- 1,238
- 485
- 83
- Location
- Guymon, OK
Started with a plain jane M998, thanks to @fuzzytoaster for the box and lunch, i dont know how yall deal with dfw traffic everyday, glad you drove
dropped secm on truck and she sure seemed to squat alot, more that I thought with just an empty box.
so we went shopping for a heavy, found a m1097a2 in wichita with a swamped, locked up motor. had 400 miles, still had foil tape on alot of the openings. towbar'ed it home and picked up another 200 miles. so got to start with a 'new' 20 year old truck with 600 miles on it
drained a little oil off the bottom, no water, checked tranny also, no water, pulled injectors and glowplugs and filled cylinders with a product from oreilleys called Evaporust. let it set a week filling it back full every day.
Tried rolling engine with starter, just clicked, so tried a breaker bar on the front, nothing, tried pry bar on the fly wheel and..... it moved just a hair, and another hair, one tooth at a time forward and backwards, and it finally got a full rotation,
Tried the starter again, still just click and kick the bendix out, could jump the solenoid and it would spin, what the heck, so dropped the started, burned up solenoid would cause some problems.
100 rotations later by hand, no more Evaporust in cylinders, so we fill the cylinders with 15-40 and roll over motor 20 times everyday, refilling oil to try to float any rusty rings again, and order a starter.
Primed up fuel and she ran, pretty rough, but ran, so next is the coolant system, filled with water only for testing purposes and flushing, I get this sludge looking stuff in the top radiator hose, so we pull t-stat and start a deep flush
Couple rounds of radiator flush and new t-stat, finally got a running, moving truck.
Swap over SECM box from 998 to 1097, 1097 has a S250 shelter rack in the back and the SECM is 1/2" too wide to fit, so pull rack for now cause I want to see what squat looks like on the heavy
WOW what an amazing difference in suspension, about 1" squat on heavy compared to 2-2.5" on the 998
No half doors available reasonably priced, so we engine-nerd our own, they work exactly as they should.
Bolted the box in to the truck, just didnt feel rigid for cross country travel, so we 'modified' the S250 rack by cutting the top leg of the angle iron, now its a flat surface the box can sit of and be secured on the ends with. Bolted in and wow, what a difference that 250 mount made of rigidity of the whole truck.
Tire is off ground and box has no twist and stayed square in truck body, before it would twist and could see big gaps between fender and secm body.
oh, while the box was off again, we *me and my shop cat* removed the seat boxes on the passenger rear side, was thinking we could get 4 group 31 batteries in the foot well, with some rearranging, 6 group 31 fit, cant say no to more power. you can see the modified S250 rack in this photo.
Next on the list was the wiring for the inverter,the 24v air compressor/24gal tank and the 'not under the hood' under the hood welder, just took alot of chasing wires as many of the wire tags were missing. Thanks to @aghumvee for his schematics and his time one saturday morning chasing wires and photos of an unmolested SECM truck.
Air compressor is a ExtremeOutback, I highly suggest if you are looking for a compressor. 12v and 24v versions are available.
I didnt like how those batteries were just hanging out there for anything to short across, so we build a false floor over them at the same level as the interior floor.
Got a reel from my M970 that is an oxy/acetylene reel with both hoses, and will find an air hose reel for the air hoses, and figure something out later for the welding leads. maybe a hand reel for the welding leads
Big toolbox fit, but just barely, lots of cussing, lots of scratched up paint, but its in
Might be looking for suggestions on what to do with the right rear fender area, looking at pack rat boxes to go between the dead space behind the big tool box and air compressor tank, fuel cans will not stay there.
dropped secm on truck and she sure seemed to squat alot, more that I thought with just an empty box.
so we went shopping for a heavy, found a m1097a2 in wichita with a swamped, locked up motor. had 400 miles, still had foil tape on alot of the openings. towbar'ed it home and picked up another 200 miles. so got to start with a 'new' 20 year old truck with 600 miles on it
drained a little oil off the bottom, no water, checked tranny also, no water, pulled injectors and glowplugs and filled cylinders with a product from oreilleys called Evaporust. let it set a week filling it back full every day.
Tried rolling engine with starter, just clicked, so tried a breaker bar on the front, nothing, tried pry bar on the fly wheel and..... it moved just a hair, and another hair, one tooth at a time forward and backwards, and it finally got a full rotation,
Tried the starter again, still just click and kick the bendix out, could jump the solenoid and it would spin, what the heck, so dropped the started, burned up solenoid would cause some problems.
100 rotations later by hand, no more Evaporust in cylinders, so we fill the cylinders with 15-40 and roll over motor 20 times everyday, refilling oil to try to float any rusty rings again, and order a starter.
Primed up fuel and she ran, pretty rough, but ran, so next is the coolant system, filled with water only for testing purposes and flushing, I get this sludge looking stuff in the top radiator hose, so we pull t-stat and start a deep flush
Couple rounds of radiator flush and new t-stat, finally got a running, moving truck.
Swap over SECM box from 998 to 1097, 1097 has a S250 shelter rack in the back and the SECM is 1/2" too wide to fit, so pull rack for now cause I want to see what squat looks like on the heavy
WOW what an amazing difference in suspension, about 1" squat on heavy compared to 2-2.5" on the 998
No half doors available reasonably priced, so we engine-nerd our own, they work exactly as they should.
Bolted the box in to the truck, just didnt feel rigid for cross country travel, so we 'modified' the S250 rack by cutting the top leg of the angle iron, now its a flat surface the box can sit of and be secured on the ends with. Bolted in and wow, what a difference that 250 mount made of rigidity of the whole truck.
Tire is off ground and box has no twist and stayed square in truck body, before it would twist and could see big gaps between fender and secm body.
oh, while the box was off again, we *me and my shop cat* removed the seat boxes on the passenger rear side, was thinking we could get 4 group 31 batteries in the foot well, with some rearranging, 6 group 31 fit, cant say no to more power. you can see the modified S250 rack in this photo.
Next on the list was the wiring for the inverter,the 24v air compressor/24gal tank and the 'not under the hood' under the hood welder, just took alot of chasing wires as many of the wire tags were missing. Thanks to @aghumvee for his schematics and his time one saturday morning chasing wires and photos of an unmolested SECM truck.
Air compressor is a ExtremeOutback, I highly suggest if you are looking for a compressor. 12v and 24v versions are available.
I didnt like how those batteries were just hanging out there for anything to short across, so we build a false floor over them at the same level as the interior floor.
Got a reel from my M970 that is an oxy/acetylene reel with both hoses, and will find an air hose reel for the air hoses, and figure something out later for the welding leads. maybe a hand reel for the welding leads
Big toolbox fit, but just barely, lots of cussing, lots of scratched up paint, but its in
Might be looking for suggestions on what to do with the right rear fender area, looking at pack rat boxes to go between the dead space behind the big tool box and air compressor tank, fuel cans will not stay there.