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Thread: another carb to efi question

  1. #26

    military mase's Avatar
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    so the only hedders for our cars now are pacsetters. ? that blows!! hey smufguy i just went to your site and like the detail work better. thanxs for the info. by the way is there any easier way to get the feul lines out or it's just gonna suck getting em out.



  2. #27
    2.0Si User accordlxi2.0's Avatar
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    umm there's really no better way.
    actully he said you can use the carb fuel line as a return line.
    and the efi line you have to put in.
    which means your gonna have to take out the whole dash assembly.
    unless you have a better way.

    yea it does suck that pacesetter's only make header's for us now....

    so leave em and just add your efi line.
    ****** 1994 nissan maxima SE ******

  3. #28
    3Geez Veteran smufguy's Avatar
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    well to make the efi conversion the whole dash needs to come out when u switch the cabin wiring with the same doors as yours (the dx alone needs to switch its dash wires i guess). like accordlxi2.0 said, the efi return line is the same carb feed line so u dont have to worry about that. but the efi feed line is a bitch. Thats why i got a custom fuel feed line for the efi on sale and accordlxi2.0 said he wanted it.

    military mase, dont forget to switch the fuel tank and get a new fuel filter too. Also, get yourself some long rubber hose and use custom filltings to rig up ur own fuel feed line. Its hard to remove the stock one cause u need to go under the car and bust that locked on nut. but be very careful not to bend the feed line. one small bend and ur done. Cause its made of really thin metal and shit would just crack if u try to bend it back.

  4. #29

    military mase's Avatar
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    yeah. me and myfriend take outthe tank on tuesday or so. as for the line do you think you could make another one or could you tell me how you made you fuel line....we tool out the fuel filter and it looked like it had never been changed at all. so getting a new one is on the top list. as for headers has anyone heard anything about S&S headers. i really don't want to get pacesetters.

  5. #30
    3Geez Veteran smufguy's Avatar
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    military mase, i did not make my fuel hose. It was custom made for $150 when chris had it.

    U can get a 'an' fitting that has the right thread that would get plugged into the fuel filter and u can use that 'an' fitting and order a 20Ft or 15ft of fuel hose for about $30 or $50 from summit racing and make ur own fuel feed line.

    For next year, im doing that. I am redoing my whole fuel system and thats how its gonna be. So see if that works for you, trust me doing custom is much easier than trying to pull the stock one and most of all trying to put that bitch back in. Besides, u already got room on the firewall to pass the hose thru. Just use the AC drain hole.

  6. #31

    military mase's Avatar
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    anyone heard any good info on the S&S headers. i just read a litle about it but there's not much info on them

  7. #32
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    i didn't have that much troubles getting that line out and in of my old car. Once i got the back part (by the tank) out i pushed that all the way back into the trunk untill i could put the line threw the crack in the door. Installed in reverse order. took 2 minutes to take out and on.
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  8. #33
    3Geez Veteran smufguy's Avatar
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    Quote Originally Posted by Immeraufdemhund
    i didn't have that much troubles getting that line out and in of my old car. Once i got the back part (by the tank) out i pushed that all the way back into the trunk untill i could put the line threw the crack in the door. Installed in reverse order. took 2 minutes to take out and on.
    mine took about half hour in the junkyard to pull that shit out. I was mostly scared of the car just falling on me tho it was resting on a pile of tires and sqeaking on every turn of the wrench.

  9. #34

    military mase's Avatar
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    hey smufguy does it make a differance if i keep my old wiring inside the car or do i have to just change the ones in the engine bay. me and my partner have broken down the parts car and almost all of my car that were doing thr transplant in.

  10. #35

    Mike's89AccordLX's Avatar
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    You have to change the wires unfortunately. I had my efi started and then realized my parts cars wiring harness wont work since its a 2 door and mines a 4 door. So I just decided to stay carbed and put a bigger carb on instead of the weber 32/36.

    -Mike

  11. #36

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    Quote Originally Posted by military mase
    hey smufguy does it make a differance if i keep my old wiring inside the car or do i have to just change the ones in the engine bay. me and my partner have broken down the parts car and almost all of my car that were doing thr transplant in.
    Yes, you definitely have to change the front cabin harness. You can't plug the ECU in if you don't. There are also more wires to that harness than the carb one and it's all for more sensors, etc. for the EFI system.
    No projects. Life consumes my time and money.

  12. #37
    3Geez Veteran smufguy's Avatar
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    thats one thing i mention everytime i talk to guys is that, i need the same body style (4dr, coupe or hatchie) for the parts car. The cabin wiring harness needs to be changed, U can stop at the rear pass seat clips cause the rest of the back is the same so all u need is the front half of the cabin wiring harness and the whole engine bay harness. oh yeah, make sure u get the same kinda transmission as yours if possible. 5spd guys can live with auto engine bay harness, but the cabin harness needs to come outta the same type of tranny car.

    hunting down parts might be hard, like the wiring, but the rest is universal for the auto and 5spd, like the intakes and exhaust and gas tanks and stuff. So with all the parts at hand, it should nto be hard.

    next year when i do my other car, i will make sure i will take pictures of the car and write up a thorough how-to which can make a lot of lives easier.

  13. #38

    military mase's Avatar
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    so your saying i need to get the harness out of a 5-speed car if i have five speed??? if so the car i bought was an auto......i guess i have to speed more money then.

  14. #39
    3Geez Veteran smufguy's Avatar
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    well if you got the cabin wiring harness from an auto and ur a 5spd it wont be that bad. u can stll deal with it. Just gotta figure out how to make the reverse switch work. So its not biggie.

    but if anyone with an auto and got a 5spd wirings, well they need to do more fixing than you military_mase.

    the only reason i say this is so that it would be easier for people who do the swap cause it would be more of a plug and play rather than a headache of rammaging thru the shop manual and finding the wiring schematics and making it work.

  15. #40
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    I just noticed that the shop manual from honda says that carb and fuel injection fuel tanks are the same.. that's weird. They cant be.


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  16. #41

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    Quote Originally Posted by smufguy
    well if you got the cabin wiring harness from an auto and ur a 5spd it wont be that bad. u can stll deal with it. Just gotta figure out how to make the reverse switch work. So its not biggie.

    but if anyone with an auto and got a 5spd wirings, well they need to do more fixing than you military_mase.

    the only reason i say this is so that it would be easier for people who do the swap cause it would be more of a plug and play rather than a headache of rammaging thru the shop manual and finding the wiring schematics and making it work.
    Using the auto cabin harness when you're 5 speed causes no problems. With a 5 speed engine harness, wiring the reverse lights is incredibly simple. I got that solved in about 5 mins. If you need any help with that military, let me know. You can still hook them up with an auto engine harness but you have to run you're own wiring.
    No projects. Life consumes my time and money.

  17. #42
    3Geez Veteran smufguy's Avatar
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    Quote Originally Posted by thegreatdane
    I just noticed that the shop manual from honda says that carb and fuel injection fuel tanks are the same.. that's weird. They cant be.
    yep they are not.

  18. #43

    military mase's Avatar
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    thaxs, i'll tell you how the swap went after it's half way done. i just broke down and got my pacesetter (armor coated/ceramic coated) yesterday. they look preety good. well just have to se when they get put on.

  19. #44

    military mase's Avatar
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    ok. smufman i have the wiring all swaped and hooked up except a wire that hooks to the ac unit which i'll re-wire after x-mas. did you just get some new line for the return gas line that goes to the fuel regulator.????? besides that everything went back in so smoothly. just have to put the headers and o2 sensors on.

  20. #45
    3Geez Veteran smufguy's Avatar
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    Quote Originally Posted by military mase
    ok. smufman i have the wiring all swaped and hooked up except a wire that hooks to the ac unit which i'll re-wire after x-mas. did you just get some new line for the return gas line that goes to the fuel regulator.????? besides that everything went back in so smoothly. just have to put the headers and o2 sensors on.
    yeah i got a new line that goes from the fuel reg to the fuel return pipe (its the feed pipe on the carbs). Here is a pic of it.



  21. #46

    SteveDX89's Avatar
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    Like he said, just pull the fuel filter out of your carb feed line and then hook that up to the fuel pressure regulator.
    No projects. Life consumes my time and money.

  22. #47

    military mase's Avatar
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    OK!!! SHE"S DONE!!! and fired up .......just a tiny little problem we ran in to i want to get some imput in on. There is two things that could be wrong. right now the number 2 injector isnt firing up. we checked the plugwires and they all spark and we check all the grounds and connections. could it be the wiring has a break in the line somewhere or could the computer be bad. also to test to see if it isnt the wire does anyone know the computer diagram slot that controls injector #2. we were going to run a wire from the computer straight to the injector. also i toke out the AC unit scince i'm going to do the turbo setup later. will a civic radiator work also and does it matter from which civic to get it from.

  23. #48
    LX User Civvy's Avatar
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    Congrats on the swap man. Have a look at the wiring colours at the injector and see if you can match it at the ECU connectors. I dont know if they go all the way back there.
    I also thought of a civic rad, do u mean because its half the size but double the thickness?? which would give us lots of room for the turbo. and good breathing space. if it doesnt cool enough we could try an additional Facet fan on the front. and run w/o a thermostat. so overheating with one shouldnt be a problem. cant think of any other reasons not to use one.

  24. #49
    2.0Si User accordlxi2.0's Avatar
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    eh i think it'll be fine with the civic rad. and regular fan.
    it'll turn on more often though
    in fact if you can use the big fan from the 3g.
    ****** 1994 nissan maxima SE ******

  25. #50

    military mase's Avatar
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    anybody have any other ideas about the ecu/injector problem??? i'm stumped right now. we dohave a salvage yard that has the ecu i need on standby just in case i need to change it. as for the civc radiator i'll do that next , i'll just have to change the mount bracket

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