a T04E style 4"inlet 2"outlet
-Inlet: Various
-Maps: Not Available

i want to bolt it up to my car..... (it would fit too)


going on this beast(already running in car for 2 weeks)


motor looks pretty tame... no shiny parts... no blues or reds....that was the target, to keep it low key but make power...

but its got it where it counts...

84.5mm bore RS sleeves (didnt want to go with them at first, but they changed to the stepped design similar to darton, so im alittle more confident)
9.5:1 comp weisco pistons, coated skirts
Pauter rods

etc...

lots more... but thats all you need to know for now.

i have a debate with a rotary friend of mine... he doesnt think this thing will make 350-400hp on moderate boost.... what do you guys think the boost pressure will be to get that?

Modified by pornstarSR at 8:11 AM 5/4/2005


Modified by pornstarSR at 8:39 AM 5/4/2005


Modified by pornstarSR at 8:39 AM 5/4/2005

mrDFWmechanic

thats a huge turbo

Dunc

What do you consider to be moderate boost? Mainly because I'd consider 20-ish psi moderate where as that'd be alot of boost to some. Mine made 375whp at 14.5psi with my setup (setup is in the cardomain.com link in the signature). I think you'll make 350-400 on moderate boost no problem. Looks great!

pornstarSR

well my rotary friend was saying he doesnt think it will make it unless it pushes like 26psi.....

i told him to go install some valves and come back and talk to me...

but i was think somewhere in the 14-18psi range

Dunc

I bet you'll make that mark at 14-18psi....I'd consider 22-28 the norm of the high end haha. If I hear 30+ then I am just say "holy god!"

Actually run 26, and be like "what's up now biatch!" But have a bet before that haha. The power will be in the tune though, so get a good tuner!

pornstarSR

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dunc &raquo;</TD></TR><TR><TD CLASS="quote">haha. The power will be in the tune though, so get a good tuner!</TD></TR></TABLE>

this is the key!!!

i dont know if i want to give this customer the option of going to 26psi.... he blew his b16 JRSC going full throttle on the freeway in 5th for like 10 min he said...

hmmmm..... i dont want him to gernade this one just yet... maybe later....

but for the begining i want it to be safe for the beating i bet hes gona give it

pornstarSR

anyone have any experience with this turbo....(the one posted above)

since atp has some interesting turbo combinations.... so i was wondering if anyone has used this or heard of it being used.....

0project dc2

iTrader: (1)

i make 400 WHP on the GT2871 on 20 psi. in terms of HP per psi my turbo pretty much puts out as much as a regular 57 trim t3t4.

15 psi should get you to 350+

Drag_On

What does the internal regulate at ?

pornstarSR

the regulator i purchased seperate from atp is set for 7psi

pornstarSR

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by project dc2 &raquo;</TD></TR><TR><TD CLASS="quote">i make 400 WHP on the GT2871 on 20 psi. in terms of HP per psi my turbo pretty much puts out as much as a regular 57 trim t3t4.

15 psi should get you to 350+ </TD></TR></TABLE>

ok thats what i was thinking... especially with a 90trim compressor...

whats your spool time on the gt2871?

pornstarSR

back from the dead.... went for tune finally

THIS TURBO IS COMPLETLY WRONG

t25 hot side housing chocks the crap out of it at vtec trasition and it only made 214hp at 10psi....


NO GOOD

and it was tuned well by shawn at church.

i lost the bet and i have to change it too......

SiRkid

well that sucks

Rod.

that sux...i know there were a lot of these that day. Hope you guys get the right one and get those numbers u were looking for

Tad

ooh
84.5mm
9.5comp

thats what i like to see!

pornstarSR

super gayness

t3/t04e or sc61 here we come... should have done this in the first place... but he wanted internal gate

TheShodan

iTrader: (14)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pornstarSR &raquo;</TD></TR><TR><TD CLASS="quote">anyone have any experience with this turbo....(the one posted above)

since atp has some interesting turbo combinations.... so i was wondering if anyone has used this or heard of it being used..... </TD></TR></TABLE>

Yes. Actually I've used a couple of these on a few honda and even an Evolution VI application not too long ago.

The boost characteristics for this particular application were pretty well for what I designed for its intention. This one is more of a short-range up front power and efficient combination that really sees the true benefits of the ball-bearing CHRA at about 13.6-14.0 psi on a Honda B18C1 or B18C5 sleeved engine. The wastegate portal on this one was I believe about 35mm in diameter, and this was not including the flapper door. because of the slightly varied offset of the .64A/R turbine wheel, inital spool characteristics were about 200rpms sooner than the .63A/R External turbine variant, with a drawback of upper end power. This was mainly because of the fact that it was T2 flanged, and the exhaust turbulence was channeled much more quickly than it's T3 variant.

This turbo made about 350-370whp at about 17psi depending of course on supplemental equipment (exhaust, downpipe, etc).

The one thing that I didn't like about the turbo was the fact that it used a .70 A/R compressor housing as opposed to the M24 .60 Anti-surge compressor housing. I found that when it wasn't coated, though the flow was much higher in the upper RPM band, that the turbine side had a tendency to lose efficiency at over 75%, and started to heat up, and really choke the upper band. This lead me to understand that this was more for a higher endurance road race or circuit race applications than it was for making Big power. That is NOT the point of this particular turbo.

In essence, 350-400whp is possible w/ this turbo, but don't expect it to give the customer "10 second slips" and all that.

I'm sorry you didn't like it. I used it PERFECTLY for road race, and 2 rally applications. I knew not to use it for a Drag Strip or BIG POWER application.

For the Big power application, the externally gated GT3040R or GT35R would be a bit more appropriate. Even the Internally gated GT2871 has as much power potential, but again, it is for QUICK RESPONSE with higher compression set, not BIG DRAG RACE 10 second stuff.

I hope this analysis helps a little.

pornstarSR

i understand and thank you for the info...

i wasnt aiming for a drag car and neither was the customer..

we are not aiming for giant power numbers... 350-400hp is not hard to acheive on the engine setup.... without a giant turbo. Good response and good power was what we were looking for... so far we got excellent response, not so good power power... so we just need to shift the scale up a bit.

atleast from what you say my initial research wasnt as off as i thought...... but in the end it still isnt working out for the setup... no saying its a bad turbo for other apps. but for the setup i built no its not going to work.

as far as spool time, i knew it was going to be quick and thats what i wanted, but i thought it was going to be like 4k maybe 4.5k... but during tunning the spool time(on a cast hks manifold) was alot less. 3psi was created at 2.3k....way sooner than i thought.... great response.... from what i can figure it was chocked off by the hotside housing and 64ar... live and learn i guess...

they do offer a gt3076 external gate which might be an option....i was looking into it last night.

once again thanks for the input.

Drag_On

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pornstarSR &raquo;</TD></TR><TR><TD CLASS="quote">i\
they do offer a gt3076 external gate which might be an option....i was looking into it last night.

once again thanks for the input.

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

tell the guy to go external and paint the damn wastegate..

Good luck on the next set up

pornstarSR

tial offers a black wastegate soo thats what we are going to go with..

i have a call into atp about swapping exhaust housings, it will probably need a new turbine also.... but it might be cheaper than buy a whole new turbo.

D@nnY

with a precision sc34 .48 hot side we made 460 at 22 psi with a Ls vtec with pistons and rods.

We changed to a sc6152e edelbrock intake manifold and 01 itr cams and it made 530 hp on the saem boost

cjburn

HKS also makes T2 footprint GT30 turbine houses meant for the 84 trim wheel. External wastegates in several different sizes. Probably cost you 200 bucks or so...

Tony the Tiger

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pornstarSR &raquo;</TD></TR><TR><TD CLASS="quote">back from the dead.... went for tune finally

THIS TURBO IS COMPLETLY WRONG

t25 hot side housing chocks the crap out of it at vtec trasition and it only made 214hp at 10psi....


NO GOOD

and it was tuned well by shawn at church.

i lost the bet and i have to change it too...... </TD></TR></TABLE>

What a dissapointment! Damn, that must suck I was so close to picking up that turbo but the cold side housing was too big to fit with my manifold.

Did the boost drop off at higher RPM's? I also have the T25 turbine with internal gate, but I have the GT28RS. My first dyno trip only yielded 220 WHP @ 8 psi, but only to notice that my boost drops down to 4 psi after 6000RPM. The back pressure with the small turbine housing (and log manifold in my case) always cause the wategate to creep open. After I fixed the boost problem with adjustable wastegate actuator, I was able to hold 8 psi to redline and made 286WHP and 238 lb-ft @ 8psi.

pornstarSR

tuner called me and said as soon as vtec came on it took a ****

i wil see the dyno sheet next week when the car comes back and i can tell exactly whats goin on..

and remember this fit on a gsr with an hks cast mani..... witn no modification....but i did run intake on driver side.