sandcarsunltd Posted April 13, 2018 Report Share Posted April 13, 2018 new to the forum so not sure how to search it I'm sure its been discussed 77 king cab 620 got to have power steering I'm guessing a 720 ps box? 1 Quote Link to comment
difrangia Posted April 13, 2018 Report Share Posted April 13, 2018 Did any of the 620 camper versions have PS ?? 1 Quote Link to comment
datzenmike Posted April 13, 2018 Report Share Posted April 13, 2018 The 720 pitman arm is on the outside of the frame the 620 is inside, won't work.I used an early 280zx power steering box and the 620 pitman arm spline bolted right up. I made my own bracket to hold a 720 or Hardbody pump that used a remote reservoir on the inner fender and mounted it under the distributor where the air pump would be. A better idea would be the ones used in the 720 or later 200sx that had the integral reservoir on it, but it worked like a charm. 3 Quote Link to comment
G-Duax Posted April 14, 2018 Report Share Posted April 14, 2018 620 power steering: But it really isn't that bad if you know how to deal with non-power steering. The only time it's hard is when it's standing still. Just put a good pull on the wheel, and start moving, and everything get's easier. Even on my 620, with a 12.5" Momo steering wheel, and rather fat 225x60-15 tires. By 10 mph, it's almost effortless. 3 Quote Link to comment
racerx Posted April 14, 2018 Report Share Posted April 14, 2018 People are just spoiled... 4 Quote Link to comment
datzenmike Posted April 14, 2018 Report Share Posted April 14, 2018 Yes and no. Can't get up to 10MPH when parking, so I parked farther out in the parking lots so I could just drive away. Whenever I stopped I always was thinking of how I was leaving. That was a pita. Once rolling it was easier, but PS allowed me to throw the 3,400 pound truck instantly into the other lane to avoid problems. PS may also have had better ratio it was quicker and nimbler at all speeds and at the end of a drive around town you weren't feeling like you were just leaving the gym. Anything that can get you out of trouble's way faster and reduce driver's fatigue is a good thing. 2 Quote Link to comment
racerx Posted April 14, 2018 Report Share Posted April 14, 2018 Fatigue? Traffic is what burns me out not lack of power steering. 1 Quote Link to comment
Seeker > 620 KC Posted April 16, 2018 Report Share Posted April 16, 2018 The 720 pitman arm is on the outside of the frame the 620 is inside, won't work. I used an early 280zx power steering box and the 620 pitman arm spline bolted right up. I made my own bracket to hold a 720 or Hardbody pump that used a remote reservoir on the inner fender and mounted it under the distributor where the air pump would be. A better idea would be the ones used in the 720 or later 200sx that had the integral reservoir on it, but it worked like a charm. Did the 280ZX steering box use same mounting holes, or did you have to make a bracket or drill holes in frame? 1 Quote Link to comment
KoHeartsGPA Posted April 16, 2018 Report Share Posted April 16, 2018 I've got a KA in mine and I really don't feel the need for PS.... 1 Quote Link to comment
datzenmike Posted April 16, 2018 Report Share Posted April 16, 2018 2 of the 3 or 3 of the 4 lined up after some filing. I have a welder now and would do it differently. It was a lot of work but the results well worth it. With 33" tires and 3,400 pounds it was a monster. Today I would look at electric steering from a Saturn Ion. 2 Quote Link to comment
Seeker > 620 KC Posted April 16, 2018 Report Share Posted April 16, 2018 2 of the 3 or 3 of the 4 lined up after some filing. I have a welder now and would do it differently. It was a lot of work but the results well worth it. With 33" tires and 3,400 pounds it was a monster. Today I would look at electric steering from a Saturn Ion. Why electric, whats’s the advantages? I saw an electric PS on a 521, and the motor was hanging low over the foot pedals. At 6’4” and size 13 shoes I really didn’t care for it. 1 Quote Link to comment
datzenmike Posted April 16, 2018 Report Share Posted April 16, 2018 Advantage? Not having to find a suitable PS steering box that will fit a truck and shorten the steering column, (I used a 720 column) hydraulic lines and adapt some sort of pump and mount to make everything work. I think there is more room on a truck for electric PS than a car. Maybe it wasn't done very well. 1 Quote Link to comment
]2eDeYe Posted April 16, 2018 Report Share Posted April 16, 2018 People are just spoiled... Some people have 35" tall tires :lol: 1 Quote Link to comment
Seeker > 620 KC Posted April 16, 2018 Report Share Posted April 16, 2018 Oooh, swapping out a steering column, steering box, and fabbing a pump/reservoir installation is certainly more work for sure. Has anyone done a thread on a Saturn Ion install in a 620? 1 Quote Link to comment
red13 Posted April 18, 2018 Report Share Posted April 18, 2018 Eletric power steering many options, also I was looking into getting a rhd toyota box, it bolted on the outside of the frame. So lhd it would bolt inside. It has similar parts as the 620. just havent found a box yet 1 Quote Link to comment
Seeker > 620 KC Posted April 27, 2018 Report Share Posted April 27, 2018 Advantage? Not having to find a suitable PS steering box that will fit a truck and shorten the steering column, (I used a 720 column) hydraulic lines and adapt some sort of pump and mount to make everything work. I think there is more room on a truck for electric PS than a car. Maybe it wasn't done very well. I’m still intrigued by this mechanical/ hydraulic conversion. Was the 720 column the correct shorter length that bolted right up to the box and dash? Did you end up using the 720 locking ignition, turn sig switch and clam shell? What was it you thought might not have been done very well? Did the column look out of place? Or just the home-made pump brackets? 1 Quote Link to comment
Seeker > 620 KC Posted April 27, 2018 Report Share Posted April 27, 2018 Also, did you use the tilt wheel 720 column or non-tilt column? 1 Quote Link to comment
datzenmike Posted April 27, 2018 Report Share Posted April 27, 2018 Seeker I swapped a 720 dash into the 620 complete with heater and wire harness. I used a 720 steering column and could then use the 720 clam shell and headlight and turn signal stalks on it, even managed the adjustable pulse delay wipers. To mate the column to the PS box I made a custom rag joint. The PS pump just barely cleared the steering box. It was a huge amount of work and I was very lucky and I know it. 2 Quote Link to comment
]2eDeYe Posted April 27, 2018 Report Share Posted April 27, 2018 I used a 720 column in my 4x4, with a toyota box outside the frame rail. I kept the 620 dash :) 2 Quote Link to comment
Seeker > 620 KC Posted April 27, 2018 Report Share Posted April 27, 2018 Dang it! The things we got away in earlier years when we had more time and flexibility, than we had money and 2nd thoughts. Much appreciated. 1 Quote Link to comment
Seeker > 620 KC Posted April 27, 2018 Report Share Posted April 27, 2018 I used a 720 column in my 4x4, with a toyota box outside the frame rail. I kept the 620 dash :) All bolt in? Or welding fab require? 1 Quote Link to comment
datzenmike Posted April 27, 2018 Report Share Posted April 27, 2018 I looked a Toy PS box but didn't like the drag link set up. I used a Toy SAS with a steering link from the PS box over to the passenger side by taking a lower steering knuckle and flipping it upside down and bolting it on top. This prevented bump steer. The lower two stock steering knuckles are joined together across the front. Steer the pass side and the driver's side has to follow. 3 Quote Link to comment
Seeker > 620 KC Posted April 27, 2018 Report Share Posted April 27, 2018 Oh man, you're right about a lot of work. Much more than I can handle at this point. I'm out. If it was all bolt in and pressing that's easy and I might consider it. Now I see why you said you'd consider a Scion conversion instead. What's the SAS? Is that a Toy model number, or an abbrev for a part? 1 Quote Link to comment
]2eDeYe Posted April 27, 2018 Report Share Posted April 27, 2018 All bolt in? Or welding fab require? It bolted in a bit hack. But it wasn't in the best position. The rag joint setup I used at the beginning did not last either. I redid it later and sleeved/welded the end of the 620 column on to retain the stock column surround and ignition location. I changed out the rag joint to a u-joint slip shaft. The finalized column stuff starts on this page of my build thread. http://community.ratsun.net/topic/35996-1978-620-king-cab-4x4/page-50 I am still in the process of purging the thread of photobucket, but I made sure to update the pics of the steering fab on that page. 2 Quote Link to comment
]2eDeYe Posted April 27, 2018 Report Share Posted April 27, 2018 Oh man, you're right about a lot of work. Much more than I can handle at this point. I'm out. If it was all bolt in and pressing that's easy and I might consider it. Now I see why you said you'd consider a Scion conversion instead. What's the SAS? Is that a Toy model number, or an abbrev for a part? SAS is short for Solid Axle Swap. If you go 4x4, you want power steering. :) The closest to bolt in you will get is the 720 column and the 280 ZX steering box. 4 Quote Link to comment
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