Rocker arm identification

[JagoBlitz]

Hello,

i disassembled my L28 cylinder head yesterday and I was wondering why my rocker arms are not all marked the same.
Are these original Nissan rocker arms or were they already replaced by a previous owner?
Thank you for your help.

JagoBlitz

[Zed Head]

I think that those are just mold/casting numbers.  Same part design, same factory, just different forming stations.  They're all collected together then sent off to another manufacturing station for the pad attachment and final machining.

[siteunseen]

Some old dusty books I found in my library...

I can't find the different numbers but they're the same. Seems like I have some S numbers and some E numbers?

Send them to Delta for resurfacing for sure. Great job at a good price.

[JagoBlitz]

2 hours ago, JagoBlitz said:

 

 

Another 280Z owner told me that his rocker arms and all rocker arms he ordered from Nissan had this parallelogram on them.

[Zed Head]

Here's an old post from another forum (it's me).

https://forums.hybridz.org/topic/119576-rocker-arms-state-of-the-situation/