Re: Engine sealing
 

Thanks for the responses, that's the sort of the info I was looking for.

I would have thought in this day and age there would have been something a little more high tech. I was picturing an adhesive backed metal label that would go across the surface where two things met, such as a head to a block. Like the chassis certification style of label. Where you would have to visibly leave a cut mark or remove the label if you had taken it apart.

Re: Engine sealing
 

The wire and lead seal works OK but you can wiggle the wire around a little and work one side out and then just slide it back in after you change what ever you need to.

Re: Engine sealing
 

NHRA typicall seals an engine or component (like the carb or valve cover) so you can continue racing and once you are out of the elimination (because you lost), then they will go for the tear down. It could be because you ran under the record or just because it's your turn for random selecting. You can set a record every weekend and will get a tear down every weekend at the discretion of NHRA.