Killer SVTP Deal on Trackspec Motorsports Hood Vents

94 Cobra R

Same Ol Same Ol
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Ok, first experience in traffic with 92+ degree temps and high humidity (typical Florida summer day):

Before vents, coolant temps would eventually sit around 220. IAT1 would end up around 140 while IAT2 would sit around 120. This would not change even after finally moving. A/C on.

Post vents, coolant temp stayed between 195 and 205. IAT1 would go between 105-130 (IAT1 is really irrelevant but was interesting to see) and IAT2 would go between 95-120. A/C on.

Current setup: KB2.2 1st gen, JLT CAI, 50/50 coolant in both cooling and intercooler systems. OE intercooler pump. No idea on thermostat. Stewart water pump. Cool fan temps set to low fan on at 184, high on at 190. Killer chiller, no HE in the loop.

On the list for changes: 80/20 water/coolant mix (for both systems), 180 Termi-stat, Vari-max intercooler pump, remove Killer Chiller and rehook up the FLuidyne H/E.

On the list for the future: GT500 H/E with fans, increase diameter of IC inlets/outlets (all if needed after making the first round of changes)

So I’d say, just for the first short test, it’s already made a huge difference in cooling.


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Talleywacker

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I'm more interested in stabilizing the car over 165mph. I've started to track my cobra and will be doing the big bend open race. It will take me a few years to get to the unlimited class but I do plan on some mile events and such. I'd like to be able to cruise at 180+ without front end lift.

Does anyone know if this helps plant the front end at high end speeds?
 

94slowbra1

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I'll bite:
I'd say yes. How much I'm not sure. the first couple of events are below the hood lines so I dont know how much air is flowing over them to help pull and create negative pressure under the hood. You want as much air that is coming through the grill to go out so it doesn't build a "block" of air. These will help you but ideally you want to try and find a racebronco hood.
His hood has all the vents raised, the nose if it comes down a little further so more air goes above the car and there is a lip on the back to help divert air over the car.
Long story short, I believe these are the best out there that are readily available right now
 

UncleSAm

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I'll bite:
I'd say yes. How much I'm not sure. the first couple of events are below the hood lines so I dont know how much air is flowing over them to help pull and create negative pressure under the hood. You want as much air that is coming through the grill to go out so it doesn't build a "block" of air. These will help you but ideally you want to try and find a racebronco hood.
His hood has all the vents raised, the nose if it comes down a little further so more air goes above the car and there is a lip on the back to help divert air over the car.
Long story short, I believe these are the best out there that are readily available right now

Agreed with the race bronco hood, when I was talking to him years ago during the development. before Steve made his run of them, I believe he said he spent some time in a wind tunnel when designing his hood. So we know it works
 

94slowbra1

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not to derail off the original topic or question at hand, but yes Carlos put a ton of time and testing into his hood. so yes it does perform. thats the exact reason i bought one, stability on the big end.
 

racebronco2

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I did do a lot of track testing so I know it works open tracking and high speed events. I did not do any wind tunnel testing. Paul Brown of Tiger Racing told me he did wind tunnel testing and his similar hood did provide down force. At the time I was on my first design which only lowered the recessed portion 2 extra inches. I told him the I thought about cutting the recessed portion out more. His response was it would create more turbulence because the open area is below the air going over the hood. It would be better to add louvers from the front opening back. With that design each louver would create a high pressure at each vent pulling the low pressure out from the under the hood.

Some of you may remember when I went to the mile event. I asked if i could compete against the C6ZO6. I was told our cars were like bricks and I was on drugs if I think I could out mph C6ZO6's since they are top end monsters.

Most C6ZO6 did around 165 to 168mph.
3 of us went.
550rwhp whipple Terminator 161mph
480 rwhp Terminator my first design 162mph
Me at 520rwhp Terminator current design 172.xx

Was 1 mph behind a stock ZR1 and 4 mph slower than a modded ZR1
 

CobraBob

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Those are impressive mile event results. Well designed, well engineered, mod.
 

Wings65288

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You interested in selling them @jwcobra03 ?

Racebronco that's really awesome. Who created your hood? I tried Googling a picture of your hood, if you got a pic of it I'd love to see it
 

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