C6 Z06 with ZR1 Hood no plexi aero questions
11-28-2011, 01:36 AM
#1
Racer
Thread Starter
C6 Z06 with ZR1 Hood no plexi aero questions
I have a 06 C6 Z06 with a carbon fiber factory ZR1 hood. I have not installed the plexi panel and want to use the hood at the track to relieve pressure and heat from under the hood. So my question is will a ZR1 hood with no glass in it provide increased cooling and down force.
11-29-2011, 10:06 AM
#4
Burning Brakes
BTW how much less does that ZR1 hood weigh versus the Z06 hood?
11-29-2011, 02:25 PM
#5
Race Director
it's a bit far rearward to be optimum, but if you put a small lip in the front, it might work out. Take a look at my "recession aero" thread for my modified OEM hood (cheap craigslist find).
Obviously you don't want to ram more air in than you draw out, so I think a raised lip in the front is vital, AND you don't want to get so close to the cowl that you are drawing high pressure air backward into the engine bay
Obviously you don't want to ram more air in than you draw out, so I think a raised lip in the front is vital, AND you don't want to get so close to the cowl that you are drawing high pressure air backward into the engine bay
11-29-2011, 06:11 PM
#6
Team Owner
it's a bit far rearward to be optimum, but if you put a small lip in the front, it might work out. Take a look at my "recession aero" thread for my modified OEM hood (cheap craigslist find).
Obviously you don't want to ram more air in than you draw out, so I think a raised lip in the front is vital, AND you don't want to get so close to the cowl that you are drawing high pressure air backward into the engine bay
Obviously you don't want to ram more air in than you draw out, so I think a raised lip in the front is vital, AND you don't want to get so close to the cowl that you are drawing high pressure air backward into the engine bay
Lip is required look at my hood in sig pics
11-30-2011, 12:29 AM
#7
Racer
Thread Starter
11-30-2011, 09:26 PM
#8
Racer
Thread Starter
I checked out the pics but when you say small lip what did you have in mind quarter of an inch or what?
I have a gauge that measures inch pounds of pressure and was thinking of doing some before and after measurements under the hood to see if I can measure a difference. To give you an idea how sensitive it is I use it to tweak my ram air system and I show pressure at 5 MPH with it. Any thoughts on this?
I noticed all extractor hoods have multiple louvers that sit down below the level of the hood not a lip sticking up. So a bit confused about the proper design.
R
I have a gauge that measures inch pounds of pressure and was thinking of doing some before and after measurements under the hood to see if I can measure a difference. To give you an idea how sensitive it is I use it to tweak my ram air system and I show pressure at 5 MPH with it. Any thoughts on this?
I noticed all extractor hoods have multiple louvers that sit down below the level of the hood not a lip sticking up. So a bit confused about the proper design.
R
11-30-2011, 11:10 PM
#9
Race Director
you can do louvers, but you get lots of small openings. Look at a factory C6R hood...one large opening extracts more air than a bunch of small ones if you can get all of the air to travel in the right direction.
I don't know how much of a lip, but I think you would want the lip (front of the hole) higher than the back of the hole.
I don't know how much of a lip, but I think you would want the lip (front of the hole) higher than the back of the hole.
12-03-2011, 04:10 PM
#10
Former Vendor
you can do louvers, but you get lots of small openings. Look at a factory C6R hood...one large opening extracts more air than a bunch of small ones if you can get all of the air to travel in the right direction.
I don't know how much of a lip, but I think you would want the lip (front of the hole) higher than the back of the hole.
I don't know how much of a lip, but I think you would want the lip (front of the hole) higher than the back of the hole.
Louvers by design create almost a suction force and draw the air out, in the event you do not have it sealed to something you want to pull the air from.
