We are planning to sell our house to move in the same city, so it looks like my carb tuning will go on the backburner for now.
1984 Oldsmobile Cutlass Supreme Brougham
- Thread starter gdouaire
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- 4-door build thread cutlass
So the car is now at the new house, but a lot of time was spent on that house in the last few months.
Tried to start the car, no gas is going into the carb, I suspect the fuel pump is sucking air from a rusted out gas line.
Time to replace the lines, the fuel tank and the sender. Been neglecting these...
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The fun part: setting up the new stuff.
Next: the unfun part, removing the old fuel line from the car.
Next: the unfun part, removing the old fuel line from the car.
It has been a slow year. We moved in an older house which needed some attention.
I completed the fuel tank & lines replacement. That was a not-so-fun operation, but done done.
The good thing is that, for this winter, the car stays indoor.
The carb rebuild which I finished in a hurry before moving was not a good idea. I luckily found an unmolested turbo quadrajet from a 1983, this will be the new starting point. The other carb is a keeper, will just need to have it rebuilt by someone who knows what he does, e.g. not me!
The 1983 carb came with a full turbo setup which I'll keep as a backup and also an EFE setup which I think will be useful for cold starts.
I completed the fuel tank & lines replacement. That was a not-so-fun operation, but done done.
The good thing is that, for this winter, the car stays indoor.
The carb rebuild which I finished in a hurry before moving was not a good idea. I luckily found an unmolested turbo quadrajet from a 1983, this will be the new starting point. The other carb is a keeper, will just need to have it rebuilt by someone who knows what he does, e.g. not me!
The 1983 carb came with a full turbo setup which I'll keep as a backup and also an EFE setup which I think will be useful for cold starts.
Finished hooking up all the hoses, cranked the engine and it ran ok, with the carb bolted as-is. Minor coolant leak on a hose, one screw needed some tightening.
Pretty happy with the current state of things.
Now, will connect the transmission TV cable (pin to carb on its way), top the 200-4R with fluid and take the car out in the driveway for a longer break-in.
Pretty happy with the current state of things.
Now, will connect the transmission TV cable (pin to carb on its way), top the 200-4R with fluid and take the car out in the driveway for a longer break-in.
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Took the car out for some idling time in the driveway.
Well, it's all fun and games until the choke comes off.
Probably a vacuum leak somewhere, a bad pcv valve, etc.
Well, it would not be fun without some challenges, right? 😉
Well, it's all fun and games until the choke comes off.
Probably a vacuum leak somewhere, a bad pcv valve, etc.
Well, it would not be fun without some challenges, right? 😉
Well, here we go. When I first assembled the engine, I used the 1979 turbocharger. However, since then, I got a 1983 turbocharger. Will use the later one, as its internal wastegate is operated differently and apparently, its design better disipates heat.
Below image: top turbo is 1983, bottom is 1979. Notice how the swivel operating the internal wastegate are 180 degrees apart. That calls for a different actuator, 1983 is (I guess) a normal, positive action actuator powered by pressure. The 1979 one operates on vacuum to pull the wastegate lever to close it, that does not make sense to me, but ... whatever. Also, the 1983 turbo has extra ribs for heat dissipation in its housing between the turbines.
So now, the intake is pretty naked, time to junk my recycled PCV valve that is hidden below the carb plenum. Time also to re-think the wire and hose routing & clean stuff.
Below image: top turbo is 1983, bottom is 1979. Notice how the swivel operating the internal wastegate are 180 degrees apart. That calls for a different actuator, 1983 is (I guess) a normal, positive action actuator powered by pressure. The 1979 one operates on vacuum to pull the wastegate lever to close it, that does not make sense to me, but ... whatever. Also, the 1983 turbo has extra ribs for heat dissipation in its housing between the turbines.
So now, the intake is pretty naked, time to junk my recycled PCV valve that is hidden below the carb plenum. Time also to re-think the wire and hose routing & clean stuff.
Taking my time to re-assemble the carb plenum & turbo.
While reading, found out that starting in 1983, the turbo Buicks used a piezo knock sensor, different from the early units. Since I use a 1983 ECM and also a 1983 ESC module, the car needs the newer knock sensor. Ordered. The ESC module is a story in itself as they are expensive...
GM 1997463 below is the old one that came with the 1979 turbo engine I am using.
While reading, found out that starting in 1983, the turbo Buicks used a piezo knock sensor, different from the early units. Since I use a 1983 ECM and also a 1983 ESC module, the car needs the newer knock sensor. Ordered. The ESC module is a story in itself as they are expensive...
GM 1997463 below is the old one that came with the 1979 turbo engine I am using.
