SupremeCling

I just disassembled the N47 intake manifold off of the head, and started to work on the rest. Then discovered about 4 days later about the specific details around emissions. It was a pain! The sale is currently pending, with a down payment. Now looking for a 240z!

The main problem is that I really want carburetors

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Unfortunately in Colorado their is a hard stop on classics starting in 1975. To be considered a classic after 1975, the car has to have been registered as a classic prior to Sept. 1, 2009, and the registration has never lapsed or expired. The alternate is if the car is 32 years old or older, where it then has to pass emissions once but can't exceed 4,500 miles a year. In short, I have to fuel inject with EGR and pass emissions

I am still pretty excited about the Z, and if I had 10k more I would probably just go buy a 240z and keep both of these. Right now I am kind of 50/50 on the car and am going to keep restoring it until someone buys it or I fix it all the way. But with the emissions details I just learned, it won't be the "dream" car I thought of and so would rather sink my time into one that achieves that vision if I have the choice. Don't get me wrong, I will never not love the s30's! 🙂

View Advert 1978 Datsun 280z I bought this car a couple months ago, and 1 simple device broke leading to me wanting to look elsewhere. 66,000 original miles 4 speed factory AC The car was my daily until it began to overheat. Turns out the EGR broke, leaking exhaust right into the bay and causing the engine to heat fast. In fixing the EGR, the bold connecting to the exhaust manifold broke. To fix the EGR and Exhaust Manifold, you must take off the Intake Manifold. Knowing that, I decided I wanted to convert it to carbureted instead of fuel injection. I started working on that removing the intake manifold, radiator and alternator. I just learned that my vision for the car wont fly in Colorado with the new emissions regulations having a hard start in 1975. This kind of breaks my dream for this car, and considering i think it would be best with someone else. If you have a solution please let me know. If you have an offer, I welcome all. At the very least, I love to talk about these cars Advertiser SupremeCling Date 11/30/2021 Price $10,000 Category Cars for Sale Year 1978 Model 280z Vehicle Identification Number (VIN)

I have decided that the right thing to do for my Z is rebuild it. I had planned to do so eventually, but much later down the line in my ownership. Here is why: Rust on Floor Pans needs replaced Rust on Lower Front Fenders and Dog Legs needs replaced This post resulted in this: Broke head off of bolt in exhaust manifold that connected EGR to exhaust manifold which means I need to remove the intake manifold to replace the exhaust manifold Discovered more surface rust that is on the cusp of becoming cancerous rust Needs repainted After discovering more rust when working on the EGR, I could no longer avoid what I knew was coming. I love these cars so much, that I would not feel right letting this one get in any worse condition. It is a real bummer too, because the engine and transmission have less than 70,000 original miles on it. I do have logistical problems though. Primarily being that I live in Lodo of Denver, Colorado and do not have a garage to work on the car. My brother offered to let me use his garage in his new house, but he bought the house a week ago. And I have never done a rebuild before, so I am learning as I go So...does anyone want to rebuild a 280z with me? I am sure I am going to need tons of help any way, but wanted to see if anyone wanted to work on a car for sport!

Yes, that is what I meant by kit. I posted the parts above as: Plate Plug (both long and short) Vacuum Caps

Turns out I have diamond ports! Any recommendations on aftermarket headers with diamond ports?

Is there a way to find out without taking the exhaust manifold off to check?

Do you have any recommendations on headers? I believe the L28 block has square shaped ports, but most headers seem to have circle shaped ports. Do you have any insight on that?

Follow Up: On the 18th of September, I began to work on EGR after receiving the EGR Delete Kit. The install of the plate was simple. Although, I believe I might have taken a bit too much off the manifold when using a Dremel to try and remove the caked on gasket. But that wont matter, because I will likely have to remove the Intake Manifold now... I soaked the nut/bolt that holds the EGR pipe to the Exhaust Manifold several times in several de-locking treatments. The head still broke off because the piece is likely rust welded into the manifold. So now I need to manage that issue. I am thinking of just going straight for headers and upgrading the exhaust system all together. Of course I am entertaining all thoughts and would love your feedback!

I really might go that direction. It would be hard to abandon my vision for the car. Maybe ill just come back to it in the future That is one of the greatest things about these S30s. You can continue to work on them and change them

Dayum Those Jenvey's look really nice. And way cheaper than Mikuni Any experience with them?

Awesome detail! I guess it just feels odd to have a port of any type open!

Would that mean abandoning the Mikuni path, and just going full fuel injection? I feel like the Bosch FI system was already acting as an EFI. Or are you suggesting to apply EFI to Carb's? I am just open to the fact that I am new to this sort of modification and have some learning to do!😃

I did do a search, and a Google Search of "EGR classiczcars.com" but couldn't find anything for it. I am not saying it does not exist, but am saying that I could not find one. I am sure it is helpful. I have not checked the heater core at all, but have not been running heat at all. I know that the heater core serves as other purposes too though. But, now that you mention it there could be an issue with it that I have not considered. The cabin of the S30 is incredibly hot, and being new to owning a Z...I was not sure if that is normal or not. On the under-side of the Intake Manifold where the EGR is though, you are essentially saying that I do not need to worry about it. That the opening only functions if gases are being pumped into it, and that leaving it open will propose no major risk?

I intentionally made a story out of this, because I personally like to read the stories of others. Furthermore, I find a little background story helpful when trying to help other find a solution to any issue! If you dont want to read the background, skip on down past it 😃 Background: I bought my '78 S30 on July 13th, 2021. It had roughly 66,000 miles on it and now has 67,651 miles on it. Prior to my ownership, the car sat for ~10 years. Before that, the story was not clear. On August 31st, 2021 I was driving from (Bellevue & I25, Colorado) to (Kipling & I70, Colorado) which is about a 40 minute drive, when it was roughly 93 degrees Fahrenheit out in heavy traffic. For the first time, my Z was overheating and just about to hit 250 degrees Fahrenheit on the thermometer roughly 35 minutes into the trip. I pulled over, expecting to see no coolant or some issue... except I saw nothing alarming. While it might be shocking to see the coolant boiling in the coolant reservoir, there were no visible issues. I let the car cool down for about 45 minutes, and drove to my destination. Started it back up again maybe 90 minutes later to drive home, which is about a 20min drive. The car started to build temperature about 15 minutes in, but not like it did when I first noticed the issue. This time it got closer to 200-225 degrees Fahrenheit, which was still a bit alarming. I parked it and had wait until September 5th, 2021 (the weekend) to work on it and diagnose the issue. My first thought was that the fluids needed flushed and changed. The previous owner told me that he drained the gas tank, changed the brake fluid and front brake pads before he started it. But I doubted that he had changed the coolant, and it looked a bit dark. So being a greenhorn DIY mechanic, I bought some tools (which I am stoked to have now) and started to work on the car. I drain the radiator fluid, put the radiator flush in, start the car to cycle it (this time with the hood open...which we typically dont do when we are going for a ride), and the car sounds a bit louder. I get out, with the car on, and try to find the source of this noise and I find a pipe that should be connected to the exhaust manifold that is rusted off. And I have no idea what this part is. A couple Google searches, and I discovered it is the EGR. I touch the device and it is clearly hanging by almost nothing. A couple solid speed bumps and it would have just fallen off. I wiggle the pipe, and it simply disconnects. The EGR is still mounted, but it is not truly functioning without the exhaust pipe. So now I am thinking, the issue was not the radiator. The issue was that exhaust was just pumping into the engine bay. And exhaust is kind of hot... But now I cant start the car to flush the radiator cleaner out, because without the EGR there is no vacuum. My simple fix is to just use heat tape, and cover the EGR ports to start the car and cycle the Radiator Flush. This is not a solve I would use daily, and I understand is risky. The Issue(s): The Engine is overheating Discovering that the EGR pipe is broken...broken parts are not good. But this could be the reason the engine is overheating. Solution: After a little research, an EGR delete seems to be the quickest solution. I want to convert the L28 to carburetors soon which made it seem fiscally unsound to fix the EGR now. I cannot find Mikuni PHH 44 side drafts for under $4k. So I am waiting to buy some after I fix the floor pan rust. The EGR delete seems pretty straight forward: Buy the EGR delete plate for the EGR port on the intake manifold, and plug the exhaust. I cannot find solid research as to what to do with the opening on the bottom side of the intake manifold where the pipe from the exhaust manifold connects to the intake manifold. I am hopping that the same 22mm plug for the exhaust manifold fits the intake manifold as well. Here are the parts I bought to do this delete: Plate Plug (both long and short) Vacuum Caps Then finish with the radiator flush. Questions: Is there a viable solution to plugging the bottom of the intake manifold where the pipe connects the exhaust manifold to the intake manifold? Would the open exhaust be the most likely culprit behind the over heating the engine? Do you have any general tips on this EGR delete process? What Coolant do you prefer for your L28? Are there any products to specifically stay away from?

Nothing interesting after the show. If we met, we met at ZCon!

Big Smile on my face after learning a (previous) stranger took a picture of my Z

It is pronounced "sailor" but spelled Seyler. You have got the right guy!!

Thank you! I was at Zcon 2021, it was a blast. I could only make it to Saturday though, which felt like a great day anyway. I was in LoDo to try and catch the "Invade Denver" segment. But after driving around downtown for 2 hours, I gave up when I did not see a single Z.

That is freaking awesome. When I was searching, I was not a huge fan of the green color or really any color other than that wasn't a version of the yellow, or blue. But the green deeply grew on me. There are few cars that have a greater color collaboration than the tan interior and green paint your Datsun hosts. Send more pictures, glad to find a local friend! If you still work on yours, PM me. I want to get my hands in mines all the time!

Hello, My name is Seyler from Colorado, and I am an S30 addict. I am glad to finally be here, as I now own my first S30, a Black Pearl. While I have fed my addiction on my own for some time, I know I will need help to manage my addiction. I only hope to be able to pass along the help I receive to those who will also need help with their addiction in the future.

View Advert Mikuni/Solex PHH 44 Hello, Well I am really just dying to get some Mikuni PHH 44 or greater. I know they are hard to come by, and I have been combing the web for them. I am posting this in hopes that you might have some that are lying around or you forgot about. I would love to buy them Advertiser SupremeCling Date 08/30/2021 Price Category Parts Wanted Year 0 Model S30