siteunseen

Safety Not Guaranteed, '77 280Z 2+2. https://www.imcdb.org/v539305.html I'd forgotten about this quirky movie I watched recently. The 280Z's is one of the main characters car and it is seen a lot throughout.

Something I thought about is the Cold Start Valve, small injector type thing that shoots some fuel on start up. Is there a way to disconnect for his Smog test without getting called out for it? Maybe unplug it but appear to be plugged up? The reason I say this is it's a potential "rich fuel/air" reading for the test if it isn't working right. I know nothing about smog test other than what you guys write about on here. So there's that. I found this from Andrew at MSA. The cols start valve is located right on top of the standard 280z throttle body in the middle of the housing. It's held in by 2 bolts, has a fuel line attached to it and a 2 prong electrical connector. It is essentially an extra fuel injector that adds extra fuel to the intake system of the fuel to help it run while cold, so it get's to operating temperature quicker. It is controlled by the Thermo Time switch in the Thermostat housing and relies on the Water temp sensor and switch in the thermostat housing to be operating properly and accurately as well.

Since you are going for smog test I'd really concentrate on the different coolant temp sensors that calculate the air/fuel ratio. They are in the thermostat housing. There's the thermotine sensor and a coolant sensor you could remove, very carefully-they are precious little things with their old plastic connectors, and clean the brass on them as well as the threads. Don't use teflon tape on those threads, it effects the grounding I've read. You'll be better off draining the antifreeze before you pull them but you probably want to put new in anyway. The 4 wires that connect them also shown as "bullet connectors" should be really clean too. These will make one run rich with low readings when they are "dirty" or corroded. If you don't have one, an auto parts store might lend one out, but air leaks are another thing that will cause the fuel mixture to be off so checking all the old rubber hoses for cracks is a big help with a vacuum gauge. The accordion rubber connecting the AFM to the throttle body is prone to cracks when people remove and reinstall them. If you get one off clean the throttle blade and the actual body or area where it closes with a toothbrush and I use lacquer thinner on aluminum. The blade gets gummy after all these years and won't seal off like it should letting more air get through. Your motor needs to be sealed up tight after the AFM. Unmeasured Air: Any crack or loose clamp between the MAF sensor and the intake manifold will introduce unmetered "unmeasured air" into the system. This confuses the ECU, resulting in a lean air-fuel mixture, rough idling, and engine hesitation. I'm not sure if you have the whole atlanticz tech tips so here it is just in case. Electrical and EFI and Fuel are two of the best. https://atlanticz.ca/zclub/techtips/

I did have mine "skimmed" at my favorite machine shop. It was too shiny and I think he said because of heat? Any way he looked at the rivets and said he could do it as they weren't flush with the plate.

I got a Tilton/Tifton? with a car I bought way back when. It weighs around 10lbs. Put it on my 2.4 when I rebuilt the motor and boy oh boy do I love it. Revs like a motorcycle, quick up and down. With exhaust I have it sounds like a motorcycle too. I'd recommend everybody switch, right now.

Here's a fairly quick task that helps a lot. Cleaning the electrical connections makes them run, idle much better. https://www.atlanticz.ca/zclub/techtips/electricalconnections/index.html

Nice, congratulations on your purchase. I like the automatic hadn't been driven to hard, totally agree. Get some covers for the fusible link block. They're cheap on ebay, https://zcardepot.com/products/fusible-link-cover-oem-260z-280z-74-78?_pos=1&_sid=dafc32314&_ss=r

This place is beautiful from the pictures I've seen. I know the 2 Arkansas guys always went, @Zup @S30Driver Still drinking from the coffee cup they gave me, us, and wearing the t-shirt. Those two are great guys, maybe we'll get a response?

No guitar, bass has only 2 strings and they make made this awesome music.

You are this best! Enjoy the weather while you can, it'll change soon enough.

The strike through I love it! It's not perfect passive aggressive.

It's pouring rain here at the moment but tomorrow I can get it out and get some pics of those areas. Mr Arnett will beat me to it with better pictures. He always does.

Yes! Could've saved me some antifreeze and the resulting clean up of said antifreeze. My dog goes down there alone 3 or 4 times a day to go outside through his "doggy door". I worry messing with antifreeze because of him and his always hungry personality. Could be another Jamestown someday?

Id drain the tank if haven't. O'Reillys has the filter pretty cheap. Do the G3 pre filter. O'Reillys has their store brand, I think fram is no more? https://www.atlanticz.ca/zclub/techtips/fuel/g3filter/index.htm Run the new clear pre filter and check it out. You may need a tank cleaning and coating, that's rusty looking. About as bad as a 240 I bought.

I bought my bumpers and tail lights from this guy. Years ago but best price then, I think he had some black Friday sale or something. https://www.futofab.com/

My HLS30-69,??? early 1972 never painted. #1 bottom of hatch where it meets the slam panel #2 slam panel latch #3, 4, 5 inside hatch shot of push button latch #6 one of two holes under hatch where it hits slam panel with the plugs shown later installed #7 empty hole without plug #8 hardboard access cover under hatch where it hits slam panel. Cracked hardboard but my interior guy used some thin galvanized metal glued on backside to keep it straight. Nissan rubber plugs for the holes. Measured the hole and my Nissan parts guy found them as "heater grommets" I have access downstairs walk if you need more. No problem at all. I'm not doing anything ever...don't hesitate to ask. @conedodger

Damn it man! Our timing is off.

They also have a one piece. Z Car Depot IncCoolant Temperature Sensor One Piece 240Z 260Z 280Z 280ZX...Coolant Temperature Sensor One Piece 240Z 260Z 280Z - 800-693 (). Engine coolant temperature sensor in a one piece design.

Well crap! Now I've gotta pull it to see for my self. I won't be able to sleep tonight.

My '77 has a one part sensor in it. I know this for sure as I had it out testing it, or trying to with the help of @SteveJ about 2 weeks ago. Not saying it won't work but that's what is in it know. I'll try and find the pictures I sent Steve through direct messaging. Just woke up, need more coffee right now. If I remember right my '72 has the nut that holds it in. Apparently it's been more than 30 days we were texting those photos of my sensor and my ohm meter, they're gone out of my gallery trash bin. Sorry, I'll have it back out soon to replace and maybe make a fool out of myself for being completely wrong.

I think I would "pre" install that sensor into the new housing. Scares me, I'm about to buy the same newer sensor but seeing what you have side by side looks a little off???

This is a good one to read if you haven't. https://datsunzgarage.us/ Best "how to" book you'll ever find if you can find one. I completely removed and rebuilt my first car motor, N42/N47, with some common mechanical sense and this book, all by myself. My Dad was dying to get involved but I needed him for 1 hour when I dropped the rebuilt motor/transmission combo back in my '77. I was terrified of dropping that thing on my car by myself. Getting the hood off then back on would have been a little easier with some help but I figured it out. And the help of this forum was priceless. Make some friends by posting photos of your work and if you ask for help do what they say.

If it's a US ZX that n42 and n47 are out of a 280Z, 1977 or 1978. The right motor combo would be f54 block and p79 cylinder head for 1980ZX. f54 block has flat tops but the n42s have dished pistons. I'll send you some links tomorrow morning when I've got my laptop opened up.