FDNena

iTrader: (2)

Ok so i've heard they are crap....But that isn't true at all, They make 500 crank hp on supras...or 420-450rwhp, around what the BNR's can do, and they can he had for $500. (I can point out tons of posts on supra forums of people making that)

Alot of people say they are near (not totally) indestructable..
(http://www.supraforums.com/forum/sho...d.php?t=376039)


If someone would actually TRY to get it to work...

I could give you one to try.....

I'm thinking even if they only make a little more power, they are more reliable then the mazda stockers....

One possibility would be to have them completely controlled by boost controllers.

OneRotor

iTrader: (3)

That's the motor you're thinking of. I think that most people wouldn't want to deal with making a custom mani to mount those to the 13b, and they don't want to deal with another manufacturer's sequential turbo design, trying to make it work with the 13b. Do you know the make/model/size of the turbos?

FDNena

iTrader: (2)

I'll look up the specs, but i know they are better by a long shot..

As far as your other comments...

Anytime we change from stock we are dealing with custom mounts (unless you go BNR) and seq is seq.... a turbo is a turbo. How and when you fire them off is up to the system which is vacuum controlled..The turbos dont care if they are electronicly controlled or whatever...

Anyway, If I can get more power and at a fraction of the cost and still keep the seq, that'd be awsome...

dgeesaman

iTrader: (7)

That sounds like a very tedious job. Plus, there may not be space for them. Fitting a single is one thing, but fitting another set of twins could be difficult.

FDNena

iTrader: (2)

True that'd be one of the first things to find out..

Another link to power
(http://www.supraforums.com/forum/sho...d.php?t=382789)

OneRotor

iTrader: (3)

But the BNR kit and any good single kit will include a mani, whereas with the Supra twins you would have to fab your own mani.

FDNena

iTrader: (2)

or just an adapter plate?

Tim Benton

iTrader: (1)

Got any pics of the Supra turbos? The last graph you linked too shows the first turbo is similar to ours in that it hits around 3200 rpms to full boost. I think all it would take is an adaptor plate to mount it to our manifold after finding a picture of the supra setup. Your basically taking their turbos off their manifold and mounting them to our manifold.

Tim

ptrhahn

iTrader: (9)

Not worth the cost. The BNRs remain somewhat cost effective because they are heavily modded versions of the stock. Stock mani., stock etc....

Also, turbos don't "make" XXX horsepower universally. Just because one system makes it w/ X turbo, doesn't mean it applies to another system, which includes the motor itself, and the rest of the setup.

For the supras, you'd be scrapping everything but the actual turbos, and then building everything else custom. If you're going to do that, you might as well get two REALLY good, properly sized aftermarket turbos to start with. Also, AFAIK, nobody's successfuly made an aftermarket SEQUENTIAL manifold setup and I don't think you could do it cost effectively... so you're stuck w/ non-sequential OE twins that weren't sized for a rotary which I'm sure has entirely different characteristics than a 3.0L straight-6.

It's a false economy. They're not THAT durable to put up with all that.

GoodfellaFD3S

iTrader: (213)

Way too much work, esp if you want to try and keep them sequential.

They may make 500 crank hp (which is not 450 rwhp) on a poopra engine, but that doesn't mean they'll make that much power on a 13b.

meyers0912

its not the turbos that are holding the 13b back from more power.....larger single turbos have a hard enough time getting 500whp+; if you want sequential twins that make over 500whp in a FD, your only choice is 20b.

rotorbrain

well. . . you guys beat me to it. even if they could be made to fit. . . you still have to face the fact that any turbo we have on our cars will make more power on a piston engine. so, if they make 500hp on a supra, you can deduce that they will be right about the same power level as the bnrs. . . if not lower. . . and uh. . . lets guess which setup would win that fight.

puma

iTrader: (2)

yeah and the sequential system is completly different, not talking about fittnig the exhaust, the supra system is at least twice the size and the weight of the 13B.

really not worth it.

drivelikejehu

i say go for it. see what happens.

dgeesaman

iTrader: (7)

Since the OP mentioned doing 500hp more cheaply, nothing will happen.

Fitting a set of supra sequentials would be difficult and tedious, if it can be made to work. All that adds up to money.

Dave

DamonB

You can make an adaptor plate for a straight six to a rotary? Okey dokey.

FDNena

iTrader: (2)

Reminds me of a great line from a John Travolta movie (i forget which one now)

"Are you a mexiCAN or a mexiCAN'T"

FDNena

iTrader: (2)

In a simple sense, you're feeding 2 exhaust holes, doesn't matter 6cycl, 4 cycl, 8 cycl, rotary.

And not to screw to much up, basically you need to adapt where the exhaust manifold mounts to the turbos, then plumb the turbos to the Y-pipe.

Now the hard part is making it fit under the hood.. I know I could make them work..but fitting them under the hood is a whole other story.

http://www.supraforums.com/forum/sho...ighlight=twins

More pics of them on the motor
http://www.supraforums.com/forum/sho...d.php?t=358478


The 3rd pic down you can see the 2 holes that mate with the exhaust housing..
Those are what would need to line up with ours.

Or we could just avoid the issue all together and do this...

http://www.sp-power.com

Stock 2jz-gte engines with harnesses are $2400!! Stock internals are good for 1000hp.

dgeesaman

iTrader: (7)

That IS the definition of a manifold. I really, really, doubt it can be done with a simple plate. If it can be done I would expect the only halfway decent method is by welding piping and flanges into a traditional tubular manifold.

Yep, from here is seems so reasonable...

Anyway, have fun if you take on the project. However I think the lack of history on this topic is an indication of the difficulty and/or bang for the buck. So even if you made it work, you would have been better off working and spending on other things.

FDNena

iTrader: (2)

True like putting in the Supra motor...$2400 for a complete motor...cheaper than the BNR's

Also in that 2nd link..ther guys selling 180K turbos for $75...

At this point the price isn't a shocker...it's the fact the turbos have 180k on them~!
I'd like the see the Stock 7 ones even come close.

DamonB

So you're going to line up everything with nothing but a flat plate. Okey dokey.

Tim Benton

iTrader: (1)

What I was referring to is taking the turbos themselves off the Supra manifold, then seeing what needs to be done to fit them to the RX-7 manifold. After seeing a picture of the supra turbos and manifolds on an auction on e-bay, I'm not sure of the bolt pattern they use to bolt the turbo to the manifold since the picture didn't show that area.

Tim

TechTrix

iTrader: (2)

swaping a supra motor in an fd would cost about $10,000 by the time your done... on the supra turbos, what size are the exhaust housings? most likely a bit smaller than the stock fd ones.

FDNena

iTrader: (2)

Sure this is the Rx-7Club where you can do the impossible with a grinder and a buffing wheel

Ok when i said adapter plate, i miss stated..

It'd be stock flange off the manifold to a tube, to the flange on the turbos.
And adapter of sorts. But with would raise the turbos probably not giving them enough room.

FDNena

iTrader: (2)

true but take a Bone stock FD and put in BNR's to make 450rwhp, is gonna cost you $10,000.

bnrs
FMIC and piping
fuel system/injectors
Fuel computer
boost controller
motor porting
ignition upgrade
blow off