ddub

So, I've been looking into flywheels lately as soon I'm going to pick up a lightweight one. I've been told that the flywheel will work for both series 4 and 5 with the correct auto tranny counter weight. But does this hold true for "turbo" flywheels? Are they different than n/a excluding counterweigh? I'm a bit confused about all this and wondering if I have a series 4 and use a series 4 auto tranny counterweight with a "turbo" flywheel will it work? I have a feeling I wont, but so far I can't get a straight answer from the people I ask. I've asked some sellers on ebay about this and they just keep telling me to get the correct series auto counterweight, so that's why I'm asking here now. When I emailed rx7store.net, though, they told me the ACT flywheels are meant for ONLY turbo, so that's what confuses me. Any input?

flamin-roids

I did a 5 speed swap using TII parts and here's what I did. I left the auto counter on and bolted a lightwieght turbo flywheel right to it. As long as you are bolting on a turbo clutch and tranny it will work fine.

SureShot

Same here.
Match the counterweight to the series.
The flywheel is the same.

Agent_D

iTrader: (2)

im going with the ACT XACT streetlite from the rx7store for my 88 GXL but yea, sureshot is right, you match the counterweight to the series.

razorback

i have s4 rotors in an s5 block. so i have a s4 front counterweight and s4 flywheel and i would need an s4 auto rear counterweight if i wanted a lightweight flywheel. you match th series of rotors that you are using.

RETed

Non-turbo versus turbo clutch kits (specifically the pressure plates) are different.
I bet the model specific flywheels are due to the different clutch designs.


-Ted

ddub

Yah this is what I was thinking. Which is why when I contacted rx7store they said none of the ACT flywheels would work on non-turbo rx7's.

I'm assuming all this is because of what Ted said about the clutch, and as well as the tranny being different (non-turbo or turbo).

So from this, I'm assuming that a flywheel meant for the TII (like the ACT's) will not work on the non-turbo even with the correct series counterweight, right?

ddub

Read my last post, like I said I contacted rx7store about this already and they said the ACT flywheels are TII only

RETed

That is correct.

There is a way to make it work though...

You need a turbo pressure plate but use the non-turbo clutch disc.


-Ted

andrew lohaus

so you're telling me a tii flywheel and a tii presure plate can be made to work with an n/a tranny if one uses an n/a clutch disk??

thats pretty sweet because tii light flywheels are mutch cheaper and abundant than n/a ones.

would there be any downside to this setup, either in terms of performance or reliability?

ddub

Say I'm using an ACT clutch/PP meant for a non-turbo right now, if I get a PP meant for a TII and an ACT flywheel that is meant for the TII, it will all bolt up together to the n/a clutch and everything just fine?

RETed

Yes, it should work that way.

The NA uses s 7/8" input shaft, and you need the NA clutch disc to mate to this.
This is why you can't use the turbo clutch disc, which is made to use a 1" input shaft.

The turbo PP should mate to the turbo flywheel.

Since the counterweight will bolt to either NA or turbo lightened flywheel, this whole combo should work.

Maybe you might want to run it past Kevin Landers or somebody who has tried it?


-Ted

RETed

Yes, it should work that way.

The NA uses a 7/8" input shaft, and you need the NA clutch disc to mate to this.
This is why you can't use the turbo clutch disc, which is made to use a 1" input shaft.

The turbo PP should mate to the turbo flywheel.

Since the counterweight will bolt to either NA or turbo lightened flywheel, this whole combo should work.

Maybe you might want to run it past Kevin Landers or somebody who has tried it?


-Ted

RETed

Yes, it should work.


-Ted

RETed

The only thing I question at this point is the engagement of the starter.
Maybe someone with both an NA and a turbo flywheel can comment if the "heights" are the same?


-Ted

flamin-roids

I was under the impression that the TII flyweel was bigger in diameter than the N/A flywheel. I believe the TII flywheel and the auto flexplate are the same size and the N/A flywheel is smaller.

RETed

Yes, it's 10mm larger in diameter, but the NA clutch disc should still fit under the larger diameter turbo PP.


-Ted

andrew lohaus

does that mean that the n/a starter wont mesh with the tii flywheel?

so what if it all lignes up if you cant start it.

damned achilies heel.

flamin-roids

Just use a TII or an automatic starter. I'm using an auto starter on my TII trans and flywheel. But as far as I know the N/A starter will not work.

andrew lohaus

will a tii starter bolt into the n/a tranny and work?

flamin-roids

So you are planning on using a TII flywheel with a N/A trans? I don't think that will work.

andrew lohaus

i didnt think so either, but reted got my hopes up. well if i just get used to push starting it, i think itll work.

RETed

That's a big question.
Someone go PM hIGGI to see if he can check the two flywheels.
Or anyone else that has a NA and a turbo flywheel side by side?


-Ted

RETed

No, NA versus turbo starters cannot be interchanged.


-Ted