Mazda Talk Forums

WE have looked at vented hood. But, what to do about fact it allows rain to pour down on top of the motor? The only way I see to avoid that is to move vents forward of the engine....at which point I am not sure we accomplish much.

Alex wrote:

Gordy wrote:

George wrote:A vented hood would be excellent.

I second this motion, particularly some louvers over the exhaust manifold.

That would be pretty awesome, but I'm only selling pieces that I had a mold made of.

Grey_nc: Are those for an NC for a different body style Mx5?
If you are seriously interested I can make you a deal for being the first to buy the hood and fenders. It's still expensive compared to the prices you posted but it's the best I can do.

They were for an NC and are vented as well close to the front cowl/windshield. Anyways, I am very interested! Shoot me an e-mail and we'll go from there. Thanks

ho_wang88@hotmail.com

Venting forwars of the engine is probably not all that bad.
There is a high pressure area in front of the screen/behind the engine that needs to be avoided for proper venting

Brian,

vents forward of the engine would be very effective. Pulling air through the radiator is gonna be awesome. Regardless, a little water proofing is painless, and there's not too much under there that can't take a splash of water. Experience talking here... I've had my hood louvered for three years or so. Zero problems.

I don't know if you're running an external oil cooler, but you may want to very strongly consider it. I have the Cosworth "Oil cooler" and my oil temps will hit 260+ degrees after a single 60 second AutoX run. I am using German Castrol 0W-30. Anything to improve air flow through the radiator will be a huge help.

I will likely do a vented hood soon on mine (currently doing it on NCLIGHT).

Picture of our 2007 in current form with our carbon doors. I was shocked to find that my factory doors with NO GLASS in them (took out the glass for weight savings long ago) still weighed over 42 pounds each! Our carbon doors fully trimmed with mirrors and latches and threaded inserts so they attach to factory hinges are just 11 pounds each. Thus, I put them on for autocross days to save 60 pounds! But I put the factory doors on for daily driving to have side impact protection.

Got autocross on Sunday!

George wrote:Brian,

vents forward of the engine would be very effective. Pulling air through the radiator is gonna be awesome. Regardless, a little water proofing is painless, and there's not too much under there that can't take a splash of water. Experience talking here... I've had my hood louvered for three years or so. Zero problems.

I don't know if you're running an external oil cooler, but you may want to very strongly consider it. I have the Cosworth "Oil cooler" and my oil temps will hit 260+ degrees after a single 60 second AutoX run. I am using German Castrol 0W-30. Anything to improve air flow through the radiator will be a huge help.

Hi George,

Not getting similar oil temp spikes with our supercharged 2007. Part of that difference is that your turbo is MUCH more efficient oil heater. And, despite having just the water/oil unit for cooling oil in the Supercharged 2007...my car does have substantially upgraded radiator such that my water temps while moving at speed are better/cooler than normal.

In NCLIGHT we have a monster 1.5 liter oil cooler.....and soon a serious diffuser hood.

I'd love to see this neat stuff trickling down my way...