Hi guys!

My name is Patrick, I'm from Europe and own a 1st gen rx7 build 1981 116hp. (also owning a FC3S S4 TII and an 1991 jdm fd3s)
The 1st gen was my first car back when i was 17, I'm 26 now. I haven't driven the car for 6 years now und put it into storage.
Now it's time to reactivate this beauty

The car has a new paint job, no rust and a (near) complete interior!
I've put the car into storage years ago because of a leaking carb. After cheap-as* rebuilding the carb, an oil cooler line started to leak. I've had no time and money years ago, so I've decided to dry-store it.

I don't want to mess around with the old 12A engine.
I've now found a good deal on a stock ported '86 s4 13B NA engine with 65.000km on the clock. The guy attached a J.W. intake manifold with a 600cfm Holley 4160.

The carb game is completly new for me, but I've owned/own and tuned several EFI cars.

After searching around on the forum I've read bad sings about the Holley carbs. Also I think that the 600cfm carb will be too big for a stock port s4 13B?

I want to rebuild the engine for pre-maintenance reasons. I don't really car about all-day driveability, so if a big streetport or a bridgeport will get me into the "working" range of the 600cfm carb, I will go for it.

What are my options/your recommendations with this engine/manifold/carb combination?

Every input is welcome. Thnaks in advance for your help!

 

I didn't have an issue out of my 600 cfm holly with my stock port 13B. Don't really notice any difference on the street port either.

 

thanks for the input!

Good to hear that it is not impossible to run a stock port 13b on the 600cfm holly... This would be my prefered solution... call me cheap bastard

I don't really want to have a real performer, I just want to have my loved oldscool rotary back on the streets with a strong engine, wheels, a nice drop and fender flares

 

if i recall correctly, even racing beat used/sold a modded 650cfm 4 barrel holley for normy 13B's

 

I think they even have one for a 12A, but that would be like putting a VM32 on a Honda Monkey...

I don't think Holly makes jets small enough for that purpase.

 

Do you mean they don't make jets small enough for a 13B stock port application or for a 12A stock port application?

 

the 12A. People stick the holly 600 on 12A's but it seems like too much carb for a little engine. (not that the 13B is THAT MUCH bigger)

 

I ran a holley 600 on my stock port 12a it ran awesome, I went to fi when I went with a bridgeport.

 

Hey guys,

Thanks for all your input. I was reading a lot the last day about carbed 13B's and I've found out that carbs are really a totally different world. As I've never tuned a car myself and I'm more familiar with FI, I've changed my plans for the 13B in the first gen.

I also own an FD3S, running on a Haltech Platinum P2000. The new idea is to use this ecu also in my first gen. I will make the wiring harness the same (regarding in/outputs) so that only have to change the maps when swapping the ecu from the fd to the fb and the other way.

I've seen some nice ITB setups and this is definitly the way I want to go now. I also have the stuff flying around (2 stock FD pumps, 1 255lph walbro, 1 bosch 044, ton of sensors, wires, connectors, AN fuel lines + fittings, stock fc coils, IGN-1A coils, injectors etc.)

Do you guys have some suppliers for bolt-on ITB systems? so lower manifold + (if needed) upper manifold + ITB's + fuel rails + TPS + (if available) airbox...

I like this setup from extrudabody very much something like this would be great!



http://www.extrudabody.com/servlet/t...ary/Categories

2nd question:

Is there a kit out there to use the 12A frontcover on the 13B with a trigger wheel + sync/ref sensors? something like the stock REW engines have.

thanks for all your input!

 

I'm pretty sure you can run the RB dual Weber manifold and get ITBs that fit and go from there for a setup similar to what you have in the pic. Racing Beat makes a conversion engine cross-member for about $100. As for timing most guys use the fc cas but, I've seen one or 2 running trigger wheels a search should bring them up. Sounds like a good set-up you have planned old-school look for the intake, modern electronics.

 

Isn't this cross member only for mounting a 13B with 12A front cover into the fb chassis?
my understanding is, that the 13B is 1.) longer and 2.) mounted differently.
So you have to swap on a 12A front cover for the front mounting points. The engine still wouldn't fit because of the longer 13B engine.
this cross-member only corrects the offset between the 13B and 12A lenght, but still needs a 12A frontcover for mounting.

I will search after trigger wheel pics with a 12A front cover, thanks for the info.
i will drop a line to the guys of fullfunctionengineering if their 13B kit will fit on a 12A front cover or if they are lanning to release a kit like this for the 12A



Same thinking as me I would love a setup like this in a tastefull near-stock fb with oldschool wheels, a nice drop, nardi wooden steering wheel and some other minor upgrades... this would be a GREAT dailydriver for the summer month

 

after looking around i think a 13B GSL-SE front cover will definitly do the trick with the FFE trigger kit...
I'm wondering if the pickup points of the AC/PS bracket of the 12A and 13B front covers is the same. -> I will not use an OMP, so this is no criteria...
questions over questions

 

sry for the triple post...

here are some pic's of the sleeping lady I've found on my old webspace

 

wow, nice rotor wheels. if you ever want to get rid of them, I would love to get them.....

 

I think shipping costs from Europe to the US will be a little bit high! (Maybe you've got a buddy stationated in Rammstein or similar US airbase in Germany/Europe?)

I will definitly get rid of them in the future, I can come back to you when it's time.

 

I've got a response from FFE (full function engineering) regarding the fitment of their 13B trigger kit on the 12A front cover... for future reference: