I looked through the tech forums anc couldnt find it.

 

Yes.

 

And vice versa, S4 motor on S5 tranny?

 

well if the s5 motor hooks up to an s4 tranny im almost certain it will work vise versa

 

Yes. S4 -> S5 & S5 -> S4. You can even swap between NA and turbo models, but the flywheels have to match the transmission.

 

Applying some logic, what do you think?

Almost all the engines and transmissions are interchangeable in the sense that they will bolt together. You can put a 3rd gen transmission on a 12A, a RX-4 transmission on a 2nd gen, etc. But the devil is in the details. The flywheel, clutch components and starter must be matched to the transmission.

 

I didn't think about it before I posted the vice versa. Sorry.

 

So that would mean that an S5T engine will also bolt onto an S4 tranny?

 

Yes it will.

 

You didn't read the thread, did you?

Yes, an S5 engine will bolt to an S4 transmssion. And S4 engine will bolt to an S5 transmission. An S4 TII engine will bolt to an RX-3 transmission. A Cosmo 10A will bolt to a 12A 1st gen transmission. A 13BREW will bolt to a GSL-SE transmission. A 20B will bolt to a RX-4 4 speed. Etc, etc, etc.

Almost all rotary engines will bolt to a transmission from another rotary car. The bellhousing pattern has not changed much in 40 years. The devil is in the details though. Clutch stuff has to match the transmission and sometimes one of the mounting holes doesn't line up.

 

No I read it but I was still unsure. I was planning to do an s5 turbo swap into a N/A S4 and I'm new to this stuff so I had a few questions I was still unsure about. Thanks for the help though!

 

You'll have a hell of a lot more problems with wiring than with the transmission.

 

Yea I know and I kind of suck at wiring. I found an 88 N/A engine and trans. with 13k for only $300. Im trying to buy that and then add on a Camden supercharger.

 

Don't waste your money on a crappy camden kit. They want $2500 for a kit that they claim will get you only about 176 whp. You can make that kind of power without any forced induction.

The route you should be taking is a S4 turbo swap. It can cost under $3k, if you get an engine that doesn't need to be rebuilt, and you'll easily be able to make at least 50 more whp than with camden's kit; potentially more.

 

The Camden kit is a very poor choice. Just search "camden" for some reviews.

Turbo swaps are easy as long as you stay within your series. Only swap a S4 TII engine into an S4, and S5 into S5. Makes things a lot easier.

 

i was looking at this.. and i thought that the flywheel had to be matched to the motor.. weight issues and such.. like you can't use a S4 on an S5 motor. Because i have a S5 auto and i want to put in a manual and i have a S4 man. but i can't use the flywheel. right?

 

Yes, there are weight differences between S4 and S5 flywheels. If you are putting an S4 flywheel on an S5 engine, you need to swap on the S4 front counterweight. The easier thing would be to get an aftermarket light S4 flywheel.

 

^
The flywheel and counterweights needs to match the rotors...Are you really saying its okay to put a S5 flywheel and s5 front counterweight using s4 rotors? Thats the first I have ever heard of it.

 

Now that I've read up on the Camden supercharger kit it doesn't sound too great. I guess when I install the new engine I'll do a turbo conversion. Does anyone know where to buy a turbo conversion kit? if they still even make them anymore?

 

No, I screwed up and typed too quickly. The whole thing is a balanced assembly.

There are no turbo kits (see FAQ). If you want turbo, go with the TII engine from the start.

 

I looked over rx7club and i found a couple of threads of how to convert a n/a to turbo. i may just try out one of the ways to convert. Aaron cake. i actually seen a thread posted by you about this so I'll have to look over that.

 

If you decide to go the swap route, this thread has everything you need to know for an S4 NA to S4 TII swap: https://www.rx7club.com/2nd-gen-archive-72/s4-na-turbo-swap-details-813825/

 

I think you'll find that most of the NA-turbo info comes from me. Eventually you will run across "Project Tina" which is a fun read.

For most people though, a TII swap is the best and easiest idea.