Info on automatic transmissions from turbo Rotaries?

Whizbang · 12-19-2008, 02:52 PM

Once i get the ball rolling on my old school project, part of the plan includes using an auto transmission behind the engine i decide on. so what i am curious about is what are the differences of the auto transmission that come behind our rotaries, and are there other opinions available. Especially when determining gear ratios.

My5ABaby · 12-19-2008, 05:53 PM

From everything I've heard the FC auto option is pretty bad. The FC tranny seems to break fairly easily and is just an overall crap pile.

Whizbang · 12-19-2008, 06:06 PM

but what about the turbo cars?

My5ABaby · 12-19-2008, 06:26 PM

Quote:

Originally Posted by Low Impedance

but what about the turbo cars?

I was under the impression they only offered one version.

Rogue_Wulff · 12-19-2008, 08:14 PM

As far as I am aware, the only turbo rotary offered with an auto (in the USA) was the FD.
Why go with an auto? You have less gears at your disposal, so keeping the engine in it's powerband becomes a bit more difficult, and you will never have any use for the O/D gear. Even if you were geared low enough to make the O/D useable, O/D in auto's are notorious for being delicate and unable to handle hard use, which is why they shift out of O/D at the slightest load.

RETed · 12-20-2008, 04:52 AM

Some of the J-specs come with auto transmissions.
All J-spec FC's were turbo'd.
They were made by JATCO - Japan Auto Trans CO.
Those transmissions do not hold too much power - anything over 300hp is asking for trouble.

-Ted

Whizbang · 12-20-2008, 11:50 PM

trying to keep a possible old school project in the automatic format it comes in. I know IPT does work with the JATCO trans.

warwickben · 12-25-2008, 03:36 PM

best bet is find a good trans and get a plate made like rotary shack makes for useing ford t-5 trans.

12-19-2008, 02:52 PM	#1
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp iTrader: (5) Posts: 3,190 Rep Power: 20	Info on automatic transmissions from turbo Rotaries? Once i get the ball rolling on my old school project, part of the plan includes using an auto transmission behind the engine i decide on. so what i am curious about is what are the differences of the auto transmission that come behind our rotaries, and are there other opinions available. Especially when determining gear ratios. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

12-19-2008, 05:53 PM	#2
My5ABaby Sigh..... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (6) Posts: 2,377 Rep Power: 19	From everything I've heard the FC auto option is pretty bad. The FC tranny seems to break fairly easily and is just an overall crap pile. __________________ 1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles Community Service Manual RotorWiki "Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present."

12-19-2008, 06:06 PM	#3
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp iTrader: (5) Posts: 3,190 Rep Power: 20	but what about the turbo cars? __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

12-20-2008, 11:50 PM	#7
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp iTrader: (5) Posts: 3,190 Rep Power: 20	trying to keep a possible old school project in the automatic format it comes in. I know IPT does work with the JATCO trans. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

12-25-2008, 03:36 PM	#8
warwickben sa rat rod Join Date: Mar 2008 Location: tewksbury ma iTrader: (4) Posts: 408 Rep Power: 17	best bet is find a good trans and get a plate made like rotary shack makes for useing ford t-5 trans. __________________

12-19-2008, 08:14 PM	#5
Rogue_Wulff Non Member Join Date: Jun 2008 iTrader: (0) Posts: 310 Rep Power: 17	As far as I am aware, the only turbo rotary offered with an auto (in the USA) was the FD. Why go with an auto? You have less gears at your disposal, so keeping the engine in it's powerband becomes a bit more difficult, and you will never have any use for the O/D gear. Even if you were geared low enough to make the O/D useable, O/D in auto's are notorious for being delicate and unable to handle hard use, which is why they shift out of O/D at the slightest load.