Just curious to see if anyone has ever tried to use 2 stock T-II turbos on one engine. They can flow up to about 300 hp or so each. They severely fall off in power at higher rpm's due to being so restrictive and lack of compressor flow. I figure it would make some good top end power but low end would suffer. I'm only just brainstorming here. I do have one car with a big single already but I also have 2 T-II turbos lying around and another rotary that is begging to be force fed. Maybe I'll just have to try it and see what happens.

 

I know there were a couple guys in Australia doing this (or was it NZ?).
One of them was using a COMPLETELY STOCK series4 TII engine, running 15 psi of boost and hit just over 400 rwhp !! Not just a rumour either, he had the dyno to prove it b/c it was at a dyno event.

I have no clue what the power band would be like though.

 

The dynos down there read a little different than ours but still impressive if that really was a stock port. I wish I knew where the power came on at or how bad the lag was. I have a streetport, haltech, and higher compression, hmm....... I may just have to get out the welder and some pipe and see how it works. If it doesn't than oh well it was just my time and not much money. At the very least it will be a learning experience.

 

I was thinking about this also.

 

They generally use Mustang Dynometers instead of the Dynojets we use, and they read 10-15% lower actually (meaning it is even that much more impressive!)

 

its gonna lag a lot i think, but it should make great top end

mike

 

they're gonna be real laggy though. if only you could get a smaller hot side.

 

The most common chassis dyno in Australia is the Dyno Dynamics. Dynojets are very rare, and I am yet to hear of a Mustang dyno here.

The Dyno Dynamics are a Load Cell style of dyno and are quite different to the usual Dynojet in the USA. In general a Dyno Dynamics will read LOWER for the same car when compared to a Dynojet.

Hope this helps!

 

it will work perfect, as long as you have some pretty decent porting. especially if you do a secondary bridge. i dont think they will lag much worse than a T-66 with a 1.15. go for it!!

MWW

 

Rotarygod, you know that black third gen that i have at my shop? those turbos are REAL close to a TII turbo.


MWW

 

Dyson Rotary ( www.dysonrotary.com.au ) have a twin turbo setup. They are actually using hi-flowed turbos and the RX-7 has run 10.80 @ 130mph

I don't think the engine is stock either

 

Whoops, got the brands mixed up, you're right. (well ****, you live there!).

Dyson Rotary is bad ***!!

 

god damnnnnnn

I want to move to austrailia.

all the tightest rotarys seam to come from the land down under.

ajc13b comes too mind.
too much to list.

 

we need to make some aussie friends that will ship us some goodies

 

Just jump over to the Dyson web site and you can buy the manifolds and turbos ready to go. They're to suit 1st gen 7s though.

 

Marcus that's what I was thinking. I kept staring at that car the other day thinking the same thing. Since I have the exhaust sleeves with small runners I would think they would spool really fast. I just hope I don't melt the wheels. That black cars turbos spin a little easier than the T-II's though so I'll have a little slower response. Guess my big turbo is going to get its home in my GSL-SE while the twins go on the 2nd gen. It's a play car anyways and not a daily driver. It is ported as big as I could get it just short of going bridge so I don't think I'll have a lack of flow. This could get fun. I'll modify the flanges to work on the T-04 style that way if they don't work right all I'll have to do is just swap them for some that do. Cool I'm going to go for it!

 

Dyson rocks!!!! Found a picture of the twin S4 turbo setup they sell. Looks about how I plan on doing it. I'm not planning to run the internal wastegates either. I have a big Tial unit. Marcus it is the same one you have.

 

that turbo manifold is definately interesting.

 

I know a turbo builder that used to use 2nd gen compressor wheels and machine them down to fit the 3rd gen snails. Some of the dyno numbers have been anywhere from 385 to 430 rwhp using these turbos on the FD. The higher numbers were non-seq at 17 psi

 

I've been thinking about this for some time now. But i've thought about using T3/T4's instead of the TII's. They're just a bit smaller . Quicker spool i think. It's the manifold that keeps me up at night.

Marcus didn't you tell me that you made one of those manifolds and that it was a complete pain in the ***?

 

I saw the one Marcus built. It looks really cool and definitely like a pain in the *** to build. The T-II turbos don't spin as good as the T3/T4 turbos Marcus put on that car but I already have them lying around. I'd definitely much rather have the T3/T4 setup.

 

They put TII compressors in 20b Cosmo Twins. They're bigger than FD turbos. I think FD turbos are HT-12, Turbo II turbo is HT-18 and I think cosmos have twin HT-15's but I might be wrong about that.

 

the headers are not as much a PITA as making the DP's fit and be able to take them off and on without pulling the engine!! also external WG plumbing gets tight too!!


MWW

 

good point

 

the 20b cosmo we think is an ht15 and and ht12, the 13b cosmo uses 2x ht-10's

mike