rumblefish's Duster project
Heres a little tuning helper. I have had this Edelbrock air/fuel gizmo for a while now. I used it on my Cuda. It really helps. I know theres better, more advanced on the market, but at the time, there was only 2 others to chose from that had a reasonable price tag.
You have to do some drilling and welding. Don't be afraid if you have never done it before. Just grab a freind for help. No freinds around, just grab the mig, read the instructions and go to town on some scrap meatl and figure it out.
I practiced on this exhaust cuplink (2-1/2 inch) first. Not knowing how to set the mig up ot the gauge of the pipe or the thickness of the bung thats being welded in, I played around.
The bung required a 7/8 hole. A simple hole saw for the 3/8 drill did the job. A tie wrap held it inplace for me. I didn't have vise grips that large.
For those who have not used a mig welder, it's not hard to operate. The main thing is getting the weld hot enuff to melt into the pipe and bung well. Basicly, think of it as glueing. The glue is hot enuff to melt into the metal. And this is a must. To achieve this, theres a dial on the welder to increase the heat. To much and you'll just burn right through the metal.
Practice before you do the real deal. After a few trys, I got it.
To hook up the Edelbrock o2 unit;
1 wire is a positive RED wire. Hook it up to a wire that is live when the ignition is on, dead when the key is out.
1 Ground wire. Instructions say hook it to the engine block. I attached it to the back of the drivers head.
The other wires go to the 02 sensor. I just velcroed the unit (Edelbrock also surplied the velcro) to under the A/C unit. Easy to see.
3rd picture........Who says rotted floor boards can be a bennifit? Ha ha ha. It made this part easy. Same steps as in the practice welding.
Last shot.....OK, My welds look like Fido A$$, but it isn't easy on your back with limited ground clearance.
If your wondering if it is all good when you do it, take a small pen light/Mag Lite and turn it on and shine it into the bung. If you see light, you missed a spot and you'll need to go back with the mig and close it up.
Recheck when the car is on. Feel for a hot puff of air and/or a black spot from leaking exhaust gas.
Edelbrock o2 kit was about $100 bucks. It's a few years old. Not really counted in the total tally due to it being a on the shelf extra part with multi car useage. But it is something a rookie tuner can use to there bennift and IMO, worthy to add into this thread and worth the cost for carb tuning. Exper. or not in tuning a carb.
Drill bit/hole saw was about $10
Bung was $7 or 8 bucks. Jegs has'em. (Though Edelbrock does surply one in the kit.)
Once I get the carb tuned or right close in the ball park, (Weather changes and so does the state of tune, but ball park term is realitive.) The o2 sensor comes out and the plug for the bung goes in.
A device like this can help get the part throttle and W.O.T closer to what is best. When I was running my 750 AFB on the 360 Cuda, it never had a problem. Ran well, screamed up top, no hiccups, burps, sputters etc...
When the o2 was installed, it was a tad rich at idle, fine at cruise, a little lean at part throttle and stupid lean at W.O.T.
A day palying around and it made a big difference.
Heres a little tuning helper. I have had this Edelbrock air/fuel gizmo for a while now. I used it on my Cuda. It really helps. I know theres better, more advanced on the market, but at the time, there was only 2 others to chose from that had a reasonable price tag.
You have to do some drilling and welding. Don't be afraid if you have never done it before. Just grab a freind for help. No freinds around, just grab the mig, read the instructions and go to town on some scrap meatl and figure it out.
I practiced on this exhaust cuplink (2-1/2 inch) first. Not knowing how to set the mig up ot the gauge of the pipe or the thickness of the bung thats being welded in, I played around.
The bung required a 7/8 hole. A simple hole saw for the 3/8 drill did the job. A tie wrap held it inplace for me. I didn't have vise grips that large.
For those who have not used a mig welder, it's not hard to operate. The main thing is getting the weld hot enuff to melt into the pipe and bung well. Basicly, think of it as glueing. The glue is hot enuff to melt into the metal. And this is a must. To achieve this, theres a dial on the welder to increase the heat. To much and you'll just burn right through the metal.
Practice before you do the real deal. After a few trys, I got it.
To hook up the Edelbrock o2 unit;
1 wire is a positive RED wire. Hook it up to a wire that is live when the ignition is on, dead when the key is out.
1 Ground wire. Instructions say hook it to the engine block. I attached it to the back of the drivers head.
The other wires go to the 02 sensor. I just velcroed the unit (Edelbrock also surplied the velcro) to under the A/C unit. Easy to see.
3rd picture........Who says rotted floor boards can be a bennifit? Ha ha ha. It made this part easy. Same steps as in the practice welding.
Last shot.....OK, My welds look like Fido A$$, but it isn't easy on your back with limited ground clearance.
If your wondering if it is all good when you do it, take a small pen light/Mag Lite and turn it on and shine it into the bung. If you see light, you missed a spot and you'll need to go back with the mig and close it up.
Recheck when the car is on. Feel for a hot puff of air and/or a black spot from leaking exhaust gas.
Edelbrock o2 kit was about $100 bucks. It's a few years old. Not really counted in the total tally due to it being a on the shelf extra part with multi car useage. But it is something a rookie tuner can use to there bennift and IMO, worthy to add into this thread and worth the cost for carb tuning. Exper. or not in tuning a carb.
Drill bit/hole saw was about $10
Bung was $7 or 8 bucks. Jegs has'em. (Though Edelbrock does surply one in the kit.)
Once I get the carb tuned or right close in the ball park, (Weather changes and so does the state of tune, but ball park term is realitive.) The o2 sensor comes out and the plug for the bung goes in.
A device like this can help get the part throttle and W.O.T closer to what is best. When I was running my 750 AFB on the 360 Cuda, it never had a problem. Ran well, screamed up top, no hiccups, burps, sputters etc...
When the o2 was installed, it was a tad rich at idle, fine at cruise, a little lean at part throttle and stupid lean at W.O.T.
A day palying around and it made a big difference.