I will soon order a tII tranny from revolution rotory.
I read in a post that the older TII trannys fit much easier.

What years are the better fitting tranny, and how can I identify it from the others.

I talked to the guy at revolution, he said he could see there was a difference in the cases but the mounting was the same he didnt think it would make a difference.

how can I explain to him how to tell the difference.

or shouldnt I care.

 

S5 tranny is better i believe it has better shifter bushings..


That is the only difference i can think of, but you might want to post in the 2nd gen forum..


-Zach

 

I am going to my 82 shift linkage on the transmission so I dont think that matters.

would it.

 

No, it wouldn't


But you still might want to ask in the 2nd gen forum to make sure there are no other differences..



-Zach

 

Ask Setzep. He is the most knowledgable one here on TII tranny swaps.

 

if u have a N/A 13b i'm assuming an SE then why wouldnt you leave the tranny. Sounds like a waste of time to me.

 

According to him He wants to supercharge it with an Atkins supercharger, it's in his other thread Turbo II or Cosmo Block, which one is better?

 

ahhhh now I see....I spoke to soon....

 

Stezipt or whatever his name is had a great thread on how to out the old linkage on the TII tranny, i couldnt find it.does anyone have the link.

it should be in the archive.


Direct freak, your signature is on one of my posts also

 

I believe the S5 actually has better bearings in the box. Making it a slightly better box. Although, I don't really think it would matter too much.

Externally I don't think there are any differences, but they must have someway of telling them apart. Maybe a serial number or something.

Good luck.

 

The S5 has more ribs on the case (closer together) than the S4.

Also *I believe* the S5 has different mounting.

 

I believe you're right. From what I've heard it's not worth using the Series 5 box in a First Gen. as it's harder to mount than the Series 4.

 

The only downside to having a TII tranny is the cost.

 

I'd get a S4 box they are a lot easier to mount into a FB. The S4 boxes have a flat area just like the n/a transmissions do, all you have to do is space the transmission upwards 3/4" with a block of aluminum, steel or whatever. You can see the pic's here ---> https://www.rx7club.com/forum/showth...threadid=75879
The S5 boxes have a "cradle" shape mount that you have to fab something up to make it fit, ask NOTA V6 he knows all about this problem.

Here is the thread on how to modify your shift rod and tube to fit the FB chasis. https://www.rx7club.com/forum/showth...5&pagenumber=2

 

thanks alot setzep,

now, how do I explain to the guy how to tell the difference between the two.

 

The Ribs are closer together on the case for the S5

 

I used the stock tranny mount, and cross member. Redrill the holes int he stock tranny mount and your good to go

Space the trans down about 3/4" inch and the driveshaft looks pretty good in there

 

thanks for all the help, I got all the info I need

 

I think the S5 ones have 5 ribs around the gear case while the S4 have 3.