12a fuel injection
#1
Banned. I got OWNED!!!
Thread Starter
Join Date: Dec 2004
Location: Colorado
Posts: 8
Likes: 0
Received 0 Likes
on
0 Posts
12a fuel injection
I have a stock 85 12a and I want to make it fuel injected. I know its possible I have seen one. Also mazda made the sa22c. An rx7 12a turbo with fuel injection. Any thoughts?
#5
FB+FC=F-ME
To get a fully complete,factory EFI 12AT in the states is a tough job.
All the stock 12AT EFI components are pretty hard to find, since we never got that engine here.
If you need a smog legal EFI 12A,then your pretty much outta luck.If you dont need to smog it,then fork over the big bucks and build/tune a custom EFI system using any number of individual throttle body systems that are out there.Most use common carburetor intake manifolds and are quite simple to install.Most of the work involved is getting the fuel delivery system setup to handle EFI pressure/feeding, and the dyno tuning of the ECU.
All the stock 12AT EFI components are pretty hard to find, since we never got that engine here.
If you need a smog legal EFI 12A,then your pretty much outta luck.If you dont need to smog it,then fork over the big bucks and build/tune a custom EFI system using any number of individual throttle body systems that are out there.Most use common carburetor intake manifolds and are quite simple to install.Most of the work involved is getting the fuel delivery system setup to handle EFI pressure/feeding, and the dyno tuning of the ECU.
Trending Topics
#8
Junior Member
Join Date: Feb 2008
Location: San Luis Obispo, CA
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Budrud, I have thought about using a chevy tbi setup also. I have a roommate with the software and equipment to burn chips for the chevy computers. The same roommate can also make me manifold adapters and flanges on a cnc machine at school. If you have any info on doing this let me know.
#9
Rotoholic Moderookie
iTrader: (4)
SA22C refers to any Rx7 produced between 1979 and 1985 because outside of North America the VIN for all those years starts with "SA22C..."
But more commonly, the SA22C (or just "SA") is used to refer to the 1979-1980 Rx7s because those two years held VINs starting with "SA22C..." in North America. After 1980 they changed the VIN to comply with changes in American laws, so all north american Rx7s from 1981-1985 are referred to as "FB"s because their VINs start with "JM1FB33..."
Check the FAQ, you'll find more info on SA, FB, FC, FD etc... there
The 12a turbo was only available in Japan. They got that and we got the GSL-SE instead. It was fuel injected, but good luck getting your hands on any parts from them. They're extremely rare especially on this side of the pond.
The most common way to fuel inject a 12a is, as mentioned by bugman, is to use the FI throttle bodies that look kind of like 2barrel weber carbs do. If you keep your eyes open they sometimes become available in the for sale section or on ebay. Since FI uses higher fuel pressure than carb and needs more flow, you'll need to change to an FI fuel pump, run new fuel hoses, and of course you'll need some sort of computer control from a standalone ECU.
The question you have to ask yourself is why are you doing this, and what is your budget? Just switching from carb to FI isn't going to give you a lot of power, and it is very hard to make an emissions-compliant standalone FI setup for a 12a if that's a necessity in your area. It will cost quite a bit and not be a simple "bolt-on" swap.
If you're just looking for increased performance, look towards aftermarket or performance carb options such as sending your Nikki to Sterling for a complete overhaul and rebuild.
Jon
#12
Zombie Response Team
Join Date: May 2007
Location: Warsaw, Indiana
Posts: 396
Likes: 0
Received 0 Likes
on
0 Posts
Theres this option but its very expensive. http://www.atkinsrotary.com/store/pr...cat=589&page=1
#13
Old [Sch|F]ool
I used to say the same thing, in the contemporary vernacular.
Since that time, I've driven some rather "built" cars with EFI.
Here's a pic of my car as of today:
Yeah... carbs? They're OK but EFI is way bitchiner.
edit: And the awesome part. When I get bored with the stock -SE engine and put something radically ported in there (maybe the P-port 12A will go another round, maybe an extreme streetport FC engine for N/A non bridge braggin' rights... I can reuse almost all of my investment. The initial cost is a little steep, but it's still on par with a *decent* aftermarket carb... and when you change setups, you don't have to buy $50 in jets.
Since that time, I've driven some rather "built" cars with EFI.
Here's a pic of my car as of today:
Yeah... carbs? They're OK but EFI is way bitchiner.
edit: And the awesome part. When I get bored with the stock -SE engine and put something radically ported in there (maybe the P-port 12A will go another round, maybe an extreme streetport FC engine for N/A non bridge braggin' rights... I can reuse almost all of my investment. The initial cost is a little steep, but it's still on par with a *decent* aftermarket carb... and when you change setups, you don't have to buy $50 in jets.
Last edited by peejay; 02-22-08 at 10:56 PM.
Thread
Thread Starter
Forum
Replies
Last Post