Ron, all, I guess, I didn't give enough information! This car has a
large air dam. It has no radiator in the engine bay for air to flow
through. Gas tank is in the grill area. Nothing but exhaust pipes,
turbo, headers, and lots of motor in the engine bay. All hemed in by
fender wells which I only put back in this year. This is NOT a street
car by any stretch of inagination. Right now I have zero air flow into
the engine compartment. Where the radiator used to be is a firewall
that keeps the fuel tank cool (I hope!). Those places where access to
the horns used to be are now filled in with plates to keep any heat and
fire from the fuel tank. So the engine room is pretty much sealed.
But I need some cooling air flow into the area. Hood louvers wont work
because there is nothing coming in to escape. Raising the rear of the
hood doesn't help for similar reasons. No air flow into the
compartment. So I was supposing that raising the front of the hood by
1/2 inch would let some boundary layer air flow into the front of the
engine compartment and downward across the headers and turbo plumbing
into the low pressure area (in this car) under the engine and chassis.
While there may be some lift from air flow across the hood there is also
a downward component from the lift and drag to hopefully hold it is place.
Does the question I asked make more sense now? Please try agian because
a lot of minds are better'n one for sure. Sorry for the confusion. I
have now been 186 mph for a mile average a month ago .... next 203.793
+ In Sept....
mayf
Ron Fraser wrote:
>Mayf
> The problem here as I see it is that few of us have any experience
>with Tigers at over 150 mph. What's stable at 120 mph could be frightening
>at 180 mph.
>
>I would think that a 1/2" opening at the front would either create lift or
>blow the hood right off.
>
>Have you tried lifting the back of the hood or put vents in the hood?
>
>Do you have an air dam just in front of the radiator to create negative
>pressure behind the radiator.
>I would think 3/8" to 1/2" dam width would be more than enough.
>
>Good Question, tough to answer.
>
>May the Speed Gods smile on you in your Quest.
>
>Ron Fraser
>
>
>
>
>
>-----Original Message-----
>From: tigers-bounces@autox.team.net [mailto:tigers-bounces@autox.team.net]
>On Behalf Of drmayf
>Sent: Thursday, September 10, 2009 8:44 PM
>To: tigers@autox.team.net
>Subject: [Tigers] An Air Flow Question for the Worlds Fastest
>SUnbeam(wannabe)
>
>
>Since I have boxed in the motor by putting in some fender wells, the
>motor house gets downright hot! I was thinking, usually dangerous to
>self and by standers alike, that I could make a couple of 1/2 inch thick
>spacers to go between the hood and the hinges. That would open the front
>of the hood a 1/2 inch and let ram air in to the motor house. ANd take
>some of that heat down and out. Anythoughts to this hair brained idea?
>The rear of the hood is held in place by three dzus buttons but the
>front is held in place soley by the hinges.
>
>Thoughts? COmments? Jeers? Barbs? I'll take them all if related to the
>issue...
>
>mayf
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