Efi options for a 200.

[Dragonlich1961]

Looks like the best option for a crank trigger is going to be a 36-1 crank wheel( custom install). If I can't get the distributor to work, then I'll probably go with a hall effect sensor off the fuel pump lobe or look in to the cam sensor that 67straightsix used. This route would also work to allow a coil near plug configuration with an ls style coil.
A crank wheel is needed for sequential efi, with out it I'll probably have to run batch fire.
I'm hoping that I can use the distributor as that will keep my cost down.
Can some one help me make sure I have the correct size injector. Math has me at roughly a 18-20 lb/hr injector.

 

[pmuller9]

If I can't get the distributor to work, then I'll probably go with a hall effect sensor off the fuel pump lobe or look in to the cam sensor that 67straightsix used. This route would also work to allow a coil near plug configuration with an ls style coil.

The fuel pump lobe is fixed as far as timing and may not fall within the timing window to identify #1 cylinder for ignition purposes.
You can use a 4 pin HEI module with the DS2 distributor to convert to a 12 volt Hall Effect type signal to guarantee operation.
The module would need a pull up resistor between the B and C terminals since the coil driver is an open collector output.
Then you can adjust the Cam Sync Signal timing.

Can some one help me make sure I have the correct size injector. Math has me at roughly a 18-20 lb/hr injector.

(200 hp X .5 BSFC)/6 injectors/.8 duty cycle = 20 lb/hr

 

[Dragonlich1961]

The fuel pump lobe is fixed as far as timing and may not fall within the timing window to identify #1 cylinder for ignition purposes.
You can use a 4 pin HEI module with the DS2 distributor to convert to a 12 volt Hall Effect type signal to guarantee operation.
The module would need a pull up resistor between the B and C terminals since the coil driver is an open collector output.
Then you can adjust the Cam Sync Signal timing.



(200 hp X .5 BSFC)/6 injectors/.8 duty cycle = 20 lb/hr

I currently have a msd6al. Would that work? That's what I have wired up now.

 

[pmuller9]

I currently have a msd6al. Would that work? That's what I have wired up now.

Yes, it will continue to work as a stand-alone ignition system, but I was going by your post that said you wanted a coil near system.
In that case you will need the DS2 distributor modified with a single reluctor to be used as a cam sync signal so the Terminator EFI can drive 6 separate coils in the correct firing order.

 

[Dragonlich1961]

Yes, it will continue to work as a stand-alone ignition system, but I was going by your post that said you wanted a coil near system.
In that case you will need the DS2 distributor modified with a single reluctor to be used as a cam sync signal so the Terminator EFI can drive 6 separate coils in the correct firing order.

I'm looking at both. I want to do timing control now but was hoping to use the distributor, keeps the look and saves some money. My eventual plans would love to involve forced induction, so I'm kind of planning ahead.
I know it's possible to do timing control with a distributor. Vehicles did it for years in the 90's.
Sorry for any confusion. At the moment I would like to use my distributor to feed a cam sync to the efi. And fire a single coil if possible.

 

[pmuller9]

I'm looking at both. I want to do timing control now but was hoping to use the distributor, keeps the look and saves some money. My eventual plans would love to involve forced induction, so I'm kind of planning ahead.
I know it's possible to do timing control with a distributor. Vehicles did it for years in the 90's.
Sorry for any confusion. At the moment I would like to use my distributor to feed a cam sync to the efi. And fire a single coil if possible.

Using a 36-1 wheel, the crank trigger sensor will be set to the 7th tooth after (to the left of) the missing tooth when the crank is at TDC.

The Cam Sync pulse can be set to a magnetic pickup in the software so you can use the DS2 distributor with a single reluctor.
You would also need to lock out the mechanical and vacuum advance in the distributor.

The Cam Sync pulse can happen around 180 degrees BTDC but the trick is to have Both the Cam Sync pulse timing correct and have the distributor rotor phasing correct so that the rotor is pointing directly at the #1 contact on the distributor cap when the crankshaft is turned to 20 degrees BTDC.
Then the Terminator X can control the timing and trigger the MSD unit.

Does that help?

 

[Dragonlich1961]

Using a 36-1 wheel, the crank trigger sensor will be set to the 7th tooth after (to the left of) the missing tooth when the crank is at TDC.

The Cam Sync pulse can be set to a magnetic pickup in the software so you can use the DS2 distributor with a single reluctor.
You would also need to lock out the mechanical and vacuum advance in the distributor.

The Cam Sync pulse can happen around 180 degrees BTDC but the trick is to have Both the Cam Sync pulse timing correct and have the distributor rotor phasing correct so that the rotor is pointing directly at the #1 contact on the distributor cap when the crankshaft is turned to 20 degrees BTDC.
Then the Terminator X can control the timing and trigger the MSD unit.

Does that help?

That is very much helpful. Thank you. Efi to this level is new to me a bit but I want to learn as much as I can.