Interesting idea..
10-11-01, 10:36 AM
#1
EX Pres of DFW Drunks
Thread Starter
Interesting idea..
Hey, I found this site today on a totally customizable Fuel injection system (low cost) DO you think this could actually be feasable?
http://www.bgsoflex.com/megasquirt.html
http://www.bgsoflex.com/megasquirt.html
10-11-01, 12:46 PM
#2
Old [Sch|F]ool
Anything's feasible. I remember a guy invovled with the DIY-EFI project made his Pontiac 6000's stock injection hardware work off of an IBM XT (YES an XT!) with a home-built injector/ignition driver board and the program was written in BASIC.
One of my favorite EFI sites is www.sdsefi.com they don't sell anything that can control our ignition systems, but their fuel-only systems will work just fine. Their extra injector controller is also interesting but the way it's tuned kinda worries me. But hell it's a TON cheaper than the alternatives.
One of my favorite EFI sites is www.sdsefi.com they don't sell anything that can control our ignition systems, but their fuel-only systems will work just fine. Their extra injector controller is also interesting but the way it's tuned kinda worries me. But hell it's a TON cheaper than the alternatives.
10-11-01, 04:32 PM
#4
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The only thing I seen was it wouldn't work the way they have it with Staged injectors, which 86+ RX-7's use.
But they said it can be adapted with more hardware to work.
The only thing that would worry me, is one of my solder joints going bad and toasting my motor, hehe
Yes, the SDS systems are pretty nice
But they said it can be adapted with more hardware to work.
The only thing that would worry me, is one of my solder joints going bad and toasting my motor, hehe
Yes, the SDS systems are pretty nice
10-11-01, 09:28 PM
#5
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Originally posted by Max7
The only thing that would worry me, is one of my solder joints going bad and toasting my motor, hehe
Yes, the SDS systems are pretty nice
The only thing that would worry me, is one of my solder joints going bad and toasting my motor, hehe
Yes, the SDS systems are pretty nice
I love soldering. Been doin it since I was 7 or so. Got pretty good at it too. (My mom, to this day still hasn't found the hole in the carpet where I dropped the iron.
)These DIY EFI setups seem interesting. Wonder why they say it can't be made to do TBI?
10-12-01, 02:02 AM
#7
8krpm is not enough
hm, so who wants to build me one? I'll convert my -SE to that just so I get to use MAP, I'll keep the Dizzy and ****, but I'd love to get this **** setup. And it seems I can upgrade the MAP chip to support turbo'd apps if I do choose to go that route later on in the car's life...
This seems like an intresting setup... tho I still am waiting to see the Wolf 4d.
--matt
I'll convert my -SE to that just so I get to use MAP, I'll keep the Dizzy and ****, but I'd love to get this **** setup. And it seems I can upgrade the MAP chip to support turbo'd apps if I do choose to go that route later on in the car's life...This seems like an intresting setup... tho I still am waiting to see the Wolf 4d.
--matt
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10-12-01, 06:46 PM
#8
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TBI would be ideal in converting a carbbed car to FI, wouldn't it?
No worrying about how far up the manifold to drill bungs for the injectors. Don't need to find/make a fuel rail.
Just pull the carb off, put on a throttle body and mount injectors above it pointing down.
I think, or am I way out there? That's how I've seen most TBI cars. (IE. 1986 Mercury Cougar 3.8 V6, 198x (It was 6-9) Chevy Camaro RS 5.0 V8) Everyone looks and on first impression says It's a carburetor cause it's got a round lid on top of the engine. I tell em to pop the lid off the air cleaner and then tell em to explain the injectors sitting there.
It seems pretty simple. TPS, O2 sensor, MAP, and IAT sensors input into the computer that controls the injectors. Well, it seems simpler than a bazillion vacuum lines, valves, needle float doodads, and venturis. To me at least.. Unless I'm missing something.
Simpler than Port injection where you need a crank angle sensor or tap off the ignition system to tell when each cylinder or rotor is on intake cycle. Then further complicate things with a MAF sensor.
The more I read what I just spewed.. the more I think I'm way off.
No worrying about how far up the manifold to drill bungs for the injectors. Don't need to find/make a fuel rail.
Just pull the carb off, put on a throttle body and mount injectors above it pointing down.
I think, or am I way out there? That's how I've seen most TBI cars. (IE. 1986 Mercury Cougar 3.8 V6, 198x (It was 6-9) Chevy Camaro RS 5.0 V8) Everyone looks and on first impression says It's a carburetor cause it's got a round lid on top of the engine. I tell em to pop the lid off the air cleaner and then tell em to explain the injectors sitting there.
It seems pretty simple. TPS, O2 sensor, MAP, and IAT sensors input into the computer that controls the injectors. Well, it seems simpler than a bazillion vacuum lines, valves, needle float doodads, and venturis. To me at least.. Unless I'm missing something.
Simpler than Port injection where you need a crank angle sensor or tap off the ignition system to tell when each cylinder or rotor is on intake cycle. Then further complicate things with a MAF sensor.
The more I read what I just spewed.. the more I think I'm way off.
10-12-01, 10:03 PM
#9
8krpm is not enough
You've almost got it. TBI is alot like port injection except the injectors are located on a single throttle body, instead of on each cyl. / rotor like MPI. For you guys you could just get a Webber 48DOCE (or whatever) throttle body, mount a pair of GSL-SE injectors on it, make a fuel rail, and off you go.
--matt
--matt
10-12-01, 10:52 PM
#10
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Why would you need a fuel rail on TBI? Just run the fuel line straight to the back of the injector. I think that's how it is on the Cougar... Have to take a look at it sometime.
BTW, What can one do with a 1986 Mercury Cougar with a bad automatic?
BTW, What can one do with a 1986 Mercury Cougar with a bad automatic?
10-15-01, 05:47 AM
#14
8krpm is not enough
that is extremely cool.
I'm looking into parts for this thing. I can prolly build it for ~$150 - $200. I need to e-mail the guys and see if I can get a few more specs about the pcb and see if I can get it made since I can't etch a board with traces that small.
Anyway, it looks like it might be a pretty cool system. I can't wait to play with this thing :p
--matt
I'm looking into parts for this thing. I can prolly build it for ~$150 - $200. I need to e-mail the guys and see if I can get a few more specs about the pcb and see if I can get it made since I can't etch a board with traces that small.
Anyway, it looks like it might be a pretty cool system. I can't wait to play with this thing :p
--matt
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