Restoration of BringaTrailer 240z - HLS30-35883

[HS30-H]

1 hour ago, dutchzcarguy said:

It needs to be just a little stripe of paint that indicates if a screw has come loose after some time..

No. It indicated that the fastener had been torqued to spec on assembly and checked. Nothing after that.

[dutchzcarguy]

Yes, and you do this after you torqued that particular bolt.. not all at once on a sunny afternoon when you feel like painting them all at once haha..

But.. if you make a stripe, you can ALSO see what moved! 😉

[HS30-H]

1 minute ago, dutchzcarguy said:

But.. if you make a stripe, you can ALSO see what moved! 

But that's not what is being discussed here. The yellow marks were applied on the production line to show that a check had been performed, that's all. Nobody was checking them for movement anywhere after that. 

Tell-tale markings - as used on race cars, for example - are a different thing. Usually thin stripes or dot points on adjacent components that can be quickly checked by eye. Like this:

 

[emccallum]

The yellow marks from the factory were applied pretty sloppy, like inline6 did. Here is a good reference of an original car, check out the under pictures

 

https://bringatrailer.com/listing/1971-datsun-240z-124/

[inline6]

Right, my understanding is that the yellow paint marks were applied at the factory to indicated the fastener had been torqued.  If you have a look at the paint markings on the 240z that sold on BringaTrailer for $310,000 US a few years ago, starting at about picture number 168, you will see that the paint was applied quite messily:  
https://bringatrailer.com/listing/1971-datsun-240z-124/
 

And, for what it is worth, I personally torqued all of these fasteners to spec! 

Edited February 19 by inline6

[inline6]

This past weekend, I moved all of my project cars around to facilitate getting started on the "track car" - my 240Z with a prod date of 12/70:

      

 

    

I blew the motor up at Road Atlanta 9 years ago.  It took many of those years to get a replacement, but I have that sitting in the corner of the shop. 

While I had the project cars out of the "shop", I organized some things and put a bunch of parts away in boxes and on shelves.  Then I put them back in the garage.  My order of attack will be to bring this 240Z back to life, then repair my wrecked 2004 Honda S2000, and then build the 1970 510.  Unsure how long it will take, but going to guess 6 months or so on the Z.  Hopefully less than a year on the S2000.  And, I really don't know how long for the 510:

Probably several years.

But I still have some things to finish up with this restoration.  I removed my wide band O2 sensor from the track car yesterday and will be installing that in the newly restored 240Z soon to see what I have going on for air/fuel ratios. I'll be able to record some data with this and the wide band O2: