Yea...I finally made it to the Dealer in Brookings a few weeks ago. Not only did they not have my T-stat, nobody had asked for one for 2 years....Then online you get gouged for more than the price just for shipping.

No doubt running rich delays warm up, and going down hill is no help there. I have a 195* that tests right on with a digital probe. Not sure WHEN I get to 195* though. Anyway I bought the correct flow rate injectors, no going back now. Maybe I eat crow! or not. Anyway at $36 shippped selling my 8-703's might "ease the pain"

I'll post honest results. I don't expect much, but it REALLY seems to suck on short trips, which is allot of what I do. Just going from 12 to 14 would be about a 20% improvement.

 

Your mileage on short trips is to be expected. You have a 195 stat in there that only gets to 165? Bad stat. Your Jeep, even in default mode, will not run rich enough to affect your warmup time.

 

No look again, it's a 195*, coolant coming in the bottle tests right with a digital probe.

When my 02 sensor was stone, cold dead, she really had an issue warming up. It made a huge difference with the heat/defrost when I took care of that. I'm sure you remember following that thread. Changing the 02 sensor made a huge difference in the warmup time.

After going trough that I'm very wary of all that evaporating gas sucking heat out of the system. I use the same mechanism in my absorption frig to freeze my freezer. I don't think I need that much fuel evaporating in my cold engine. Guess we will see!

http://en.wikipedia.org/wiki/Absorption_refrigerator



"Both absorption and compressor refrigerators use a refrigerant with a very low boiling point (less than 0 °F/−18 °C). In both types, when this refrigerant evaporates (boils), it takes some heat away with it, providing the cooling effect."

Pardon me Pete. I guess is was some posts back I mentioned it runs at 195* The reference to 160* was a suggested crossover to closed loop.

 

I think the warming up and the O2 sensor deal is a coincidence. If default was that rich, these things would never have passed the EPA test.

How come I can park my Jeeps in the driveway Idling and they come up to 195? How come I can start them up and drive 2 miles under pretty much no-load and be up to 195? How come I couldn't do that with 3 different Stant Superstats?

I know how refrigerant works. I work with propane. But our coolant boils at 212 not -44F.

 

I'm talking about gasoline, not water.

No, no coincidence. Long time, no real heat until hitting the hill after the flat at the bottom. FIRST DAY after the new 02 sensor, heat before getting to the bottom of the hill. That would be a very odd coincidence.

Yea, I did go to the dealer for an OEM stat. No luck there.

 

83501426AC Retail is $23.35

 

I messaged programbo again about 703 vs ford 19# and he says that the 703 are still the better choice for my '87 not just because I wouldnt have to change the FPR and fuel rail but because they are a closer match to the flow rate of the original injectors. I'll be getting a set of 703 soon.

 

"Ain't buying it." Ha! I like stubborn! My defroster disagrees with your logic.

Great! 83501426AC for $24 is where? (and thanks)

 

They will work well! I'm hanging onto mine until I see what the 280-155-746 works out like. Yea don't know if I would want to count on the rail holding 700's without the clip....I'm not packing any marshmallows!

The Renix uses 18.6 lBs/Hr. If the 703's flow 23 lbs/hr, they might be better suited for the HO.

 

If you get tired of those 703's let me know

 

Oh, it isn't that you were running too rich, it's that you were not running lean enough, lol.

 

Yea, howdy. I don't know. I guess I'll see eventually. I'm not sure my decelerating RPM's giong down cold are high enough to shut down the injectors. 2,600 RPM? So no work + fuel for the first 8 minutes, (flowing extra/breathing air/no throttle)(of a 20 minute trip). It's pretty warm at 15 minutes....then in 5 minutes more I'm in town.

10-4 Rooster....remind me, surely I'll be jabbering about it after the new are in!

 

I looked at my injectors today and they have a Lucas part number of D3800BA and they have a light blue band around the tops (number fits Lucas part number format "D3***BA"). I couldn't find anything online about them so I'm guessing that these are the original injectors?

 

I'm no real help. I got 66 hits googleing the #, I'm sure you could look more there > https://www.google.com/search?hl=en&...pe=&as_rights=

Mine I removed have the same #, but I'm sure they were replaced, not the actual originals.

 

[QUOTE=cruiser54;2308968]I think the warming up and the O2 sensor deal is a coincidence. If default was that rich, these things would never have passed the EPA test. /QUOTE]

Good point. Maybe that is what the hot air intake business is about. Idk, but point taken. Maybe they don't test it decelerating cold is my problem. We will see! If I see a 1-1/2 MPG improvement in my "knocken around" mileage I'll call that "statistically significant", and a win.

I have consecutive data on my last 35 fill-ups (or so). The seller showed 6 (746's) and used plural "injectors". He is not going to be to happy if he just ships one. He is in Oakland, where I spent some of my early years.