I'm sure the mouse trap springs were polished as well. 

It cost a little more but I had my lash pads polished on the last rebuild I did. I think I read that in the Honsowetz book?

That blue looks good in the picture by the way. I wonder if that is the actual head that was installed or more "trickery" from California Datsun? Lipstick on a head.

 

18 hours ago, Zed Head said:

Just kind of funny.  Nice looking car though. 

"rebuilt cylinder head with polished rocker arms sourced from California Datsun Inc."

And blue combustion chambers.

https://bringatrailer.com/listing/1978-datsun-280z-117-2/

So the guy sold it on March 6. What happened? The buyer flake out?

He must've read about California Datsun then folded. Who in the hell paints a high temp combustion chamber? I wonder if the head is actually on a car or more for advertising flash BS?

7 hours ago, Racer X said:

So the guy sold it on March 6. What happened? The buyer flake out?

Looks that way.  It's described in the listing.  The guy had actually bid and paid for a different car in the past, a Porsche for $50,500.  Who knows, he might have got COVID-19.

"This is a re-list after the vehicle was previously sold on BaT in March 2022 and the winning bidder failed to follow through with their commitment to purchase. This was not due to any fault with the vehicle. The winner has been banned from future participation on BaT and their buyer’s fee was not refunded."

https://bringatrailer.com/member/rlife/

40 minutes ago, siteunseen said:

He must've read about California Datsun then folded. Who in the hell paints a high temp combustion chamber? I wonder if the head is actually on a car or more for advertising flash BS?

Looks like the picture is as it was de-boxed.  If you look at the coolant passages it looks pretty corroded.

Also interesting that if "polished" means the rocker arm pads, that that is different than reground.  I wonder how the wipe pattern looks.

I would bet that's Dykem blue layout dye on those chambers. Somebody is using that photo to fool an unfortunate not very mechanical desk jockey looking at bat.com.

 

 

 

 

Advertising switch and bait type thing.

Like I said "lipstick on a head".

 

I would be afraid, very afraid.

 

Having used dykem many times over the years, I can’t see any reason to completely coat the entire combustion chamber with it. 
 

Doesn’t make any sense.

I was just talking to an engine builder who was describing the benefits of ceramic coating the combustion chamber and piston tops.

6 hours ago, Racer X said:

Having used dykem many times over the years, I can’t see any reason to completely coat the entire combustion chamber with it. 
 

Doesn’t make any sense.

To cover flaws in chambers.

If you look at the list of things done before he calls it "rebuilt" you can see that it's not even up to the level of a remanufactured alternator.  He just cleans and polishes the parts, skims the head, and puts it back together with new seals, apparently.

The guy has been doing the same thing for many years.  He even has newer complaints on the various review sites.  I saw a few for late 2021.  But, he's got a good web page and knows how to promote.  Doesn't care about reputation, apparently, just making the sale.

From his N42 head web page, below.  The only new part is the valve seals.  The heads only have a 30 day warranty.  So, anyone who buys one better work fast.

"REBUILD PROCESS INCLUDES:

1. Complete disassembly, Inspection and Pressure test
2. Deck Re-Surfaced 
3. Reconditioned Polished Rocker Arms
4. Cleaned and Installed OEM stock Springs, Retainers and Lash Pads
5. Full Set of new Valve Seals
6. Stock Polished Camshaft. (Performance Cam Kits available, discount offered.  call for details)
7. All threads cleaned and repaired as needed
8. Full Reassembly and Valve Adjustment (Re-Adjustment Required Prior to start up)
9. 30-day warranty

Trust your Datsun to a professional licensed Datsun Restoration business with over 15 years experience."