I absolutely love my current setup(refer to it here: https://honda-tech.com/forums/showth...2#post40766552 ), I did a lot of research and feel like the parts are well matched to efficiently achieve my maximum power goals. However, I am a little disappointed with my mid-range power(or lack thereof). The setup was built for drag, but I'd like to make it as 'streetable' as possible.

- Right now I'm really interested in converting to a twin scroll setup. Would this consist of just swapping to a divided manifold, divided turbine housing, re-tune, and adding an additional wastegate(I think I wanna do two of the new tial 38mm mv-s')? Are twin scroll turbine wheels different from single scroll wheels? Where, or can I even find a twin scroll t3 housing for the GT3567r(full-race) Would it essentially be a T67 housing?

- Other option is swapping my gsr cams for itr cams + adjustable cam gears.

- Also considered doing a direct port kit 50shot with window switch from like 4k to 5k or something?(up for suggestions)

- CO2 Intercooler Sprayer

- All of the above


You guys have any suggestions for better spool/throttle response? Thanks!

-Tulo

 

Just as a thought..

I see you had a mild port/polish done... If you got some more headwork done, and maybe add a cam that is aimed a little more at increasing mid-range power?

50 shot would definitely decrease the lag too .. Just make sure you factor that in with your tuning

 

a divided housing with a proper manifold would definately help it spool up faster, but why not just swap to a regular gt35r, its more than capable of making the 600whp you are at now and spools up a lot faster. you wouldnt need to change any parts besides the turbo. sell that and buy a new 35r would save you a lot of money as well.

sure a 50 shot would spool it up but lets be realistic here spool time is mostly noticed on the street and you wont want to use it all the time on the street. intercooler sprayer aint gonna do ****.

 

I've considered going to a regular 35r, but my setup was built with low to mid 700whp in mind and a 75lb/min flow rate. If I switched to a GT35R I think I would benefit from reducing charge piping size from 3" to 2.5", and 825hp intercooler to 750hp intercooler. Also the 4" downpipe and dual BOV's would be even more overkill than they already are. I've also got 750whp axles and a quaife. Plus I dream of going 9's one day without completely stripping every creature comfort out of the car.

My manifold has developed a tiny crack in the same spot for the third time now and thanks to Slowmotion's awesome customer service they have mentioned just building me a new one from scratch so I figured this would be the perfect time to switch to divided runners and flange. So it wouldn't be as expensive as buying a whole new manifold setup, just covering the difference in pricing between the two.

 

A 50 shot being sprayed for only 1k-2k rpm out of a big bottle would last a decently long time though. But you're right, I'd rather figure out a way to do it without the sprayz yo.

But then again, with a little bit of fine tuning to said nitrous setup, I could net 800+hp somewhere far down the road.

 

Any recommendations for cams with a good mid-range? Are ITR cams more for high(6k+)rpm performance?

 

Does anyone know what I need/where I can get a divided housing for the full race gt3567r?

 

Which exhaust wheel are you using? the P-trim?
Either way, going to a divided housing isn't going to help as much as you think. You have a big turbo for drag on a sub -3.0 litre engine. You don't have much in the way of options for "better midrange" on a 700whp setup. It's a matter of fluid dynamics, displacement and physics.

 

i believe atp sells a divided housing for the 35r , i would contact them

buddy club 3+ are known for midrange and have the same top end as gsr/itr cams

 

Hahaha...Physics says NO

 

I was hoping you would chime in! You helped me out a bunch like 6 years ago on Team-Integra and I know your info is based on credible facts/first-hand experience, so your comments are greatly appreciated.
When I ordered the turbo from full-race, I did not have any options as far as wheels or trims or anything. I have since called them a few times to find out more info on this turbo and they have been very reluctant to give out the details. Can you tell anything from this picture?



All I know for sure is .82 a/r turbine, .70 a/r compressor.
I understand that the mod isn't going to make a night and day difference, but even a couple/few hundred rpm might make it worth it since I need a new manifold anyways.

 

looks like the 3582r....

like i said check out atp i know they sell a divided housing for this turbo

whats weird is i had an 84mm gsr and had a quicker spool than you

 

Would you mind elaborating on this statement? I have a pretty decent foundation of the basic concepts/theories/laws behind automotive mechanics but I still have much to learn. One of the main goals of my setup is still efficiency and I suppose that is what I am after.
So what criteria is necessary to have a true 'twin scroll' setup?

 

Do you have your graph available online? And with what turbo? You did catch that this isn't a typical Garrett GT35R, correct? I'm not completely sure, but I believe it is a hybrid between a GT35R and a T67 turbo.

 

ahh 3567, that would explain some things, you can always use ls crank for a little faster spool also

i had a t4 3582r with .82 atp exh housing

all i have is the low boost setting (creep at the end) i believe this was 11psi

 

you can get some pro1's to help with mid-range.

 

That is a GT3567R. Uses the same 68mm wheel diameter exhaust wheel (aerodynamics of the wheel are unique), while substituting the standard GT40 wheel to a GT37 wheel (T67) in a .82 A/R V-band housing.

 

ALS anti lag system

 

Actually it's a .82 A/R 4 bolt housing. It's hard to tell from the photo's, but there is an ATP 4 bolt(2.5") to 3" v-band adapter on the housing. Not that that really makes any difference...

Is this the housing that I need to convert my Full-Race GT3567R to a divided housing setup?
http://www.atpturbo.com/mm5/merchant...Category_Code=
In my current situation, it would be worth doing if it netted me a 100rpm gain in spool-time. I would like to have a divided manifold in the event that I switch to a smaller more efficient true twin scroll t3 turbo sometime down the road. Thanks for the help!

 

Anyone?

 

One easy thing that could help and offer some help in other areas would be to make sure whatever system you are using to control boost has a gate pressure setting. Something as simple as a Turbosmart E Boost Street can be a big help with spool time.

 

I've got that covered, running an Apexi AVC-R, and I also have the hardware to set it up to be controlled by the s300.

On a side note, does anyone have any experience with the Sound Performance 'Quick Spool Valve'. I stumbled across it and it appears to be a rather crude yet practical variation of a 'Variable Nozzle Turbine(VNT)' design. It works by mating a divided turbine housing to an un-divided manifold. A butterfly valve sandwiched between the turbo and manifold flanges closes one volute when manifold pressure is below a certain level, re-routing that airflow to the single open volute, creating nearly(theoretically) double the normal air velocity and pressure seen at this volute. When a practical manifold pressure is reached, the second volute opens and the airflow is equally distributed to each volute, like in a normal setup running a divided turbine housing and un-divided manifold, and allows the air to flow unrestricted and able to make normal maximum air velocity.

I know, it sounds kind of jank, but VNT's, VVT's, etc are all not 'new' technologies and have all been tried and proven. This valve would essentially turn a .82a/r housing into a .41a/r housing for the crappy part of the RPM range, then opens it back up when necessary.
Thoughts? Opinions? Flames?

http://www.spracingonline.com/store/...ool_Valve/3659

 

I did some ruff calculations based on proportions and percentages using the results Sound Performance received and was able to modify my graph for an educated guess at the spool differences with/without the valve. Any opinions out there?!?