NitroDann's Long Awaited Garage Thread

[wozzah1975]

Any time you want to give me advice here Warren just do it!

Thanks,
Dann

If I had to be fussy I'd say I like my turbo manifolds to collect and be equal length, but I'm sure this unit will be fine for the application

Cheers
Woz

[NitroDann]

Of course, However as im sure you've worked out, the customer didnt require the benifits of an equal length tubular manifold, and therefor didnt want to endure the cost of paying me to build one

Ill be playing with some serious octopus inspired manifolds soon. Just need to find buyers haha.

Dann

[Vilko]

I take it he doesnt expect 250hp and instaspool in the same stup? :p

Im curious to see the intake setup for this. Plumb back bov im guessing?

Just going back about 20 pages, have you dynod the removal of the (anti) resonance chamber? Its meant to make you lose a couple of torques around the 3.5k rpm. Reference: solomiata

Other than that this has been a gid read, gave me some ideas and filled in time at work...

[NitroDann]

Yeah this manifold is fine for 300rwhp.

The advantage to an equal length manifold are scavenging, and supposedly having a very even bang-bang-bang-bang of exhaust hit the turbine helps lower boost threshold.
The advantages to a better flowing manifold (a nice tubular one) is more power.

Just like going from a cast manifold to a tubular set of extractors might add 10hp so does going from log to tubular.
Having said that, 10hp is only 1psi of boost away. the problem with adding boost is you add heat and lower the efficiency of the turbo.

So the absolute limit possible on the turbo may drop from say, 300rwhp to 280, due to manifold design. To combat this you need to use a bigger turbo, which comes with all the downsides of a bigger turbo (lag etc).

This setup is designed to replace a supercharger. The car has an ecu, injectors, clutch and intercooler, and made 180rwhp or so.
This turbo on a log manifold is good for around 230rwhp choked to the limit. As the setup is intended only to make as much power as the blower plus maybe an extra 20hp or so, the log manifold is the fastest spooling, best packaged, most police friendly setup possible. With this turbo, it will make enough power to keep the bottom end scared but not quite broken when its maxed out, and of course with the huge dump pipe and exhaust it will spool telepathically. If the owner wanted 300rwhp, he'd need to change to a 6 speed, bigger injectors, new rods, and a disco potato or larger turbo. Everything I've built would still be perfect for those needs.

As for my intake, Ive no idea on dyno figures. Id like to know but dont have the funds.

Thanks for the questions,
Dann

[JOJO82]

It's getting closer now Dann, can't wait for this to be put on my car...

I am sooo over driving my car NA at the moment....

I have to add again that I am so happy with the quality of the build, and know that if I ever changed turbos etc I will still be able to use the setup Dann has built.

I am aiming for around 140 - 150 rwkw with this setup as I was previously pushing 130rwkw with my supercharged setup.

[spikes]

I saw this in person and it looks awesome. The manifold/dump pipe made by Dann is really a prime example of being able to put together a turbo kit for cheap.

[ralt]

Hi.
Looking good. Just one question. How much boost in lbs. will you be running to achieve the quoted rear wheel figures?

[NitroDann]

It should make 200rwhp at around 12psi; whereas a long runner tubular manifold might make it at 10psi.

Dann

[rxmx]

Nice fab work Dann, I should have some info re flanges by end of the week.

[Vilko]

So the absolute limit possible on the turbo may drop from say, 300rwhp to 280, due to manifold design. To combat this you need to use a bigger turbo, which comes with all the downsides of a bigger turbo (lag etc).

This setup is designed to replace a supercharger. The car has an ecu, injectors, clutch and intercooler, and made 180rwhp or so.

As for my intake, Ive no idea on dyno figures. Id like to know but dont have the funds.

Thanks for the questions,
Dann

Main thing I was getting at is a bigger, laggier turbo would be required. I imagine hitting 250+ from a 1.6 would take a fair bit of boost, but ur right, im guessing a disco would get u close.

I think solo miata dyno'd them, I could chase up the exact figures, but its a pain on my phone. I guess its impact would also vary with supporting mods and high rpm power range.

Are you planning to go smaller cams when you boost your motor? I imagine yours would have a fair bit of over lap, or could you just mess with the cam timings.

Also, you still producing the cops?

[NitroDann]

Yeah still doing cops.

As for the disco, it will make over 300 easy.

I plan to go bigger cams when I turbo mine. Around 290* and heaps of lift.

I have adjustable cam gears so can dial out some overlap.

As for the solomiata dynos, part of the issue is that every single dyno is different, so its really hard to compare, but the turbo on this setup will easy make 200rwhp and a disco will do 300. There have been a couple of US GT2560 setups that have nudged 300rwhp.
but those were very optimised setups.

Dann

[Vilko]

Wow, what are the 1.6 made from? Ive got a bit of knowledge in sr20s and 300atw is a good figure from a disco, and thats on a 2L!

I was referring to removal of antiresonance chamber and the solo miata dyno. Too lazy to type properly on my phone and I end up having to type it 3 times lol.

[NitroDann]

Oh ok. yeah on the resonance chamber.

Engine capacity doesnt matter with turbos, if you can spool it, and get the air into and out of the engine a turbo will make what it makes.

The extra 400cc just helps spool it up sooner. Turbos use exhaust gas to spin them, if an sr20 without a turbo makes 150rwhp worth of exhaust gas, and a B6 at 4psi makes the same amount, then in both examples both engines will be spooling the turbo just as hard and making the same airflow rate. its just you have to wait to get to that 4psi on the 1.6L first.

Dann

Dann

[Dweezle]

Turbos use exhaust gas to spin them, if an sr20 without a turbo makes 150rwhp worth of exhaust gas, and a B6 at 4psi makes the same amount, then in both examples both engines will be spooling the turbo just as hard and making the same airflow rate. its just you have to wait to get to that 4psi on the 1.6L first.

Is that where an extra smaller turbo could come in handy??
Twin turbo 1.6!!!
Or S/C?

How Costly/time consuming is a Equal length Tubular Turbo manifold?
Is something like this useful?


This looks AMAZING!!


but is there really big gains to be had??

[NitroDann]

That looks like some of tims work.
The top one definately is.

These manifolds are baller as hell, and as good as it gets. These are what you want for a maximum effort race engine. This is what you want past 300rwhp for sure.

However if you have stock internals, you are strength limited to 250rwhp.
Because the log design flows perfectly well up to this power level, and has other benefits, I feel its the best design per dollar spent for most stock internals applications.

Im really enjoying the technical discussion guys, keep it up.

Dann