LOL.....That's just plain crazy to think a plate can mandate that it is a NEW/DIFFERENT engine. The engine is built upon the same specs with or without the plate.
When we have folks running multiple classes, they have the engines/carbs/heads marked with paint. Matter of fact, we generally mark everything anyways to prevent changes from being made with out notification and/or consent of tech. Once they finish one class they come across the scale to pass the weight check and are sent on their way so they can get ready for the next class. They do so with the understanding that once the checkered flag falls on their last race they come back to tech and the ensuing tech will be for ALL classes they may have placed in a paying position.
Tom, I don't feel comfortable posting the actual excerpt from the tech manual ... If you have access to a WKA Tech Manual you can read the rule in its entirety ... the section is only two sentences in length ..... to paraphrase, as other have stated, ..."chunked in one .. chunked in all"
Entry fees were paid for two classes. Race one, claimed, deemed illegal. Dq'd. Race two not claimed, legal. Is what my left brain is telling me. My right brain is saying you dont have to get claimed to be teched. Both sides together came up with once race one is over and they allowed racer x to run race 2 you cannot deem race one out of tech.
If no rule is in place its the tech mans call, the promoter/track owner sticks to that call and thats it. Which should have been covered in drivers meeting.
Is the following a possible reason for it to have happened the way you expressed?
The track pays the tech person and if the track doesn't back up the tech person they will have problems. The tech person being paid is most likely going to get additional pay from the protest for his time. From the scenario it appears to me, only a quick check was the norm unless there was a protest. The tech person decided there only being paid extra to tech one engine, so there only going to pass judgement on one engine. The track backs them up.
I thought this was all hypothetical. Just move on, that's racing and stuff happens. Makes for a good story on down the road... that's bout all...