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The family Commando build project

DaveB

DaveB

Long Jeep Fan
Location
Holladay, Utah
It made it to Moab (see trip reports) and it performed very well. It drives down the road very well and off-road it went up everything we tried. I do have some issues that need to be solved. The first one showed up on the way down, freeway and highway driving causes more exhaust heat than going around town so don't forget your heat shielding. I ended up with smoke inside the jeep because the muffler melted my rear floor mat. The heat also caused the plastic speed sensor post to break a couple of times so I will be re-locating the sensor and shielding the exhaust better. We made a temporary shield from some soffit and sheet metal I found along the road which helped quite a bit. After adding a tire carrier, sub woofer, and skid plates I am sagging in the rear so I need some longer rear springs. The biggest issue that I need to work on is the TBI fuel injection. Its performance is anemic and the gas mileage sucked. It should do better than 10 MPG. My 502 with a carb does that and at least it has power while eating that much gas. I will have to figure out why it isn't doing what I expected on power or mileage. Any TBI experts out there ?
 
DaveB

DaveB

Long Jeep Fan
Location
Holladay, Utah
The Commando made it out to the Teraflex AllJeep show. It walked the course very well, scored 831 on the ramp and took home a first place trophy for classic jeeps. Here are a couple of photos from Teraflex's facebook page, hopefully they don't mind me sharing them. I have been able to improve the TBI performance quite a bit which I hope will improve the gas mileage. It does seem to run a tad warm now that the hot weather has hit so I may need to look into an aluminum radiator. It has a shroud on it now and some of the issue may be the stock location of the temp sensor since it sits between plugs 1 and 3 just below the exhaust manifolds. After the Relic Run I will start on the body work and paint.jeeps.jpgflexramp.jpg
 
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Deweyxj

Deweyxj

Invisible, on purpose!
Location
In my own private Idaho
DaveB said:
The tube on the flares is one inch, the main fender tube is 1.5 inch, and the sheet metal is 12 and 10 gauge, a bit of overkill but its what was in the scrap section at SSS steel that was the correct size.
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Wow! those things are heavy duty!:eek: You wont have to worry about someone standing on them & they'll prolly take a real beating!:D

What did you figure out on the TBI performance problems?? :-\ I'm planning to convert my AMC 360 to a GM TBI. Is there anything I should be aware of or on the look out for?;)
 
DaveB

DaveB

Long Jeep Fan
Location
Holladay, Utah
Deweyxj said:
Wow! those things are heavy duty!:eek: You wont have to worry about someone standing on them & they'll prolly take a real beating!:D

What did you figure out on the TBI performance problems?? :-\ I'm planning to convert my AMC 360 to a GM TBI. Is there anything I should be aware of or on the look out for?;)
Click to expand...


Yeah I probably over did it a bit but they work well, and yes you can stand on them. On the TBI I found a vacuum leak, rebuilt the TBI, ground down some flanges that lower the airflow, put on a better flowing air cleaner stand off, chipped it, replaced the stock intake manifold with an Edelbrock Performer manifold and Holley TBI adapter, and put on better flowing exhaust manifolds and Y pipe.
 
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