Hi

I have an Australian dc2r 11:1 cr stock internals. I am weighing up the option of going turbo for low torque improvement. I am not looking at running anything stupid, maximum 8 psi to keep it reliable, streetable and keeping internals stock. My budget is 6.5k USD.
CAN ANY.ONE RECOMMEND A GOOD TURBO or give me some guidance on how to size one up?

I'm also looking for a nice turbo manifold that can be covered with a heat shield to make the engine bay look as stock as possible. I am planning running the intercooler piping under and through the stock airbox by getting custom pipe work done.

I want useable power, nothing that will give me traction issues all the time (unless my foot is real heavy) but boost by gear should help this and NO LAG

 

Hello! This is a topic covered sooooo many times it's insane. 8psi means nothing at all since it will vary depending on the turbo chosen.. For example; 8psi on a GT2860 is not the same as 8psi from a 6262.. Anyhow, sounds like you'd do well with that GT2860 I just mentioned, or maybe a GT2871. Something with about a 450CFM flow rate would probably be what you're looking for..
Cheers!

 

This is what I have pieced up on paper as in only looking at 250hp at the wheels

Gt3076r
8psi Actuator that i can get at a local shop
InlinePRO B Series Manifold
Walbro 255LPH
RC 440cc injectors
2.5" Custom downpipe

 

GT2860r

 

with 11.1 compression, 8psi will probably make over 300whp. I might suggest using 750cc injectors for some wiggle room and possibly up adding future power

 

to be honest, i drive the car once a month as it is now and it is already quick and fun to drive, so i am not chasing anything huge now or down the track.

 

‘I was just making a point that 8psi will make more power than your goal which pushes me to think bigger injectors. I would think 5-6psi and 450cc injectors will probably do it. When you have that high of compression you need quality fuel / lower boost/ or a real good tune. High compression on pump gas can get dangerous quickly if your not experienced

 

your best best is find a GReddy kit (at least manifold , turbo and downpipe integrator. And do that using a GT2871 or similar. nothing so large as. GT3076R. That is much too large.

 

Yea thanks Shodan - i need useable do not want to be breaking traction all the time which is why i also want to go for a boost by gear application.

I didn't think GReddy made kits anymore? Is that specific to an application? Piping i will get done at my local exhaust shop.

 

The kit is still discontinued. But there are still plenty of options of finding used components to be able to make that work. It's very difficult to make something look OEM without having to have it log style manifold.

 

That is why I want to go with the inline pro b series manifolds

InlinePRO B-series T3 Cast Iron A/C Compatible Turbo Manfold - Inline Performance Products

 

That requires a 5 bolt Ford style turbine housing for the turbocharger. So, that will limit some choices for turbocharger sizes and costs. Just something to note.

 

You can also go for something like this if you need more turbo options and flexibility.

GO-AUTOWORKS Stainless Log Manifold & Stainless Downpipe combo w/ Dumptube D16 D15 B16 B18 H22

or a complete kit like GO-AUTOWORKS Street Turbo Kit Honda Civic Acura Integra Del Sol CRX D16 B16 B18

 

Wow Thanks. I'm looking at getting all piping done custom so those kits might be a waste of money for me.

The plan is to keep the stock airbox and run the piping under and through it.

Since I am not going for massive power and just an improvement in midrange and no lag, is an internal waste gate enough or do I go for an external one?

Same with a BOV?

 

I could just purchase an adaptor if I was to buy the gt2860r which is T25?

 

The Honda manifolds are all geared for external wastegates. Check out ATP turbo as they make many adapter parts and custom housings.

 

The main appeal an internal one for me is so the engine bay looks as non turbo as possible

 

Going to the right place is more important, as the GT2860R has availability to be sold in a 5-bolt Ford style turbine housing. It's not just the Turbine inlet, but the downpipe you have to worry about.

 

Well, let's face it, you're trying to get this thing to pass your MOT (or "Ref" or whatever Australia's standards for emissions and use on highways is). This isn't just so that the car looks "sleeper", there's a real reason behind what you're trying to do, and that is to avoid penalty by fooling the techs as to what it is. You can't hide that fact using an Inline pro manifold, which was never made to work with an internal wastegate.

For those that don't know, Australia has some of the most stringent standards when it comes to having a turbocharger retro-fit pass their standards. It makes California's BAR standards seem like a picnic.

You're trying to do something like this:


Kenji Sumino's GReddy 18G B18C1 Engine

That's how it looks in finished form.
This is using an Air-to-water intercooler with a custom intake that connects to the compressor inlet and internally gated GReddy 18G (Similar to a GTX2971R) using an upgraded wastegate arm, flapper door and 35mm ported opening.

 

Exactly what I am going for, except I will get a heat shield made to cover the manifold.
You don't need inspections in Australia, just to hide a majority of components if a cop was too pop my hood.
What are my options with the inline pro waste gate port if running a wg internally? Can I not just block off the port with a plate?

 

those kits used to come with a steel heat shield. (Notice the two casted screw bungs on the manifold.)

you'll need to have one fabricated, and have it attached aft the exhaust manifold studs.

I'm not going to lie, you're going to be going through a lot of work to get that internal gate to fit on that type of manifold. The key is getting the right steel to fit over that wastegate hole. you're easily at over 815*C just from cruising around without even being under load.

unless you find an older GReddy kit, you've got a LOT of work to do where we might not be able to help much without some serious fab.

 

hmm..understood....what other manifolds should I look at then that retain AC and PS. Do the inlinepro's just not have the clearance for a turbo's internal WG ?

 

I'd

This is what I am aiming for

 

Not really, no.. Something similar to the GReddy or the ultra-rare HKS exhaust manifold. Or have one made.

Again, great system, all will need to use a lot of creativity and some serious fab

 

Something like this https://www.mpsgarage.com.au/shop/pr...turbo-kit.html