hornbm

is there a howto any where on removing the s5 N/A rats nest?

I'm swaping an 89 motor into my 1st gen, and would rather not reconnect the emmissions stuff. But i'm not sure what I need and what I dont need.

SO a howto with pics would be great if anyone has em.

dr0x

Ill tell you right now, there isnt 1 damn good write up for this anywhere, much less pictures. I could tell you how to remove acv and airpump (simple as hell), I havent done anything else yet besides remove ps.

hornbm

man... that sucks.

We have like 10 writeups floating around in the firstgen forum.

Let me ask this, would anybody consider writing one up? It seems like it would be a REALLY good thing to have around.

Also are there any problems that arise from removing the rats nets? I've heard stories of the engine never really working right, and really stinky exaust.

I would think those things would only occour if the removal wasnt done right.

Moxeys93RX7

i just removed every piece of emissions on a s4 about 2 weeks ago. i have the s5 shop manual so the few things that are different wouldn't be hard ot figure out. if you need help hit me up on aim, moxeysrx7@aol.com

600HP CLUB

there is alot of good write ups actually but their only write ups no pictures here is one that i know of

http://devils.eng.fsu.edu/~bmatt/RX-7/emissions.html





these are mines

https://www.rx7club.com/forum/showth...hreadid=135015

https://www.rx7club.com/forum/showth...hreadid=120701

-mike

hornbm

dang....... all of these say to remove the cats at the same time. I need to keep saving for my RB exaust system.

It seems like a shame that I'd have to connect the rats nest, just to disconnect it like a month or two down the road?

Better yet, has anybody done this while keeping the airpump, ACV, and the cats?

NZConvertible

The ACV won't work without the solenoids and vac lines, so the air pump will be redundant and the stock cat will clog. You need to ditch the cat or get an aftermarket one that doesn't require air injection.

As for removal, you basically unplug and remove everything and cap any open nipples. You'll need to rerun the line from the manifold to the FPR, as this normally goes via a solenoid. Note that the VDI and 6PI systems won't work if you remove all this, and that'll cost power and torque. You should download the NA EFI chapter of the FSM for www.fc3s.org for reference.

pratch

The only one I'm aware of is for removal of the rats nest in the 1st gen. It's well documented with pictures (shameless plug).

I'm sure a lot of the technical information is similar, but I'm not going to swear on it. Just click my sig to find out if there's enough info for you to feel comfortable.

pratch

Oh, perhaps when I get my 2nd gen to swap the guts into my FB I'll be able to come up with a similar 2nd gen write-up? No promises, but we'll see what I can do when the time comes.

MazdaRx7Racer4Life

what exactly is the rats nest? sorry, don't know much about emissions

Samps

Hummmmm,

- fuel pressure regulator needs to see manifold vacuum

- boost pressure sensor needs to see manifold vacuum

- fuel lines will need to be made longer to reach the rail

- VDI and 6th ports need to be accounted for

- A vent must be put on the oil filler neck

there are a few other small things that may effect your car depending on which options you have.

Ryde _Or_Die

Just gut your cat and precat. Problem solved.