Let me take a stab at a couple items you've mentioned.
First, the front spoiler section.
It's talking about what we can do when we add a spoiler. It dictates what space the spoiler can occupy in three dimensions. It says that it cannot cover up any original opening. It also allows the spoiler to have holes and ducting to a couple things.
Any ducting allowed by this rule alone would have to be contained within the spoiler.
It also says we can cut a 3" hole in the front valance for the purpose of ducting air to the brakes. All this allows is for two non-original holes to be cut. Assumably this is in the spoiler section because a front valance is in the exact same area as the spoiler is allowed to be.
Things this rule alone does not allow:
Brake ducts
Radiator ducts
There is a separate brake duct rule in the brake section. There it says we can add brake ducts. It doesn't say how many or where they have to be, but it does say no new openings may be made. (2001 ITCS, 17.1.4.D.6.
So we know brake ducts are ok.
As for radiator ducts. We know radiators and radiator fans (and hence fan shrouds) are open. This is where the attached idea comes in. If any ducting is part of the new radiator, fan assembly, or spoiler, it's specifically allowed.
So radiator ducts are ok, if a reasonable person would view them as part of the new radiator/fan, or spoiler.
A reasonable interpretation?
[Slightly trimmed QUOTE]Originally posted by ddewhurst:
Now lets have a possitive disscussion about ducting to the radiator. I have read in previous posts about the ducting to radiator opinions of people including Tech Inspectors.
2001 ITCS, 17.1.4.D.8.b says we can have holes/openings in the spoiler/airdam/valance & up to a 3 inch duct leading to each front brake.
This rule says I can do the above but did not state how & what I could secure the duct to. The rule also did not state if the duct could or should be directed to the center of the rotor or to the outer edge or the rotor.
With this information I installed my brake ducts & did not concern myself as to what or where I secured the brake air duct or the metal Mazda brake duct that directs air to the center of the rotor. Now if a Tech Inspector, competitor or some other person questioned/stated that the methods used on my car to secure the brake duct did not meet rules specifications I would very politely & with a smile on my face ask the person to show the rule in the GCR/ITCS that states in writting where a rule specification was not followed.
Did some of you folks approach brake duct completion via the same process or did you call SCCA headquaters & ask exactly what, where & how to complete your brake ducts ???
The same rule that specifies that you can have brake ducts specifies that you can have a radiator duct. The radiator duct will be a material/air passage with a very different non specified physical size/shape than your brake duct so my question is. Why wouldn't you approach the securing process for the radiator duct the same as the process you used for securing the brake duct ??? Presuming you didn't ask SCCA headquaters how to secure your brake ducts.
Again with the radiator duct that I installed I would ask the objecting person to please show the rule in the GCR/ITCS that states in writting where a rule specification was not followed.[/QUOTE]