since NASCAR has the one-engine rule and common sence is telling me that they dont practice, qualify, practice, do the 150's and all the practice with the same engine. or do they?
when do they change engines and what engine do they have to start the race with?
do they change the engines after every event?How does the one engine rule apply for speedweeks?The one engine rule does not apply to Speedweeks. They use two engines. This first engine must be used from the first practice until after the 150's. Then a second engine must be put before final practice on Saturday and used for the 500 on Sunday. They have to install it before final practice on Saturday to make sure that there are no leaks or problems. Nascar doesn't want a untested fresh engine to have a leak or blow up and cause the big one on lap 2.How does the one engine rule apply for speedweeks?that's a good question, i've always wondered about that myself. yeah, with practice and qualifying last weekend, then practice today, a 150 mile race tommorrow, and practice friday and saturday, that would be way too many miles on the engine before race day. so they must do something different for this race than they do for the rest of the season.How does the one engine rule apply for speedweeks?I think some of them will blow their motors up on purpose and get a new motor and just start in the back
