Topics Last Week

I haven't checked in on your continuing problems for a while, so please catch me up on what you've done about suspected lack of water flow through the radiator. Does the car overheat? Did you run it without a thermostat to see if flow happened? Did you run it with the thermostat long enough for it to open and allow flow? After reading about all the issues you've experienced for years, I have to wonder what keeps you connected to this Z.

Well, this is a bummer for the day. https://apnews.com/article/ozzy-osbourne-dies-adff88b55f1d3b0bace5705d58d3cdde

He didn't but these guys did.

Interesting beetle frenzy going on. Almost like a whole different brand of car. https://bringatrailer.com/listing/1973-datsun-240z-290/

@Nils Ya, when you press the switch it's supposed to flip into the other position. It sounds like you have a similar issue to what I had originally: I could depress the toggle, it would temporarily switch to the other side, but once I released the switch it would reset back to the original position. Yours sounds a little worse as it isn't even able to temporarily switch. I forget which colors correspond to which, but power comes in through the center connection, and then goes out through the connections on the left or right - one for high beam, one for low beam. Ie, we'll just call the connections 1, 2, and 3, with 1 being high, 2 being the center, and 3 being low. 1-2 would trigger high beams, and 2-3 would trigger low beams. You can test that with continuity. You should never have continuity between 1 and 3. @fredrick that's a spring and a brass cap. It sits in a circular opening in a rocker inside the actual switch housing. The piece is held into the plastic via a roll-pin and is the only part I didn't remove when disassembling the whole thing (I didn't think there was a chance I get it out without it breaking. It's the second picture in the first post This whole setup is quite finicky and I've thought a few times about trying to engineer some kind of replacement, but not sure if the interest would justify it.

I will double check that but I don't believe any of that has been changed since my last test fire. I did remove the combo switches and reinstall. Maybe I messed something up there

@solly I don’t believe you answered my question about the check valve. Trying to offer known problems that cause what you are describing

Called a "reaction disc"

It's always a mistake to paint/powder coat those rear stub axle brake drum flanges, Nissan didn't.

Well you do! You have an excellent camera.

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http://www.zcarblog.com/wp-content/uploads/2022/03/IMG_9042-1024x576.jpg On Saturday, August 30 the Breakfast Club Rally is hosting Tokyo Calling 5, their fifth All-Japanese car rally starting in Sonoma, Ca. To register and see more details, please visit their website HERE http://www.zcarblog.com/wp-content/uploads/2023/06/295347817_10158887321741524_4308179328201520601_n-1024x768.jpg We have run several rallies with Breakfast Club and it is a total blast, you can see our previous event reports HERE. http://www.zcarblog.com/wp-content/uploads/2023/08/IMG_8606-e1693164189785-1024x660.jpeg http://www.zcarblog.com/wp-content/uploads/2022/03/IMG_8882-1024x768.jpeg Stay tuned for caravan information from Z Car Garage. Z you there! http://www.zcarblog.com/wp-content/uploads/2025/07/TC5anim_lg.jpghttp://www.zcarblog.com/wp-content/uploads/2023/08/IMG_8713-1024x768.jpeghttp://www.zcarblog.com/wp-content/uploads/2024/08/IMG_4871.jpg Enjoy this walk-around and driving video from Tokyo Calling 3: View the full article

Yes thankyou! I want sute how that was supposed to work also Thank-you for the recommendation for the efi Bible I have read it and looking forward to doing some of the trouble shooting, the throttle position sensor test looked especially useful ! Thanks to everyone and i am sorry if i missed replying to anybody your all a huge help! I will continue to post my progress in so maybe someone else can benefit from all the info!

Wow!!! That tranny mount is a rel deal. NOOOOOT!!!!

I have some urgent projects around the house which I hope to be able to finish in the following days, but I hope after that I have loads of time for the Z again. So this will be a very quick update: I got some nice documents from Japan again: The first one is the "Z-2" Service Shuho Book, which is the equivalent of the English bulletins. They have become quite pricey recently, so i stick to focus on the most important ones, but when Z-2 (introduction of the Automatic transmission cars) showed up for a reasonable price, i made sure to get it. Here's my collection so far. There are plenty more, which I hope to add to my collection whenever they pop up for a good price. The second document is the December 1973 Nissan sports option catalogue for the HS30 "240Z". It's probably the most extensive one, which is 12-pages strong. It focuses on the HS30 Fairladies only, which means most of the listed parts also fit my HLS30 car. The other catalogues are either much thinner, or focus on a different car (Z432, for e.g.) or a whole range of Cars (240 / 260 / 280Z). But basically, it was a good price and missing in my collection, so that's why I got it. I hope for more updates, soon, I have some things planned... And I have some very cool things waiting to be picked up by me, or on the way here...