2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Putting TII Tranny in NA car. I HAVE A QUESTION...

Old Mar 15, 2005 | 05:43 PM
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Question Putting TII Tranny in NA car. I HAVE A QUESTION...

I am puting a TII Tranny, driveshaft, and rear end in my race car. (second gen body. ) the engine is an N/A so the NA flywheel will be used.

I am pretty sure that i will need a Turbo II clutch disk, and a N/A pressure plate. does anyone know differant then this? or does anyone know for a fact that this is true?
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Old Mar 15, 2005 | 06:05 PM
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your t2 trans is not going to work with your N/A flywheel. the starter is to low on the bellhousing and will not touch the ring gear on the N/A flywheel. you will need a t2 flywheel and clutch setup. Other wise it should work fine.
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Old Mar 15, 2005 | 06:37 PM
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yea you'll need a t2 flywheel and clutch and starter
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Old Mar 15, 2005 | 07:08 PM
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Originally Posted by SDrotary-FC
yea you'll need a t2 flywheel and clutch and starter
Don't forget the slave cylinder too, I don't think the NA one will hit the release fork correctly.
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Old Mar 15, 2005 | 10:11 PM
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yes the slave is differant.


if i replace the flywheel, wont that throw the NA engine off ballance??

Last edited by speeddemon32; Mar 15, 2005 at 10:18 PM.
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Old Mar 15, 2005 | 10:23 PM
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Originally Posted by speeddemon32
yes the slave is differant.


if i replace the flywheel, wont that throw the NA engine off ballance??
No, the flywheel must mate to the tranny. I'm not certain what the counter balance does (or what it's balancing) but it will not throw the engine off.
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Old Mar 16, 2005 | 12:16 AM
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https://www.rx7club.com/2nd-generation-specific-1986-1992-17/s4-tii-drivetrain-s5-na-vert-385178/


Hopefully this answers a couple of your questions.
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Old Mar 16, 2005 | 02:29 AM
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Originally Posted by Parastie
No, the flywheel must mate to the tranny. I'm not certain what the counter balance does (or what it's balancing) but it will not throw the engine off.
ok dude. the tranny shaft grabs the clutch disc. and the counterweight must match the rotor type in your engine. however, the T2 sized flywheel will be needed so the starter can hit the ring gear. if it were me, i'd probably get an aftermarket lightened flywheel+correct counterweight. i think the T2 flywheel is heavier than the NA one...and the NA doesn't need anything else slowing it down.
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Old Mar 17, 2005 | 10:16 AM
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so let me get this streight

TII front ballancer
TT flywheel
TII clutch and pressureplate
TII tranny
TII Driveshaft
TII rearend.
N/A engine.

all of this will work together?

wont the TII flywheel and balancer be off since it is a N/A engine?
i have been told many differant things. i have also been told that you can use the N/A flywheel with a TII clutch disk, and a N/A pressure plate. with a N/A starter.

it seems like everyone has there own oppinion. does anyone know for a fact what it takes to put a TII tranny in a N/A engine?

for those of you wondering why i am doing this, i have a drag car in the proccess, and the N/A bridgeport will destroy the N/A tranny (in my oppinion) and i belive the axles are stronger to...

anyways, thanks for any help you guys can give.
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Old Mar 17, 2005 | 02:58 PM
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DO NOT change the front balancer, it is completely unnecessary and will throw off the balance of the rotating assembly. The front balancer, rotors and flywheel are a balanced rotating assembly. If you change any of these components, you will throw off the balance. Yes, the stock TII flywheel IS heavier. NO, you should not use it. The series 4 TII flywheel is around 28 lbs, the series 5 TII flywheel is around 23 lbs. The series 4 N/A flywheel is around 22 lbs (if I remember), and the series 5 N/A flywheel is around 21 lbs. Your best bet is to buy the correct counterweight for your rotating assembly and buy a lightweight TII flywheel. You can buy a VERY cheap flywheel from Dyson Rotary in Australia and save QUITE a bit of money!! Buy the counterweight from Mazdatrix. The addition of having a lighter flywheel will provide many benefits.
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Old Mar 17, 2005 | 03:15 PM
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forget mazdatrix and their $134.11 counterweight...buy one used on the forum. just make sure its from the right series of car. they can be had for like 40-60 bucks. if you want to stay in the states for the flywheel then ACT's XACT flywheel for the T2 is like $225 from a few places.

edit: and just to clarify the counterweight/balance thing. the counterweights balance the assembly depending on the ROTORS that are in your engine. leave your front one completely alone. the rear counterweight from an S5 automatic rx7 is what you need. the manual transmission cars had the counterweight built into the original flywheel, but the automatics have a seperate weight for it that can be used when you buy an aftermarket flywheel.

Last edited by bingoboy; Mar 17, 2005 at 03:18 PM.
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Old Mar 17, 2005 | 03:17 PM
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You can use the Racing Beat special clutch/pplate that allows you to use an N/A flywheel and a TII tranny.

225mm Disc w/turbo
spline - 6 puck

Part Number: 12527
Retail Price: $107.00


225mm w/turbospline - 6 puck (right)
(for use with 1983-92 non-turbo flywheel and 87-91 turbo transmission)
Race Clutch Disc

This special application Race Clutch Disc is designed for drag and road race use. The disc incorporates six (6) sintered copper pucks and a rigid hub for quick, positive engagement, greater fatigue resistance and improved heat dissipation. The sharpened engagement/disengagement characteristics of this disc require careful driver attention - this disc is not intended for street use.
As with all of our clutch products, it is built only from new parts.

Time Saving Tip: We strongly recommend replacing the throw-out bearing during any clutch work to ensure trouble free performance. Also, we recommend replacing the transmission front and rear seal kit when re-installing the transmission to reduce the possibility of leakage. (See bottom of parts list).

WARNING: None of the Flywheel or Clutch components shown in this catalog should ever be allowed to exceed 10,500 RPM under any condition. This same RPM limit applies to stock components. You must use an engine RPM-limiter to prevent excessive RPM. If your engine is capable of exceeding 8,500 RPM you must install a transmission scatter shield, or ballistic blanket. Failure to implement the above may result in serious injury or even death.
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Old Mar 17, 2005 | 03:23 PM
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Originally Posted by 2Lucky2tha7
DO NOT change the front balancer, it is completely unnecessary and will throw off the balance of the rotating assembly. The front balancer, rotors and flywheel are a balanced rotating assembly. If you change any of these components, you will throw off the balance. Yes, the stock TII flywheel IS heavier. NO, you should not use it. The series 4 TII flywheel is around 28 lbs, the series 5 TII flywheel is around 23 lbs. The series 4 N/A flywheel is around 22 lbs (if I remember), and the series 5 N/A flywheel is around 21 lbs. Your best bet is to buy the correct counterweight for your rotating assembly and buy a lightweight TII flywheel. You can buy a VERY cheap flywheel from Dyson Rotary in Australia and save QUITE a bit of money!! Buy the counterweight from Mazdatrix. The addition of having a lighter flywheel will provide many benefits.
Some of your info is messed up here. And the stock s4 n/a flywheel is 24lbs not 22, s5 n/a flywheel is 22lbs not 21, you have the s4 TII flywheel weight correct, and s5 TII is 22lbs.

If you currently have an s4 N/A engine with s4 counterweights, you can get an s4 TII flywheel with s4 rear counterweight (for lightweight flywheel, stock has it built it) and it'll work fine. If you get an s5 TII flywheel this will not work.
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Old Mar 17, 2005 | 03:23 PM
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Originally Posted by dDuB
You can use the Racing Beat special clutch/pplate that allows you to use an N/A flywheel and a TII tranny.
that thing sounds kind of harsh...

any idea how it works? seeing as how the flywheel will still be too small for the starter to engage its ring gear?
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Old Mar 17, 2005 | 03:28 PM
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Originally Posted by bingoboy
that thing sounds kind of harsh...

any idea how it works? seeing as how the flywheel will still be too small for the starter to engage its ring gear?
I don't know why you'd have to use the TII starter unless it doesn't fit with the N/A starter that is, but I have no direct experience with this so don't ask me.

He said this was for a "race car" so if it's harsh *oh well*
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Old Mar 17, 2005 | 03:37 PM
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hehe, well see the T2 flywheel is bigger in diameter, and thus the starter would be mounted further out from it seeing as how the starter bolts up to the transmission. so basically, if you are running an NA flywheel, the starter's gear doesn't reach the flywheel's ring gear. maybe they push start their race cars :p
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Old Mar 17, 2005 | 04:39 PM
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I hope somebody can clear up this starter issue, I like that RB clutch.

Marques
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Old Mar 17, 2005 | 04:44 PM
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Just a thought, anybody know if the N/A bell housing bolts up to the TII tranny? That would make the starter work.

Marques
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Old Mar 17, 2005 | 05:52 PM
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the NA bellhousing doesn't unbolt like the T2 does.
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Old Mar 17, 2005 | 06:05 PM
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I am running this setup on my 88 na vert- (stock s4 n/a motor)

S5 T2 tranny, act chromoly flywheel, auto counterweight
stock t2 clutch disk w/ act HD pressure plate
t2 starter, slave cylynder, torsen style diff, driveshaft, and rear axles

and she runs just fine. I am in the process of saving up for a built t2 motor, and elected to go with this setup so I could still drive it around.

Hope that clears things up.
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Old Mar 17, 2005 | 10:37 PM
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now we are on to something!!!! yes this is for a race car, so harsh engagment is just fine! (drag car)

i have been told that the starter hold in the TII tranny is no furthar out then the N/A tranny, the only differance is in the starter. the starter is built with it "pulled back" in the design, to accomadate the larger flywheel.

so with every thing we have said, the following SHOULD be true and work.

N/A front balancer
N/A engine
N/A flywheel
N/A starter
RB special Clutch
N/A pressure plate

TII drive shaft
TII rear end


any one dissagree? and why?
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Old Mar 17, 2005 | 11:22 PM
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Originally Posted by speeddemon32
now we are on to something!!!! yes this is for a race car, so harsh engagment is just fine! (drag car)

i have been told that the starter hold in the TII tranny is no furthar out then the N/A tranny, the only differance is in the starter. the starter is built with it "pulled back" in the design, to accomadate the larger flywheel.

so with every thing we have said, the following SHOULD be true and work.

N/A front balancer
N/A engine
N/A flywheel
N/A starter
RB special Clutch
N/A pressure plate

TII drive shaft
TII rear end


any one dissagree? and why?
if the starter thing is true then it should work. any idea if the NA starter will bolt to a T2 trans?
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Old Mar 18, 2005 | 08:27 AM
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Originally Posted by bingoboy
if the starter thing is true then it should work. any idea if the NA starter will bolt to a T2 trans?

true... true.... does any one know?
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Old Mar 18, 2005 | 10:32 AM
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I'm going to call RB at the end of the day if nobody answers, then we will know for sure.

Marques
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Old Mar 18, 2005 | 04:05 PM
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I called racing beat and asked the tech guy. he said that it was true.

N/A front balancer
N/A engine
N/A flywheel
N/A starter
RB special Clutch
N/A pressure plate

TII drive shaft
TII rear end


although he did sound to sure of him self at first. but later he did seem confadent.

i guess i will find out huh?
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