Quote:
Originally Posted by GUTCH
Noob question, I know you guys love them.
What does "AR" mean (as in .64AR)?
Thanks in advance.
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In easy to understand language:
Area to Ratio. It is the size of the turbine housing (hot side). A smaller A\R will spool quicker, cap top end power depending on the engine flow characteristics, and if too small it can overboost\spike.
A larger A\R is the opposite.