22-04-2023, 08:35 AM
(22-04-2023, 08:03 AM)Mike Watterson Wrote: I was referring to Jeffery, oddly I didn't see your post, Trevor. I'd not use a NOS but go by the datasheet ratings, and/or look at later AVO test settings. There was a lot of variation and a NOS part could be 60 years old. You'd not know how good it was then, nor how much it's deteriorated.
Hi Michael.
The reason I'd use NOS is as you rightly state even a NOS valve will have deteriorated, let alone a used valve or pull, we need a benchmark to base our tests on and to find a good old valve will be hard, it's less likely that we'll find any old valve at 100% emission, I've bought many alleged 100% valves over the years and none are at that figure.
