I couldn't tell you about how it effects the headers durability, I've only had it on there since April and haven't taken it off to look. I could do that, but I doubt I will, since it does take some time to get it right and it can be a bit of a pain in the ***. It's an RB header so it should be fine. I was also surprised at how much of a difference it made.

I'll be getting that heat shield to help out and installing a NACA duct to feed fresh air to the carb, so it's not sucking the warm under hood air. As well, I plan to add some louvers to the front of the hood, or should I say, have a shop do it, and put one or two NACA ducts in the header panel between the headlights to aid in getting fresh air to the rad, since my FMOC is blocking most of the stock opening.

 

where can you buy the NACA hood ducts. i lost my links that i had.

 

I like the NACA-duct look, but doubt that I'll go that route myself, being the stock-look wimp that I am.

I did a cold-air duct system, tapping a 4" tubing flange into the side of the radiator support below the overflow bottle, and then using 4" aluminum vent tubing to plumb it into the entry of the stock air cleaner (with the plastic horn removed.)

It works well enough, though I have no hard performance numbers for it.

I've considered adding a small forward-facing scoop to the intake end, behind the stock grille, to get a bit of a ram-air effect, but I don't know if that's such a hot idea, as low as it is.

It doesn't rain much here, but it does rain sometimes.

 

in a mazda race comp book that i have the pdf for that kinda what they tell you to do put a duct in front of the radi would mount it high up and you should have no problems. itsnot that big of deal if you suck in a little bit of water right? ie mist ect. you just dont want to drive into a puddle and have it sucking up all the water.

 

You can get the NACA ducts at www.mckinneycorp.com. They are carbon fibre, 2,3 and 4 inch widths, for about $35US. I'm going to swing by my parts shop and see if he has anything that I can use, if not I'll be getting them from Mckinney.

I think the engine can handle a little bit of water in the form of rain, since turbo guys use methanol/water injection to lower intake temps. Just as long as your not dumping water into it. The duct feeding air to my carb will be a few inches in front of the carb, so any water going in it probably won't get sucked in.

 

Leave it to Billy.... Ask for a hotdog, and he'll give you prime rib every time!

That looks pretty slick alright, and may have to go onto my wish list...


.

 

wee need to see if we can talk him in to making turbo manifolds and heat sheilds that go with them .

 

Here are some pictures of Rosie sporting the new Respeed Heat Shield. She looks good..... But then again, Rosie looks good in anything....