L-jet on a 1.7 / 1.9 Options

[Literati914]

I've been kicking around what to do with the stock 1.7L, w/single progressive carb engine that came with the car that I've been messing with lately. Car's not been started since I got it, though I did hit the starter a couple of times and it sounded promising (dirty old fuel, tank, carb and fuel lines need attention). Anyway, I don't want to keep the single progressive carb for very long and was thinking of eventually getting dual webers or repros. But I've been offered an L-jet system from a 1.8L, for a good price and had some questions.

-Will it work with the stock 1.7L distributor?

-I've heard that it might run rich on a 1.7, and this offer does not include injectors - would just going with a set of stock 1.7 injectors eliminate that tendency and be the best bet?

-Also, I've had a brand new set of 96mm P/C's for 1.7 case in storage for a few years now.. I guess I could slap those on while I have the engine out for some engine bay touch up. Like I've mentioned in another thread, I hope to not have to split the case tbh. Would you guys bother and would this change which distributor and injectors you'd go with?

[brant]

The L jet and D jet parts don't interchange. The Djet is fired from the distributor and the L jet is not. you could run a 1.7/1.9 on either induction system, but think you need all of the components for that system to match (computer, distributor, mps, or flapper box)

[Literati914]

The L jet and D jet parts don't interchange. The Djet is fired from the distributor and the L jet is not. you could run a 1.7/1.9 on either induction system, but think you need all of the components for that system to match (computer, distributor, mps, or flapper box)

Yes, I assumed the D-jet and L-jet parts would not interchange. The offer includes the flapper box, computer, harness, etc. Ok so I guess it makes since for the distributor to be specific to the L-jet system.. the why of 1.7L injectors not working with the system in a 1.7L car is confusing to me (unless the elec. connectors are different). But that kinda makes no difference at this point since injectors would have to be purchased either way (I was only thinking of using 1.7 injector because in theory the volume would be better than the L-jet's 1.8 injectors). Then again, it may become a 1.9L, so. I understand L-jet is somewhat tunable in regards to A/F anyway, correct?

Also, if I'm not mistaken L-jet has no MPS, is that right? Does it have an AAR or anything else like D-jet has?

[fiacra]

The L jet and D jet parts don't interchange. The Djet is fired from the distributor and the L jet is not. you could run a 1.7/1.9 on either induction system, but think you need all of the components for that system to match (computer, distributor, mps, or flapper box)

Yes, I assumed the D-jet and L-jet parts would not interchange. The offer includes the flapper box, computer, harness, etc. Ok so I guess it makes since for the distributor to be specific to the L-jet system.. the why of 1.7L injectors not working with the system in a 1.7L car is confusing to me (unless the elec. connectors are different). But that kinda makes no difference at this point since injectors would have to be purchased either way (I was only thinking of using 1.7 injector because in theory the volume would be better than the L-jet's 1.8 injectors). Then again, it may become a 1.9L, so. I understand L-jet is somewhat tunable in regards to A/F anyway, correct?

Also, if I'm not mistaken L-jet has no MPS, is that right? Does it have an AAR or anything else like D-jet has?

L-Jet does not have an MPS, but does have an AAR. I'm not sure that grafting a L-Jet set up on to a 1.7 is that easy to do. I think other members have done it, but I can't remember who. As much as I prefer FI to carbs you might be better off going with the dual webers or equivalent as that seems like it would be the easiest way to go. Definitely would ditch the single carb set up.

If you are interested I think I have most of the components for a 1973 1.7 D-Jet system that I bought years ago. Off the top of my head I'm missing the MPS and the distributor, but might also be missing a few other bits? I'd have to pull it out of storage to see. Since I have a 1975 1.8 I'm always interested in L-Jet parts for that car, so the L-Jet system you have access to might be of interest to me. PM me if you have any interest in the D-Jet parts and I'll get an inventory of what I have.
.

[brant]

Ljet measures flow through the flapper box
Diet measures pressure (which mathematically) equates to flow through the mps

Injectors are different connectors
And more importantly the design of each of the two systems are inherently different in the theory of how the injectors work. Do not interchange.

I have a core set of ljet injectors for sale right now if you pursue l jet

Just sold an ljet distributor
And also do have an ljet throttle body (also different) if you don’t already have it