1990 2.3L DIS without efi

[Rulebreaker]

Thanks for the part #, and I'll post up pic's of the manifold after i pick it up Sat. RB

 

[Rulebreaker]

I,d like to see a pic of that propane intake

Looks like I'll be finding an older head and if I have to do that I'll probably bump the compression ratio up to 11:1 or so.

 

[Snoranger]

Looks like a CA-55 carb, a VFF-30 lock-off, and either a Cobra or Type-J (Nolff's knockoff) regulator. If you need to replace or rebuild any of them, use genuine Impco parts.

If you have any questions, ask away. I fix this stuff for a living.

 

[Rulebreaker]

Looks like a CA-55 carb, a VFF-30 lock-off, and either a Cobra or Type-J (Nolff's knockoff) regulator. If you need to replace or rebuild any of them, use genuine Impco parts.

If you have any questions, ask away. I fix this stuff for a living.

Good to know! I just put my first propane setup on my 75 Bronco. I havent started it yet, but I have a question. I went to every propane provider in my town and not a one of them had a hose for between the regulator and mixer. So I used a heater hose. Is that going to work or will it give me trouble. RB

 

[Snoranger]

It may hold up for a while. That hose isn't under pressure, it's vacuum. The rubber will soften from the fuel and it will start to collapse over time.

What you want is a fuel vapor hose. They have a metal "spring" molded in the hose to keep that from happening.

 

[scotts90ranger]

I work with that stuff too, I'm not too sure on the power that 55 will support, the only engine we use one of those on is a 1.6L that only runs to 3000rpm, I'd look into running a CA100 at least, a 125 would flow a little more air with a similar footprint, I'd have to look up how much that NJ vaporizer will support also (I have a book, I'll try to look it up tomorrow). At work we run up to a 4.3L to 3000rpm with the CA100 mixer, so it should be usable size.

Snoranger is right, that hose on propane is under vacuum, but only a very slight amount (I think it's only up to 4" of water column if I remember right). To find that hose, try a forklift shop, they probably have a spool and would sell you some, if you can't get ahold of any, send me an email and I'll see what I can do...

 

[Snoranger]

I work with that stuff too, I'm not too sure on the power that 55 will support, the only engine we use one of those on is a 1.6L that only runs to 3000rpm, I'd look into running a CA100 at least, a 125 would flow a little more air with a similar footprint, I'd have to look up how much that NJ vaporizer will support also (I have a book, I'll try to look it up tomorrow). At work we run up to a 4.3L to 3000rpm with the CA100 mixer, so it should be usable size.

Snoranger is right, that hose on propane is under vacuum, but only a very slight amount (I think it's only up to 4" of water column if I remember right). To find that hose, try a forklift shop, they probably have a spool and would sell you some, if you can't get ahold of any, send me an email and I'll see what I can do...

We have a few 4g64s running the CA55, it should be fine.

He needs 1" vapor hose, see what you have. IIRC, we only stock up to 3/4".

 

[scotts90ranger]

We have 1" at work... we're not a forklift shop, I actually tune the engines as we build them to sell to some forklift/crane/tug/irrigation/etc companies (sno, you might have worked on an engine from us, KEM Equipment, would be really wierd if you've talked to me on the phone...). I'm working with a 10.3L engine on NG right now...

 

[Jfive]

I have a 91 DIS computer, and maf, DIS module, and a wiring harness allready detaped. Bought it with an engine and trans from a guy doing a jeep swap, and I really only needed the engine and trans. I'd let it go fairly cheap if your interested. Looks like he cut a few sensors that where not needed, but its in good shape. No heat cracks in the insulation.

 

[Rulebreaker]

My only concern at this point is can i advance the timing with DIS to run the propane efficiently? From what I understand you need to advance it 12*. Anyone here know the answer to this?

 

[Snoranger]

An adjustable crankshaft position sensor mount would work. You could basically trick the computer.