Cheap, simple, non-factory FI solution, parts, etc..., Type IV - This oughta be fun... |
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Cheap, simple, non-factory FI solution, parts, etc..., Type IV - This oughta be fun... |
Gint |
Jun 4 2009, 04:39 PM
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#1
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Mike Ginter Group: Admin Posts: 16,082 Joined: 26-December 02 From: Denver CO. Member No.: 20 Region Association: Rocky Mountains |
I've thought about doing a Megasquirt for a while now to replace my carbs. I have a Mallory that works great, so to keep the initial cost down as well as keep it simple, I want to do fuel only, but have an upgrade path available for ignition later. Ideally if this could be done for under $500 that would be fantastic.
So... What is the easiest, cheapest, most simple solution for induction parts? Throttle bodies, injectors, TPS, etc...? Which MS unit has the flexibility to do fuel now and ignotion later without starting all over again with a different ECU? Engine is a 2056 that is built on a 1.8 case and heads with a 2.0 crank, rods and P/Cs. Currently running dual Weber 40 IDFs. (IMG:style_emoticons/default/idea.gif) (my own note: 40 IDF 70 9A, Italy) |
Gint |
Jun 8 2009, 06:58 PM
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#2
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Mike Ginter Group: Admin Posts: 16,082 Joined: 26-December 02 From: Denver CO. Member No.: 20 Region Association: Rocky Mountains |
The system I have been posting about uses MicroSquirt. I LOVE it. The motor it's on runs, but still needs a few tweaks. How's that coming anyway? Thanks for tossing that link back out. I hadn't seen it in a while and I just read all of it again. Dumb Q-time... gotta start somewhere. Is MAP different than MP? Or to put what's in my head another way, is there some difference between modern MAP sensor and a D-Jet MPS? If so, what is it. Briefly... |
r_towle |
Jun 8 2009, 07:14 PM
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#3
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Custom Member Group: Members Posts: 24,585 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
The system I have been posting about uses MicroSquirt. I LOVE it. The motor it's on runs, but still needs a few tweaks. How's that coming anyway? Thanks for tossing that link back out. I hadn't seen it in a while and I just read all of it again. Dumb Q-time... gotta start somewhere. Is MAP different than MP? Or to put what's in my head another way, is there some difference between modern MAP sensor and a D-Jet MPS? If so, what is it. Briefly... Yes at a high level its the same thing. MAP is manifold air pressure. MP is manifold pressure MPS is a manifold pressure sensor that is measuring manifold air pressure. Overall, there are two things you need to measure. Air and fuel. There are two known ways to measure air in FI systems...thus two schools of thought. One is air flow (Ljet Air flow meter) or a modern Mass Air Flow Sensor. The other Manifold pressure. Djet is just one of these systems. Ford uses manifold pressure and drag racers swear by it, versus air flow, for obvious reasons...they would blow a mass air flow sensor apart. Modern systems use a solid state manifold pressure sensor that looks like a cigarette lighter...its small. I have had quite a few discussions that never got off the ground about mapping the 914 MPS input and output, basically reverse engineer it...and then get a modern solid state pressure sensor built for us...and it would fit inside the MPS housing to retain the looks of the car....but again...never went anywhere with it...to much work, not enough market. You should be looking at Ford escorts and other 4 cylinder 2.0 liter manifold pressure FI systems that are tuneable....The tuning bit is important. For the money you are looking to spend...do research on all the online tuner forums and find a system that is well understood...then get a small system from a junkyard... The feedback for any fuel system is engine temp, and O2 sensors. Engine temp is to ensure the motor is hot enough, but not to hot. Our motors temps are alot different than a water cooled car...so that is where some tuning needs to happen. The input range needs to be changed... O2 sensors. Because a watercooled car can run hotter without failing...they burn cleaner. Again, you need to be able to tune that input range. Rich |
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