Cruzn620 Posted July 7, 2014 Report Share Posted July 7, 2014 I'm just about ready to FINALLY do my KA swap into my 620. I have the motor mounts, I have a nice, mechanically sound '94 Hardbody that I'm currently driving daily to get my motor, trans and wiring from and before me and my buddy dive into it, because we're going to TRY to complete the swap in 4 days, I just wanted to make sure that we won't run into a stumbling block other than the ones that everyone will encounter along the way. I've done a lot of research and our main concern is fuel pressure. A lot of people are running walbro 255's in-line from what I can tell, is this the best way to go? I'd like to avoid doing a fuel cell and all of that stuff if I can. I bought headers for the KA motor in an attempt to free up some room, the motor is getting a new water pump, plugs, wires and cap before it finds its new home and my friend who is helping with the swap owns a muffler shop, so custom routing won't be an issue there. Because I'm taking everything from a running vehicle, including the wiring and computers, I'm thinking as long as everything is well labeled I should be ok. From all of the build threads I have read on, I haven't seen any major complications, I just wanted to make one last check. As for Air Conditioning...which I REALLY want to keep...opinions here, try to take everything out of the nissan and make it fit in the datsun as far as the under the dash stuff goes or should I try to buy Datsun parts for the trucks with AC and retro fit? Best idea for sending units and gauges? I want to keep things as stock looking on the interior as possible, but I'm pretty sure that the nissan wiring/sending units/gauges won't just wire right up to the datsun stuff. If I have to go aftermarket, so be it, but I really like the stock classic look. Thanks for all of the help! Quote Link to comment
heretic Posted July 7, 2014 Report Share Posted July 7, 2014 I'm sure someone will chime in.... what I've read... you want the 240sx engine wire harness because it is not integrated into the chassis harness like the D21. Take lots of pics & keep us posted. Quote Link to comment
Cruzn620 Posted July 8, 2014 Author Report Share Posted July 8, 2014 I'm not wasting time with a 240 harness...have a running, driving D21...if I have to take the entire harness out, chassis and all, I will. I'm sure the 35 year old harness in my datto could use the update...hahahaha Quote Link to comment
Nuclear Water Boy Posted July 9, 2014 Report Share Posted July 9, 2014 I'm just about ready to FINALLY do my KA swap into my 620. I have the motor mounts, I have a nice, mechanically sound '94 Hardbody that I'm currently driving daily to get my motor, trans and wiring from and before me and my buddy dive into it, because we're going to TRY to complete the swap in 4 days, I just wanted to make sure that we won't run into a stumbling block other than the ones that everyone will encounter along the way. I've done a lot of research and our main concern is fuel pressure. A lot of people are running walbro 255's in-line from what I can tell, is this the best way to go? I'd like to avoid doing a fuel cell and all of that stuff if I can. I bought headers for the KA motor in an attempt to free up some room, the motor is getting a new water pump, plugs, wires and cap before it finds its new home and my friend who is helping with the swap owns a muffler shop, so custom routing won't be an issue there. Because I'm taking everything from a running vehicle, including the wiring and computers, I'm thinking as long as everything is well labeled I should be ok. From all of the build threads I have read on, I haven't seen any major complications, I just wanted to make one last check. As for Air Conditioning...which I REALLY want to keep...opinions here, try to take everything out of the nissan and make it fit in the datsun as far as the under the dash stuff goes or should I try to buy Datsun parts for the trucks with AC and retro fit? Best idea for sending units and gauges? I want to keep things as stock looking on the interior as possible, but I'm pretty sure that the nissan wiring/sending units/gauges won't just wire right up to the datsun stuff. If I have to go aftermarket, so be it, but I really like the stock classic look. Thanks for all of the help! I have the S14 SR20DE in my 510 and running a Walbro 190 externally and it isn't noisey, got it on Ebay $90 5 years ago. It works great and no issues. I have read that the 255's have a tendency to run a bit rich. Quote Link to comment
dime'n daily Posted July 10, 2014 Report Share Posted July 10, 2014 honestly if possible id swap your intake manifold out to a 240sx one, and engine wire harness if possible it makes it a lot easier and cleaner looking... and what are you going to use for wiring? can am? Quote Link to comment
dime'n daily Posted July 10, 2014 Report Share Posted July 10, 2014 and both are not expensive at all and well worth it Quote Link to comment
Cruzn620 Posted July 10, 2014 Author Report Share Posted July 10, 2014 I'm pretty much plugging and playing from my hardbody as far as the wiring. My stock 620 harness was so mangled from it's previous owner that it's pretty much useless. I know there's going to be a lot of connector splicing for the chassis electrical like the lights, but i'm an amateur electrician, so everything should be fine right? HAHAHAHAHAHA. I know everybody uses the 240 intakes and such, but I'm not going for speed, just a reliable motor that will move Dotty down the road. Can't wait to drive her again. Quote Link to comment
dime'n daily Posted July 10, 2014 Report Share Posted July 10, 2014 have u done research on Ka and Efi swaps? it's been done alot but u will need a way of wiring it up, be it your own way or simplest choice a can am box... it will save you a headache...and the 240 manifold and harness is just for simplicity and cleanliness not for power. just throwing in my 2 cents Quote Link to comment
dime'n daily Posted July 10, 2014 Report Share Posted July 10, 2014 also the hardbody harness is integrated with chassis harness and thats a pain in the ass..and you will need motor mount brackets..redeye (a member on here) makes brackets for 620 ka swaps. thats just a few things to scratch the surface Quote Link to comment
Cruzn620 Posted July 10, 2014 Author Report Share Posted July 10, 2014 I already have Redeye's mounts. I know that the truck harness has the motor and chassis electrical all together, and I know it's going to be tedious getting everything wired in, but my datsun currently has NO wiring in it at all because of how mangled it's harness was. If i'm taking a harness out of a running truck and putting it into a bare chassis, I guess I'm not understanding why I need a can am box. I'm pretty much hanging a datsun body on a nissan chassis at the end of the day. If the truck is running now, I'm not sure why I need another control system. Quote Link to comment
bonvo Posted July 10, 2014 Report Share Posted July 10, 2014 if your taking the entire harness from the donor truck you should be able to basicly be plug and play so long as you have a fiactory wiring diagram for both trucks to make the 70s switches and such work with the 90s harness as for the ac take everything ac related from the hardbody but find the under dash stuff for the datsun to make your life the easiest trust me ive retrofitted ac into a datto its alot easier to find bolt in parts Quote Link to comment
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