Is there aftermarket twinturbo setup availible for fds3?
If so where? Is it better than single turbo?

 

Yes there is go to rx-7 store.net I will say it is better then a single,but expect to pay well over 5 large for it.

 

Why would you say it's "better"... Do you have the kit? Any experience installing or maintaining it? How does the power curve compare to a single setup? At what RPM do you reach full boost? Any dyno numbers? Any fitment issues?

And expect to pay way more than that if you plan on installing mods to SUPPORT an aftermarket turbo kit.

Good day.

 

Damn~

 

I would go with a decent single. Much more sipmle setup

 

It depends on what you want as a set up. Do a search on BNR in this forum and look around the single turbo forum to see what fits you best.

 

The kit is also non-seq. I dont really see the benefit of it over a single turbo.

 

I wish someone wold create a better SEQUENTIAL system. I don't know what aftermarket crackpipe the Mazda Engineers were using, but why they didn't decide to go with a much simpler system is beyond me.

 

werd

 

For those of you that haven't seen the MKIV sequential system, prepare to be astonished.....
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.


Yep, that's it boys, and their damn turbos can go over 20psi without even sweating. Now I know why the Supra's cost nearly $50k. They had to cover the cost's of R&D. At least they did their damn job

 

But its not a rotary.

 

I was talking about the turbo sequential system, NOT the engine

Let me know when you learn how to read

 

The RX-7 was the first seq system, so give the engineers a break for being the first to mass produce it.

 

But its attached to a piston engine. Are you suggesting that someone should look into installing a set of Supra turbos onto a rotary?

I can read fine, I am just stating the obvious for discussion purposes. Unless that is your Toyota diagram was ment for more instrumental purposes?

 

I think he was just saying it is simple compared to the hidious vac diagram we all know and love.

 

I don't know what you are talking about. I don't see a piston engine in the center of that pic....

That actually wouldn't be a bad idea, but their turbos and manifold would never bolt up to our engine, and the cost of having a custom manifold created just for those turbos wouldn't make any sense. You would be better off just buying upgraded twins, but we would still have the hassle of dealing with our vacuum system.

Even if we were to somehow adopt this sequential system, we would still need to figure out a way to control it....

It actually wouldn't be a bad idea for someone to start producing custom exhaust manifolds with high-flow turbos, and some type of small ECU to control the sequential operation. An ecu that can get RPM and boost readings in order to have it as efficient as possible. I'd love to see how well these little turbos would flow if they were connected to a tubular manifold. The Supra guys can use em up around 500hp, so they must be good for something.

 

slick

 

haha

A custom exhaust manifold would the the place to start. Let not cast it but actually make one out of welded steel and heat treat it before instalation.

The key would be to get the exhaust gas control valve to for the second turbo to open and shut on comand at a specified RPM. This would control ehaust flow and direct it into the first below this RPM and then divert it above.

 

Nope.

As far as I know, the Porsche 959 had the first sequential turbo system back in the 80s, and it WAS mass produced, just not in this country.

 

Not to nit pick but the 959 was federalized this year.

 

you mean it has low end torque...

lol

 

Actually I am going to ask around next month to see if I can get hold of a set of Supra twins in the Houston area.

I have been thinking about this all morning and as long as they fit in the limited space, the rest can be fabricated.

A benefit to owning an engineering firm is access to the fab facilities to make this and other ideas possible.

 

i think he was talking about the larger exhaust pulsations from the rotary.

i think not having a constant pluse would hurt that "bleed" type of system.

i think that's why mazda ended up with the pre spool system.

torque might have a role to play also. I don't konw.

 

Yea, it only took a year or two (or 15) for that to happen.

 

Can I be your friend?
Flybye <<< Engineering major