Mazda Talk Forums

Brian, I have an '09 SCed NC2 with your catted street header/mid pipe and Mazdaspeed exhaust. In our current hot weather the coolant temperature is steady at 190F, reaching 210F in stop and go traffic. I have been interested in these hood louvres for a while now, especially since they now come powder coated. My car is a daily driver year round. Will these louvres allow too much rain or snow into the engine bay for a DD? The car is always parked underground and driven mainly on the weekends, as I walk to work. Thanks.

Well, first those temps are not bad at all. In fact, when Cosworth built my last 2.0 they said they want to see the motor ideally running 209F for water and 209F for oil. That's an ideal they admit never really happens, in reality usually a few over or under. So, I would not say you have temp issues in current config.

For autocross I had the issue of running the car hard and then coming to stop in the grid and my SC 2007 would then spike instantly over 220F and more with all that heat to get rid of and the car not moving. So it now has the Singular louvers and other upgrades and now sitting in grid that temp spike is gone. Have not had issue with rain, when car driven in the rain you get a ton of it through the front grille, the only interesting change is that some drops of water coming through the grille now exiting through the louvers. We don't get snow here so I cannot comment much on that.

Thanks for the good info, Brian. Much appreciated. I may just have to order the hood vents to make the car look meaner!

Singular Motorsports NC hood louvers, pictures courtesy of customer Tom Taylor.

Beautiful blue RX8 came in for hood louver install. Install performed by Rocky's Miatomotive.

NC hood vent finished install pics courtesy of customer Joe Richter

Hood louver install submitted by Luis A.