Dcashdollar

iTrader: (8)

I am just wondering, are rotary flywheels interchangeable?

mazdaverx713b

iTrader: (91)

yes and no.. it depends on the internals (year and weight of the rotors). the flywheel is very specific to the internals to keep the engine's balance. the 79-82 flywheels are identical and weighted accordingly for that year and the 84-85 are weighted accordingly. using an 81 flywheel on an 85 engien will destroy the rotor bearings not to mention the stationary gear bearings and vice versa.

Dcashdollar

iTrader: (8)

Well I have a 12A Turbo, what kind of flywheel should I put on the thing... It has a flexplate on it currently.

KansasCityREPU

iTrader: (9)

Without knowing what year the engine is for sure, get an automatic counter weight for the year of car the engine came from and an aftermarket lightweight flywheel.

j9fd3s

iTrader: (3)

buy an after market light flywheel!

12a Turbo SHOULD be like an 83-85 US engine.

mortenf

Yes, and no.. The 12AT has much lighter rotors than the NA version, so just using a flywheel from one of these, will not work very well..

Since it has a flexplate, i am assuming it has a counterweight bolted to it? If so, buy an aftermarket flywheel for pre 85 rotary, and bolt it up!

rxtasy3

iTrader: (2)

get the flywheel for ur yr model engine.

Jeff20B

iTrader: (13)

I would believe the 12A turbo had an '83-'85 assembly, as j9fd3s says, but the only difference is the compression depressions in the rotor faces being a little deeper to reduce compression a bit. The '83-'85 assembly is a little lighter than the '82 and older assemblies.

Dcashdollar

iTrader: (8)

I forgot to mention I have a TII tranny I am going to be hooking this up to.

I was reading up and people are saying to use the automatic rear counter weight with a TII flywheel, Turbo clutch, and turbo starter. This is all correct?

j9fd3s

iTrader: (3)

the t2/FD/rx8 uses a larger diameter flywheel, so the flywheel, clutch and starter are different.

if you have a 12A turbo engine, there is no stock flywheel that works with those rotors and a turbo transmission.

you need an aftermarket flywheel