For the application under discussion here? You betchya!
If they're toast, they can be fixed.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Here's a puzzler for you:

I was out in my garage and I found a Holley 1945 that I had tucked away on the back of a shelf (I really do have too much crap in my garage). It came off of a 1980 slant so it has the throttle stop sensor and a solenoid on the fuel bowl purge port, but no computerized feedback mixture circuit.

Would it be possible to swap this carb for the 6145 on the van and replace the spark control computer with HEI? Another way of phrasing this question would be can the feedback carburetor operate inmdependent of the sparl control computer or does the spark control computer provide a signal necessary for the proper operation of the feedback carb? I'm thinking of trying to dump the spark control but keep the feedback carb, if possible.

Nope, the O2 sensor can't talk directly to the carburetor. The computer is necessary to look at the O2 sensor and translate what it sees into "instructions" for the duty cycle solenoid in the carb.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Okay, thanks. I guess it is just time to go get my hands dirty then.

Getting closer. I replaced the O2 sensor and it ran better. I then replaced the spark plug with a set of NGK V-power plug I bought years ago and that have been sitting on a shelf. Runs even better. I then swapped the throttle plate assembly from the 6145 and the 1945. Runs better still.

Problems: idles rough, definitley has at least one sticky lifter or loose rocker, sometimes if I floor it from idle the engine will just die if I let off the gas, and has some massive exhaust leaks from a mis-sealed replacement exhaust manifold.

Getting closer. Next up is fixing the exhaust leaks and then its of to the IM station.

On the bright side, the EGR system is functioning properly and I think the computer is working okay. I still need to take it for a test drive but I thikn if I can get the stuck lifters working again the engine will actually run pretty good.

Wheee! It sure is fun to be working on a slant again.

I know the feeling! Even up here in the rusty, subfrozen Great White North (it's snowing and bitterly cold outside as I type this), there are a couple slants in my neighbourhood. There's a super clean '74 Valiant across the street, guy is a retired maths teacher, the son of the original owner. I bypassed his OSAC valve last year for him. And about 2 blocks away lives a '60 Valiant V100 with something like 19,000 original miles on it. Plastic seat covers still on it. Three out of four headlamps and tires original. It's being used as an everyday driver (eek!) by an odd-jobs man; I fear it won't last long in this climate. If I had more spare time on my hands, I'd offer to tune it up for him and go through and fix little stuff, just to get in some slant-6 time!

Good job on your van, sounds like you're getting closer to the target.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Well, here are the results:

Intake manifold gasket came off in three pieces, it was totally shot. Gasket between the exhaust manifold and the pipe was toast (literally) too.

Air/fuel charge temp sensor on #6 runner was finger loose (vacuum leak)

One of the manifold mounting nuts was loose

One of the manifold moutning studs was stripped

Vacuum tee had an arm broken off of it (vacuum leak)


So I replaced the intake manifold gasket, stripped stud, and vacuum tee and it runs much better now. No more noisy exhaust leak.

The problem is that it still runs rough, lacks power, and revs really high before shifting. I still need to adjust the kickdown linkage and I am hoping that will cure the high revving problem.

I also am fairly certain that the spark control computer is dead. When I start the van I the engine revs cyclically and I suspect this is the computer hunting for the right timing setting. The engine also diesels when it is shut off.

So should I plunk down the $189.99 at Autozone to special order a new computer or should I yank the computer and switch to a standard electronic ignition and carb? Do I stand a chance passing emissions without a computer? Argh...

I think I would replace the computer with an electronic ignition and different carburetor. Way less expensive than a new computer, and you have alot more room for tuning since it dosn't have to be in the paramiters of the computer. Lean out the carb, run the tank down to almost empty and put some rubbing alcohol in the tank. You'll pass the emmision test. It'll be our secret.

Thats kind of how I am leaning right now. I am pretty sure I have all the parts I need, but I need to double check.

I found a place that sells remanufactured computers, so short term, if the price on the computer isn't too much, I think I will try and get the computer system working in order to pass emissions, then swap out the computer at a later date.

In case anyone else out there is cursed with a faulty lean burn or spark copntrol computer on their vehicle, here is the website I found:

http://acdelcocomputers.com/

Their list of mopar computers seems pretty extensive, and I talked to them on the phone this morning. Their computer was down so they couldn't get me a price but are calling me back tomorrow.

A place that remanufactures computers, and their computer is down...............


that doesn't sound to good.......

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

Well, I am fairly certain the scc is dead (the timing was jumping all over the place at idle), and the remanufacturer i contacted informed me that the SCC for my van is no longer available. Looks like it is tmie for the HEI swap and switching to a non-feedback carb.

The timing jumping all over could be a bad pickup in the dist or a worn timing chain.....

My truck had similar issues (timing wandered +/- 7 degrees ) which is when I finally stripped the SCC out of it, and replaced it with EI. Soon thereafter I went to MSD as I still could not cure a random idle misfire. Timing was rock solid--never touched the timing set, and the misfire vanished. (I know Dan will jump on this, but it worked for me )

-S/6

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The "Silver Bullet"
87 Ram D150

I may be able to find a used lean burn computer at a cheap price if you are still looking. Is this the model mounted on the air cleaner? Does it have 2 plugs or 1 plug.

Can you post a picture of the connectors and I can then dig though the pile for a match and try and find some part numbers. My only pitfall is that it may not be any better than the one you got. How would I test it?

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1980 Aspen 225 super six