5.0 CFI to SEFI Upgrade

Topic: 5.0 CFI to SEFI Upgrade (Read 27028 times) previous topic - next topic

5.0 CFI to SEFI Upgrade

Reply #45 – March 10, 2015, 01:02:22 AM

Quote from: TurboCoupe50;445802

I know you're correct on the SEFI but would not the batch fire system also require reference to #1??

I don't think so. It is just used for ignition and engine RPM. ..

Quote

If they are different would be easy enough to replace with the correct vane disc, as it's only held in place by two screws...

I can't find where it is available as a part. They call it a rotary armature with vanes and windows or some places just a rotary vane.
Don't know if the different size vane or window is obvious to the naked eye or not.
Maybe daminic has a micrometer he can check it with.

5.0 CFI to SEFI Upgrade

Reply #46 – March 10, 2015, 02:51:26 AM

If he would use a ho sd ecc with 19 injectors, couldn't he match the ho firing order to the sd order? #1 would be the same ,make the ho #3 ,#5 on the sd and so on and on with the rest of the firing order. That is if he was using an ho engine harness, or repin the sd harness to to the ho ecc.

5.0 CFI to SEFI Upgrade

Reply #47 – March 10, 2015, 07:41:20 AM

Quote from: softtouch;445829

I can't find where it is available as a part. They call it a rotary armature with vanes and windows or some places just a rotary vane.
Don't know if the different size vane or window is obvious to the naked eye or not.
Maybe daminic has a micrometer he can check it with.

He does....but he also has no clue what we are even talking about at this point...

5.0 CFI to SEFI Upgrade

Reply #48 – March 10, 2015, 10:45:50 AM

Quote from: daminc;445831

He does....but he also has no clue what we are even talking about at this point...

Well you won't need one as to my nekkid eye difference is quite obvious...

This is a SEFI dist, no idea if the CFI uses same disc/vane, like a 3.8, never owned one, never plan to...

The two screws on top hold it in place, so would be easy to swap if you found one separate or maybe a junk dist...

5.0 CFI to SEFI Upgrade

Reply #49 – March 10, 2015, 11:26:15 AM

No, you can't. The firing order switches which sides fire when, the eec would think it was rich on the wrong side with a s.o. cam.

5.0 CFI to SEFI Upgrade

Reply #50 – March 10, 2015, 02:06:43 PM

My 84 3.8 CFI had the round rotor that screwed on. The rotor mounting plate and the vane armature were riveted together and not removable from the top. They are part of the shaft, swedged on there or something.
To replace the PIP hall effect pick-up, I had to take the gear off the bottom and pull the shaft out.
You can see some of the vanes from the top. But not sure if you can see the ones under the rotor mounting plate.

Don't know if the 5.0 CFI is made that way.

5.0 CFI to SEFI Upgrade

Reply #51 – March 10, 2015, 02:09:50 PM

Quote from: Haystack;445837

No, you can't. The firing order switches which sides fire when, the eec would think it was rich on the wrong side with a s.o. cam.

Is this an answer to my post?

5.0 CFI to SEFI Upgrade

Reply #52 – March 10, 2015, 02:40:20 PM

Quote from: softtouch;445840

My 84 3.8 CFI had the round rotor that screwed on. The rotor mounting plate and the vane armature were riveted together and not removable from the top. They are part of the shaft, swedged on there or something.
To replace the PIP hall effect pick-up, I had to take the gear off the bottom and pull the shaft out.
You can see some of the vanes from the top. But not sure if you can see the ones under the rotor mounting plate.

Don't know if the 5.0 CFI is made that way.

It's still necessary to remove gear to repl PIP on 5.0 dist as the mount for vane disc is too large for a PIP to fit over it...

Apparently they are different, the Probst Ford FI manual states the narrow vane is used as a cylinder identifier in the SEFI systems that use signature PIP, so I'm assuming they are all one size in the CFI & batch fire systems...

5.0 CFI to SEFI Upgrade

Reply #53 – March 10, 2015, 03:06:19 PM

Jerry, if you're needing and older style distributor for a non roller cam, but for EFI, I think I have one from an '84 or 85 truck 302. I'd have to look, so don't hold me to that.

Or at least I think that's your angle with this, correct? Finding a dizzy with the right gear?

If that's so, perhaps you could get just a gear from someone/somewhere for the flat tappet cams, if you can't find the dist you do need...or it's not cost efficient..?

Either way, Ill go look. I've got a box of truck 302 stuff...pistons, rods, some other stuff. Hell, I've had it for 15 years...I don't know what's in there. Likey nothing but s metal by now...but I'll look through it.

Also working on getting your items boxed, I should be able to get your quote tomorrow. Wife started a new job last week, so in my off time, I'm now Mr. Mom, dinner cooker, butt wiper, and all that. Trying to keep everything fluid and flowing in the right direction. Ain't easy, but anything worth doing isn't. :)

Let me know on the distributor business..I'll see what I can dredge up. Surely I have one...

5.0 CFI to SEFI Upgrade

Reply #54 – March 10, 2015, 03:44:08 PM

I have no idea what anyone is talking about on this thread...
are we now saying that my distributer wont work for my standard SEFI upgrade?

5.0 CFI to SEFI Upgrade

Reply #55 – March 10, 2015, 04:42:04 PM

Apparently I'm lost, just as much as you are..

If you have a roller cam engine, you'll need a steel gear on your distributor. Flat tappet cams require a cast iron gear.

By roller, any port fuel injection 5.0 is what you'd need the steel geared dizzy in, to be correct and not tear something up.

Or, a roller cam engine. Depending on what year the engine in your car is, or whether or not it's a roller cam will determine what you need. I was under the assumption you wanted the newer TFI distributor, only with the iron gear for use with the NON roller cam...

As with firing order, the cam controls pretty much all other things, including in this situation, choice of distributor. Not a big deal at all, actually, just have to know what's in there.

5.0 CFI to SEFI Upgrade

Reply #56 – March 10, 2015, 05:06:00 PM

but I already have a tfi distributer on the engine now

5.0 CFI to SEFI Upgrade

Reply #57 – March 10, 2015, 05:09:54 PM

I'm very confused about this now

5.0 CFI to SEFI Upgrade

Reply #58 – March 10, 2015, 05:39:40 PM

Do you know if it's a roller engine? Have you had the intake off?

If you pull the intake, and you see the dog bones in the valley, it's a roller, and will have the proper gear on the distributor for what you need and want to do.

If you don't have the dogbones (which is actually the retainer for the roller lifters, to keep them from turning in the lifter bores and causing one HELL of a mess) then you have the flat tappet cam, and the gear on your distributor will which is not good with an HO or any other roller cam.

Sorry to confuse you here, dizzy gear mostly depends on what cam you have, or plan to use. Thankfully, all the roller cams are pretty much standardized, in regards to distributor gear type...mild steel.

See, the reason behind the different gear metals is that if your distributor seizes up, the gear will grind off rather than the cam. Still, it's almost always going to mean a complete rebuild or replacement....metal in the oil, mains, etc. But, unless one actually puts the wrong gear on the wrong cam, it usually doesn't happen.

This has nothing to do with PIP, or anything like that...

Basically, what I'm saying is...if you're don't already have the roller block, and you're going to that end, I have several of the proper distributors for a roller cam. Sorry for confusing you..

5.0 CFI to SEFI Upgrade

Reply #59 – March 10, 2015, 06:16:45 PM

I think I see where everyone is going with this.....

I am not going HO
I am not changing the cam
I am just making my engine SEFI with everything that it already has in it.

so the question is...will my distributer work adding the upper and lower intake, changing the wiring harness, and using a standard SD computer with a fuel rail and 14# injectors