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Topic: need help identifying these three things
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nervekiler
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bullet Topic: need help identifying these three things
    Posted: 31 May 2004 at 7:51pm
hey guys, i took some pics of stuff that is out of place in my engine bay of my 82 720.
 
 
 
1.) what are those clipped wires on the right hand side of the pic for? is this my headlights or blinkers or anything important?
 
 
 
2.)  what does this thing go to? it was pocking out of the inner fender and resting behind the front passengers side tire. what is it for?
 
 
3.)  what isthat tube that has a plug in the end? is it a fuel line a vacuum line or anything important?
 
 
thanks. i figured i might as well put all the questions in one post. i appreciate any and all help :)
 
oh and BTW, im getting a haynes manual for the truck. buying it off ebay, just gotta wait for a week or so to get it.
-79 camaro
-84 caprice wagon

soon to be '82 datsun pickup
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datsunaholic
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bullet Posted: 31 May 2004 at 8:22pm
1) First pic, looks like dist. leads. Pretty obvious someone hacked off and/or disconnected half the ignition system- the disconnected wires with rings fire one of the coils and used to be connected in the terminal block. Have to know their colors to tell you for sure, as the washer pump wires were also in that loom at one time.

2) Not a clue. Trace it back to the other end. Is it a pull cable or a coax cable? Could be the antenna lead.

3) Carb fuel return line. Supposed to keep the fuel pump from overloading the carb float valve and flooding the engine. With the Weber on there it's probably missing the parts to hook it back up. Also notice your alternator isn't hooked up.
'64 320
'68 520
'72 521 V6
'74,75,79 620s
'76,78 4X4
'76 KC
'72 510 Wgn
'78 B210
'78,81 510 Wgn
2X '78 510 Coupes
'83 720 KC

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74wagon710
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bullet Posted: 31 May 2004 at 9:16pm
#2 is the antenna for sure. 
74 Datsun 710 wagon, all original now, near perfect shape, project vehicle now.

83 Hell Camino.

07 Civic Si Coupe.

07 Yamaha R1
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Ryan in Seattle
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bullet Posted: 31 May 2004 at 9:41pm
good fun!
1973 620 "Prerunner"
L20B,A87,5spd.Lynx,40dcoe,
header,cammed & bored.
zx oil pump,starter,headbolts
& water pump/pulley.
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nervekiler
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bullet Posted: 01 June 2004 at 8:19am

thanks guys :)

so im gonna need to check the colors of the wires and get a better pic for the first pic? i'll see if i can just hook all the wires back up.

and the antenna lead.. yea that would make sense and is a lot bettter than some of the stuff i imagined that part to be.

and i dont need that fuel return line right? and i'll have to hook that wire back up into the alternator.

thanks again guys for the help. it would have been really hard for me to try and figure out what those parts were without you guys.

-79 camaro
-84 caprice wagon

soon to be '82 datsun pickup
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Ryan in Seattle
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bullet Posted: 01 June 2004 at 5:16pm
1973 620 "Prerunner"
L20B,A87,5spd.Lynx,40dcoe,
header,cammed & bored.
zx oil pump,starter,headbolts
& water pump/pulley.
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pac. coast 521
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bullet Posted: 02 June 2004 at 12:23am
Ahhh, nothing like a good Datsun puzzle!
My 1965 L 320 {all original}

69 L 521 w/KA swap
94 Hardbody [custom]
74 620 project
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nervekiler
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bullet Posted: 02 June 2004 at 8:50am

thanks for the link ryan. i've been looking at different lift kits the last few days. well.. looking for differetn lift kits. so far i know of two for the truck.

in that link you gave me, it says its made for an 83+ truck. mines an 82.. why dont they list it for an 82 as well? is the suspension different?

-79 camaro
-84 caprice wagon

soon to be '82 datsun pickup
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Ryan in Seattle
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bullet Posted: 02 June 2004 at 6:20pm
that i dunno. Datsunaholic would know better than I, I started to think about that link after I posted it.
1973 620 "Prerunner"
L20B,A87,5spd.Lynx,40dcoe,
header,cammed & bored.
zx oil pump,starter,headbolts
& water pump/pulley.
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datsunaholic
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bullet Posted: 02 June 2004 at 10:47pm
I think the T-case is different but not sure. Not up on the 720 4X's, though I have seen body lift kits that list '80-86. Don't know about suspension lift, but it's POSSIBLE the A-arms are different. I know the rear is the same.
'64 320
'68 520
'72 521 V6
'74,75,79 620s
'76,78 4X4
'76 KC
'72 510 Wgn
'78 B210
'78,81 510 Wgn
2X '78 510 Coupes
'83 720 KC

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earwig
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bullet Posted: 08 June 2004 at 4:08pm
it is the front arms that keep changing through the years. so what have you found out there nervekiler?
red'76,620regularcab,longbed L20B,Supertrap,3"shackle4"body 31X10.5X15 chrome pathfinder rims,2tube front,1tube rear bumper,720 5speed&transfercase,Blaster coil,Pertronics ingitor dizzy,WeberDGV,K&N
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nervekiler
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bullet Posted: 08 June 2004 at 7:05pm

well i got all the body parts put back on and got the carb cleaned, new battery and everything. she will turn over now, but wont start. after it gets dark tonight im gonna go check to see if shes sparking. if not, then ill get a new distributor (previous owner says it went out.. was hoping that he was wrong).

and the wiring on this truck is a NIGHTMARE!! that clipped harness must have controlled the blinkers cause they dont work. oh but the hazzards work fine and so do the headlights (it took me forever to figure out how to turn them on). i dunno about the brakelights yet or even how to turn the brights on... (i havent spend much time inside the truck yet.)

 

as for a lift.. i think i might just end up buying the upper A arms and junk, and then trying to fabricate my own from some junkyard springs or something for the rear. but thats on the last of my list now. i just want this thing to get running so i can drive it, then ill finish my camaro so i have a summer hotrod.

-79 camaro
-84 caprice wagon

soon to be '82 datsun pickup
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datsunaholic
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bullet Posted: 09 June 2004 at 12:31am
You couldn't figure out the headlights? Turn the knob on the turn signal stalk. Pull on the stalk to momentarily hit the brights, push it to turn them on full time.

The clipped wires by the coil are NOT the turn signal wires, they are either the secondary coil wires or the windshield washer pump wires (I think they're the latter).

Did you hook the coils back up? The pic showed one coil completely disconnected. In any case EACH coil is fed by a DIFFERENT fuse.

The turn sigs probably have a bad blinker can.
'64 320
'68 520
'72 521 V6
'74,75,79 620s
'76,78 4X4
'76 KC
'72 510 Wgn
'78 B210
'78,81 510 Wgn
2X '78 510 Coupes
'83 720 KC

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nervekiler
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bullet Posted: 09 June 2004 at 11:44pm

thanks datsun :) i got the lights figured out.

but ya i have no blinkers. my hazards work, but the blinker doesnt... does that still sound liek a bad blinker can?

ya i hooked the coils back up. does it matter which one goes to which wire? there is a lot of rust and corrosion on the metal peice inside the coil top.. im gonna have to try and clean it back up to get a good surface for the connection.

where are the coil fuses? ill check those.

 

and the clipped wires.. if they are the secondary coil wires... will the truck still run without them hooked up?

i was out there today trying to get her to fire up but with no luck. i dont know if its getting any spark or not because i dont have the right deep socket to pull the plug and check. ill borrow one from my uncle.. he should have it :)

hopefully i can get this thing running this weekend and fix the blinker problem. getting it running doesnt seem like its gonna be that hard... but i am terrified of trying to fix the blinkers. my camaro had bad blinkers and it took 4 hours to fix.. :(

-79 camaro
-84 caprice wagon

soon to be '82 datsun pickup
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Ryan in Seattle
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bullet Posted: 10 June 2004 at 12:59am
I'm not trying to put you down, but I honestly don't know how much you. Do you know how the naps z engine's ignition system works? why it sports two coils? just curious, a good understanding always helps. If you already do, then hush my mouth.
1973 620 "Prerunner"
L20B,A87,5spd.Lynx,40dcoe,
header,cammed & bored.
zx oil pump,starter,headbolts
& water pump/pulley.
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nervekiler
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bullet Posted: 10 June 2004 at 4:20pm
i have no idea how it works with two coils. im a chevy guy and when i seen two spark plugs for the same cylinder i was saying WTF?!
 
i imagine they just both fire at the same time to give more spark? and if that were the case then i assume it would run with only one working coil.. but since you just posted im guessing that my reasoning probably wasnt the right one.
 
anyways, i want to learn as much as possible about these trucks (engines included).  i ordered a Haynes manual on Ebay.. its been a week now and im still waiting for it in the mail :(
 
please be patient with me. i might not know these engines very well yet, but im am willing to learn :)
-79 camaro
-84 caprice wagon

soon to be '82 datsun pickup
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Hainz
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bullet Posted: 10 June 2004 at 4:44pm
The blickers will have another CAN I assume. Emergency and the blinkers
My 510 has 2 cans. I swapped them and found one was bad.

2coils is no big deal I believe they are in parallel.Which is what you have already power wise. You just need to get the plug wires(NGK set best) and hook them up so when # 1 cylinder is fireing bothe wires from the rotor is connecting. Maybe Datsunaholic can explain this better since I dont have a Napz motor.

YES you have to put the wires on the correct way. Open the cap up and look where the other one goes then the parallel one should go to the same # cylinder.

maybe the clown who had it was cheap to buy 8 plugs all the time. I dont know but some Datsun people dont surprise me anymore.
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datsunaholic
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bullet Posted: 10 June 2004 at 5:20pm
Sure, it'll run on one coil. Provided it's the correct coil.

Problem is, they AREN'T hooked in series. Each coil is on a separate fuse. ONE of the coil fuses also powers the EI unit inside the distributor, so if that coil isn't live, the EI unit won't be live. Doesn't matter if the other coil works, because the EI unit isn't powered by it. Easy check: with the ignition on, is there 12V to the POSITIVE side of EACH coil? If neither has 12V then either they aren't hooked up or the fuses is blown/fusable link is blown. The kicker there is the same fusable link (those are at the battery, not under the dash) that powers the ignition also powers the turn sigs; does ANYTHING that is ignition-only work? (Fuel gauge, reverse lights, oil pressure idiot light, charge light, brake warning idiot light). Things like the wipers and fan blower don't count because they are accessory fuses. Hazards, horn, brake lights, headlights are "Always Hot". All separate fuseblock segments.

And yes, there are 2 blinker cans- one for hazards and one for sigs.
'64 320
'68 520
'72 521 V6
'74,75,79 620s
'76,78 4X4
'76 KC
'72 510 Wgn
'78 B210
'78,81 510 Wgn
2X '78 510 Coupes
'83 720 KC

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Ryan in Seattle
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bullet Posted: 10 June 2004 at 7:33pm
I belive that the reason behind the two coils and sets of plugs was that one fired first, to provide normal combustion, while the other kinda, well, "licked up the leftovers". Follow me? supposta help with emissions, I have howver wondered if you can use a l20 dist. and eliminate the whole 8 plugs and big cap and extra stuff. all right.
1973 620 "Prerunner"
L20B,A87,5spd.Lynx,40dcoe,
header,cammed & bored.
zx oil pump,starter,headbolts
& water pump/pulley.
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Bleach
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bullet Posted: 10 June 2004 at 11:54pm
...there would be no oxygen left for the leftovers, even with a bad burn and running too rich. I would guess they fire at the same time.
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