Breadbox's 720 Thread

1980-1986 Datsun 720 forums. All 720-specific topics and discussion can be found here.
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breadbox
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I left the fly wheel on the motor on the engine stand and now I know why that makes me stupid. So I am gonna replace the head on the motor in the truck instead I guess.


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breadbox
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Life never goes the way it should and I lose motivation when its cold and rainy.

Seem as tho nice days have been destined for work schedules.

The truck is still in the front yard and surprisingly know one has said anything to me about how tacky(i think its cute) it is.

So family is in town so I am surely to get no work done but April should be my month to get shizz done. My birthday is on the 10th and I might be able to get people to help me set up my garage better. If my truck doesn't run by the end of April, someone slap me.

Once it gets warm I will be stripping the parts truck completely(let me know if anyone wants the shell before I start parting it all) and making an epic garage sale thread.


lownismo
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i saw it said your from va beach im in newport news

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captainzeros
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1981 Datsun 720 Longbed
1973 Datsun 240Z
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It's May..... do we need to slap you?

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breadbox
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OOOOOOh yes I need to be slapped. It's definitely may and the head is still on the shelf.

Although I had the timing chain done on the 240sx and been working everyday or on days off being preoccupied by the Female. This Monday, I should have some hands at my house after work. Hopefully I can get them to help me do the head swap.

If you are bored then Lownismo, Come on over. We can get the grill going and do some manly Truck stuff.

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breadbox
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Well tuesday I had a friend who's a good hobby mechanic come try to help out on my head swap.

We take off the valve cover and the old head looks rebuilt. no carbon, paint marks from assembly still there.
So he's like, "Its probably not your head man, that s*** looks new."

I go buy a compression tester, something I realize I should have bought before buying any project car.

Cylinder 1 120 and holding.
Cylinder 2 150+
Cylinder 3 150+
Cylinder 4 150+

So we call his dad and ask about the first cylinder he said it could be low from not being run in a long time. But that it should be okay to at least get it running for now. We put oil in but i didn't change so i'm not sure its a bad piston or rings yet.

Threw an s14 radiator in real quick because I misplaced the drain plug for the 720 rad.

We got it started but the exhaust manifold needs to be plugged up and I need to get new exhaust gaskets for the cat and muffler and put it back on and then try to tune the carb. but he revved it up to like 5k+ and it sounded great, except for being open down pipe.

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breadbox
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Once running I'll have a reason to redo more things. I was just so pissed when I did a beautiful motor swap and it ran like crap. Also This truck is the last time I am paying a shop to do anything. Also Screw the city of VB for being able to write tickets for cars in your driveway. And screw the neighbors that call the city on me. You are trying to sell your house? Well I'm trying to fix my cars which is impossible when I keep getting cited and needing to make the vehicle in question street legal in 7 days or hide it from public veiw OR the city will legally steal your private property.

Aven
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Man, I don't miss living in VA.

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breadbox
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Yeah it could be better. But the communistwealth of va is where I live, I hope to either go to CA or NC in the next few years.

Aven
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NC & CA, not much in common there. Hope you end up where you want to be. In the mean time, would a portable garage solve your issues? Get you out of the weather and cover the truck. They aren't cheap, but not outrageous.

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MetalFab
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One large downside to CA, strict smog requirements. You can't get away from it anywhere in CA, yet some (rather rural) northern counties have a smog once for life while title is under the same ownership. If you're into any kind of modification, or want to throw just about any bolt-on into your 720 that would remove smog equipment, (or if you're just unlucky enough to have a non smog equipped rig whilst moving here) you're looking at a pretty bill every two years until the vehicle is up to standards. There is a $500 limit (in parts only I believe, not including labor) before you can apply for a deferment, for 2 years. And don't think you can get away for long with swapping in your smog equipment every 2 years for testing, then throwing your weber back on afterward lol. They now have "sniffers" along side the road in cities that are smog laden. Using infrared to measure particles after you drive by and taking a pic of your license plate, Now you've just purchased another trip to the smog shop or ref lol. Not to mention the fines being absurd if a cop pulls you over determined to find some "illegal" mod.

Guess I'm sort of biased, as I live in one of the few places in CA which doesn't have air you can swim through, and yet I'm still forced to deal with this nonsense. I havn't met anyone moving into cali for quite some time, most seem to be moving out. (but for those jumping the border =P) I'm looking for a way out myself, some place with trees, not too far from decent sized cities, and no smog/tire/lift laws =) Good luck wherever you end up moving to, I hope the pro's outweigh the con's.

Aven
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Metalfab, Wa has emissions testing, but if your vehicle is 25 years or older it is exempt from testing. We do have trees, but if you want near Seattle, we have the traffic to go with it. It takes me two plus hours to commute home at night, 57 mile trip with Seattle in the center. And traffic has eased up some with the recession going strong up here. We're looking for a way out of here.

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captainzeros
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1981 Datsun 720 Longbed
1973 Datsun 240Z
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Rural Oregon, no emissions testing.... period, awww yeeeeah

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MetalFab
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Cali was supposed to go with the 30 year thing, but they've been stuck on 1976 and up for some time now. I'm not sure I could handle a 2 hour each way commute, my father did that most of my life, added onto working overtime on a daily basis and I never did see much of him. I'd like to say I'll do different for my kids, but odds are I'll do whatever it takes for the career that see's them through to college. Anyway, a good 1/2-1 hour is great wind-down time, anything more is just asking to get into an accident =)

No Oregon emissions is sexy, if only for rural areas. But I hear bad things about their lift and tire laws. Anything poking out without mudflaps and flares covering em is supposedly an insta-ticket. Not much fun for the 4x4 crowd who don't have trailer queens. Tires sticking way out there is totally droolworthy, and to be honest, The only cracks I've gotten on my windshield were from stock vehicles kicking up rocks on the road. Sure, the ratio of stock rigs vs modified ones is a massive difference. I still say someones lining their pockets, while ignoring the real problem. Road hazards wouldn't end up in windshields if highways were properly maintained.

I have to give props to CA on one point though, we do have well maintained roads.

Hi-jack over =)

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breadbox
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Got the exhaust plugs and Started her up today. Exhaust now only coming out of the cat. Need to get a gasket and some hardware and quiet her down, and start getting her to idle and drive nicely. HOpefully I will have a truck again tomorrow. Also gonna talk to a guy about building my 240sx hatch for turbo.

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breadbox
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Image

Image

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PEZi
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badass man!

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breadbox
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Unfortunately it took a few days to find those plugs.

I recommend finding a hydraulic hose company or something similar. I bought 3 for like $20.

I cant wait to haul dirt or something.

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breadbox
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Got it started but it lopes a bit, seems like its hovering around 1100-1200 rpm, but sounds mush slower so I may have a vac leak or need to tune the carb.

Drove it down the street and back without power steering. And the 4x4 needs it. The front of that truck is heavy.

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breadbox
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DOesn't seem to like running rich because it won't shut off, was redonk. Just keep turning over. My motor shakes pretty bad on shutdown, Bad mounts or poor tune guessing tune but IDK..

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breadbox
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yeah still don't know why it doesn't run perfect. But I drove it around the block and its close to being done.

Gonna change the spark and see if it helps. I still have all my tune up stuff from the other motor. Try new wires and stuff too.

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captainzeros
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1981 Datsun 720 Longbed
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I changed a bunch of menial stuff on my truck without really doing anything major and it did what you described, like, new air filter and new waterpump. Wanted to keep on dieseling for a bit after I pulled the key then died hard with lots of shaking and scaring the crap out of me. After running it some the problem just sort of.... went away on it's own, like, about the second or third time I started it up. It till runs for a bit less than a second after I pull the key out (enough for me to notice, but not enough for other people to notice unless I point it out and say LOOK AT THIS! when I pull the key), but it doesn't do a deathrattle every time I turn it off which is enough for me.

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breadbox
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yeah, I'm kinda afraid to drive it long term without it idling perfect. Maybe I'm been a wuss about it.

I noticed a loose intake plug. This morning I'm gonna find my spark plug socket and tighten them down. I am pretty sure its not a vacuum leak. I messed with all connected wires and heard no difference and everything looks good connection wise.

I swapped out Dizzy cap and wires. Also no real difference. The mixture screw within one turn Either way seems to idle the same, not run worse like it said it would. So i just left it two turns out.

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breadbox
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The death rattle is scary. it like the gas won't stop sucking in and it just keeps going. other times it shuts right down.

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pejsa s-13
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wait so your just gutting the suv 720? or are you planning on rebuilding that too?

cause (IN MY OPINION) i think it would have much cooler to resto the "more rare" one

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breadbox
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eh. if its around in a few, maybe I'll come back too it. You can have it if you want something "rare".

The truck has kinda a metal on metal sound passed 2.5k rpm.

oil pressure is good tho.

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pejsa s-13
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dude i will so take that off your hands if you want to get rid of it :naughty:

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breadbox
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how far away Are you man? I'm in VA Bch.

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MetalFab
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Had that "dieseling" effect on another truck for a while, got into the habit of letting out the clutch in first as I turn the key off (after it revs down, but before it wants to death rattle, and by all means with the foot on the brake!) Which doesn't help at all if you run an automatic lol. I ended up replacing the carb due to linkage reasons and the factory settings on it were whacked, yet it STILL had the dieseling issue. Took it to a retired mechanic neighbor and learned how to throw a tune on it. Didn't need to touch the dizzy at all. It's run fine since. I still drop the clutch in 1st every time I shut it down out of habit. Though I'll still shut it down normally from time to time just for the novelty of it.

Also heard too much carbon buildup in the chamber could absorb fuel, causing this issue, yet I would think that would cause problems sporadically through the cylinder cycle and cause backfires etc. Good luck. :bigthumb:

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breadbox
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Anyone think that my slightly rough idle could be due to a poor valve adjustment. Cuz I haven't switched out plugs for new ones yet. but thinking.


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