Tommy keep tbi. Buy a cable for it and learn how to tune it yourself.
Printable View
Tommy keep tbi. Buy a cable for it and learn how to tune it yourself.
you should probably do a compression check before spending any more money
it seemed like it was running pretty good last time I saw it. Something happened to stop that, it doesn't seem to me like you have identified or even narrowed down what the cause was.
If you need a cable this one is probably the best. http://www.aldlcable.com/
It's something in the ignition. Most likely the icm
So get one at work and see if it changes anything.
And its dual fuel. Carb for power on the street, propane for offroad.
who put that retarded idea in your head?
there are several tbi rigs in the club that have had it a long time with few problems. fred, jimmy, me, etc.
maybe its not the tbi sucking, maybe it's your motor. did you use new ignition parts or were you a cheap ******?
Everything was new last year. From Napa.
So you are putting propane on to fix a suspected icm/ignition problem?
If everything was new, warranty it out at napa.
Propane does great offroad, and it is much easier to adapt to your rig than trying to constantly combat tbi problems. You also get the advantage of running gas when you want to, so I think good idea :gigem:
Yes, tbi ignition.Quote:
Originally Posted by Seth
When converting to tbi, you get what you pay for.
What? I assume the setup is Ford Duraspark in the distributor and that wired to a GM ICM and either a GM 4 wire square coil, or a Ford TFI coil. None of those components are cheap, or ****ty, so what exactly is the "get what you pay for" component?Quote:
Originally Posted by TdmayfieldIV
Do you have any idea what you are talking about?! I thought propane was a great idea once because I read it on the interweb, then I graduated high school. Propane is a whole other animal. No motor will ever run right on both due to octane ratings. This is a terrible idea and always will be, don't waste your money Tommy, if your are having tbi issues learn to diagnos the problem instead of being a little baby about it. You bronco ran great, got decent mileage and didn't smell like ass when you first did the swap. Stop pointing fingers and fix your ****, things go wrong it is part of life. Chance are it is something you messed with that you had no idea about or a part that cost the same as a case of beer.Quote:
Originally Posted by Hot Pocket
Maybe someone that thinks tommy should stick with Tbi could come over to dowling and help? I'm not very interested in Tbi or propane but do know that since coming to dowling the bronco has never ran "good" and back in its old carbed days it did out run my dodge (factory tune).
If Tommy buys that cable Flem posted i'd be willing to help figure it out.
Like you were willing to work on your truck? :flipoff2::flipoff2:Quote:
Originally Posted by Sparling
Ditching 30 year old technology for 50 year old technology. Winning.
you are exhibiting the exact reasoning that a mouth breather does when he pulls FI off a injected motor and puts a carb on it because he can't figure out that dang ol electrical stuff. propane is for people that can't/don't want to figure out how to make FI run good, so they build a motor to run propane. ryan is right. your **** probably isn't going to run propane well because of c/r.
Quote:
Originally Posted by sasquatch
Now I'm starting to get interested. Why would his compression ratio be off to run propane? Generally propane is rate around 105 octane (quick google search confirmed) and his bronco has a 10.5:1 c/r. Seems like that could fit in real well with a dual fuel set up as you could tune for say premium gas and when switching to propane you won't have to worry about premature combustion. Granted there may be some power loss but I would figure the majority of the time will be ran with gas anyways. Also wouldn't one solutions to gain back some loss power would be to just advance the timing?
One thing i would worry about is a higher combustion temperature, but is there a common problem with burning valves/ melting pistons?
Also, not that it applies, isn't there a tax credit for switching to alternative fuels?
Where did yor get the idea his motor is 10.5:1?! 12:1 is more like it for propane and it takes twice as much to make the power of gas. The point is he has no clue how to fix a simple fi problem how is he going to figure out something he has mo experience with? Do what you want Tommy.
I did work on my truck. A lot. I also worked on your shenanigans too. Sorry I don't make tons of money at my cool future job to pay for all the cool stuff I want on my truck. :flipoff2: :flipoff2:Quote:
Originally Posted by BroncoJo
well this turned into a bitch fest fast :flipoff2: everybody is too damned thin skinned around here
You are all retarded, the best thing would be to get a crew cab body and put it on the Bronco.
How do you figure it takes twice as much propane to make the power of gas? Seems most reasonable estimates of power-loss for a gasoline tuned engine running on propane is 10-15 percent. The energy density of propane is only about 6% less than that of gasoline.Quote:
Originally Posted by RCcola55
The more I look into propane the more I'm liking it, especially if it can simplify that mess of a TBI system. I think it is only two extra wires for the heater?
Edit- Tommy said his c/r was 10.5:1 and my old 400 was too so it seemed reasonable to believe
Those axles are out of my bronco
Remember when you had a nice bronco? Then it was bad ass, then somehow it disappeared.
If I did tbi again to anything I would not use the ignition part of it. I believe this is what Howel does. Just too much guessing to get the ignition right, I think it'd be better to stay with stock unless you want to spend the time trying different chips until it works right. We're looking to upgrade the fuel system anyway, not the ignition system. Of course if you had ****ty ignition it'd be different but the duraspark that ford, jeep, and IH use is good, or on a chevy you probably have HEI. The fuel part of tbi will sort of self tune with the oxygen sensor, and if you need any more tuning just use an adjustable fuel pressure regulator.
What I see as the biggest issue here is that propane is not fool proof either. In addition, it stinks, and the fuel takes a little more planning. That said, Ed and the Vincent/Spears scout both run pane and seem to be fine.
That's interesting. I see the ignition part of it as one of the best upgrades of going with tbi. On IH motors, it was either points, or the craptastic "gold box" holley ignition. Both systems sucked, and used a traditional coil as well as vacuum/mechanical advance to control the timing. While they did work, they didn't control the timing near as accurately, or as consistently as the computer does now. Granted, this wasn't an instant process, but the time put into the 4 or 5 chips we burned for it was worth it. I haven't touched the distributor since 2002 other than to change the cap and rotor. When it was the factory ignition, it seemed like I was having to adjust timing or change points a couple times a year. The consistency of electronic timing with no mechanical or vacuum advance is worth the effort.Quote:
Originally Posted by eight
Kopecki, have you ever been around a Howell Kit? The ones I have experience with were always the kits for 258's. They never seemed to run that great. Sure, they idled good, but they just weren't that responsive, and it seemed like we were always screwing with the timing and fuel pressure on them in an attempt to get them to run better. Also, quite a few times we had to get howell to burn new chips with different fuel tables for the 258's and 360s, but that may be more of a problem with the way howell sets up their chips than anything else.
My happytime isn't running right, I think I am going to take the carb off and just poor gas into it. This should be easier right?
Stick with the times! Propane is the answer!Quote:
Originally Posted by RCcola55
Attachment 18959
That is just ingorant. Prior to the carb, the technology was a "mixer" of course you will have to install some wieghts on the fly wheel to start and stop the spark. Here is an example on an international....Attachment 18960Quote:
Originally Posted by RCcola55
I thought scouts had duraspark, guess not. Good upgrade there then. TBI does have the ability to control ignition better than the vacuum/mechanical. You must also have the ability to burn, test, burn 4-5 chips to utilize it.
I want to say that there were a couple of years (78-80?) that did not have the gold box. Not sure what they did run though.
My traveler had that. It was a hall effect sensor instead of a mag pickup. I think the ICM was built in, but I don't remember.
You're right Seth and Flem. There was a bastard hall effect system on some 78-80's. Jimmy's truck originally had this and I remember one time it died and it was like a $200 module that melted. Luckily he had a buddy who worked at Napa that helped him out on that.
Man, you get the three of us in one room and things could get unstable!
Isn't it always like that when we get together in the same place? :D
So since you're hocking the dual fuel setup are you keeping the TBI or going back to a straight carb?