Venting the Bonnet - A Unique Design

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Nov 20, 2007 | 09:40 PM
  #76  
Awesome job mang! Thanks for taking the time to bring us along on this project. The pictures & descriptions are great. I'm really looking forward to seeing your final product.
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Nov 21, 2007 | 05:41 AM
  #77  
Nice job all around - especially in getting the 3M rep involved...

Yeah, gotta be the only good part of the TR7, there...
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Nov 21, 2007 | 05:51 AM
  #78  
gnat, I am all but convinced you are either made of money, sold your first born, or have a past you are not willing to share - interpol might be watching.

Nice work though. Don't rush the job just to get pictures of the finished product to us.
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Nov 21, 2007 | 06:22 AM
  #79  
Quote: gnat, I am all but convinced you are either made of money, sold your first born, or have a past you are not willing to share - interpol might be watching.
Probably all of the above but you left out one seriously hooked Mini MODder .

At some point he will likely be carted off but until they drag him away - lets all enjoy the journey he is sharing.

Love ya gnat
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Nov 21, 2007 | 11:11 AM
  #80  
gnat,
thanks for the detailed information. I just might want to do this to my mini one day.

Keep up the good work.
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Nov 23, 2007 | 04:32 PM
  #81  
Oh Ah Wee...Paint on the other side too



For those worried these louvers were too flat...note how it does follow the contours.







Just think how much cooling we'd get with this iteration

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Nov 23, 2007 | 04:53 PM
  #82  
Hubba Hubba.

Best looking TR7 bonnet ever...

I'm lovin it.
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Nov 23, 2007 | 06:23 PM
  #83  
DROOOOOL
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Nov 23, 2007 | 06:29 PM
  #84  
Can't wait to see it installed.
Louvers look great -- but so does the scoop.
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Nov 23, 2007 | 06:45 PM
  #85  
WOW, looks great, I look forward to seeing the MINI after you have it all back together.
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Nov 23, 2007 | 07:09 PM
  #86  
Quote: DROOOOOL
+1 - my thoughts exactly.
Beautiful work, gnatster!!
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Nov 23, 2007 | 07:19 PM
  #87  
Looks great Nate!
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Nov 23, 2007 | 07:24 PM
  #88  
Wow gnat!

Really really nice. I love the look of the smoothed and blended scoop.

My hood needs a face lift do to chips and now you have on a mission to make my own similar to yours. I will do the vents a little different.

Hope you don't mind.

Longboard
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Nov 23, 2007 | 07:32 PM
  #89  
Mind??? No way...

Go for it...glad I could inspire people...

I'm looking forward to see what others come up with now.

Oh wait...Bryan you need to send me an RMW Adjustable Cam Gear as "payment" for inspiring you
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Nov 23, 2007 | 10:54 PM
  #90  
Simply stunning.

Talk about being inspired, would anyone want to try this having the driver's side vents going the opposite direction to give cold air to the intake? Some changes would need to be made, but could it work?
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Nov 24, 2007 | 07:21 AM
  #91  
I haven't done any aerodynamic testing....

OK..for it to pull air in the louvers would need to stick up into the airflow. At least thats what I'm thinking...
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Nov 24, 2007 | 08:06 AM
  #92  
that hood looks awesome
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Nov 24, 2007 | 02:13 PM
  #93  
Quote: I haven't done any aerodynamic testing....

OK..for it to pull air in the louvers would need to stick up into the airflow. At least thats what I'm thinking...
Aero testing? Have you learned nothing here at NAM

You gotta make HP/TQ gain claims of course those things did come off of a TR7 so perhaps you lost a few ponies putting those on .

Your gonna have to do the string test - tie some 1"-2" strings and then go out on the highway.
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Nov 24, 2007 | 02:19 PM
  #94  
Quote: Aero testing? Have you learned nothing here at NAM

You gotta make HP/TQ gain claims of course those things did come off of a TR7 so perhaps you lost a few ponies putting those on .

Your gonna have to do the string test - tie some 1"-2" strings and then go out on the highway.
Probably hurt reliability as well...and we all know they will rust out in about a year.

I'm not selling them so I don't need to make unfounded claims.

Besides, the main goal was bling and to do them better then Sid.
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Nov 24, 2007 | 02:20 PM
  #95  
Quote: Talk about being inspired, would anyone want to try this having the driver's side vents going the opposite direction to give cold air to the intake? Some changes would need to be made, but could it work?
Based on some of the other airflow analysis threads scattered around NAM, it seems as though that area over the bonnet is a low pressure area (Bernoulli's Principle and all). Thus, it ought to work great for gnat's design purposes. Would probably not work so good for pulling air in.
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Nov 24, 2007 | 02:30 PM
  #96  
^+1

There's a high-pressure area at the base of the windscreen, but the entire top surface of the bonnet forward of that is pretty much a low-pressure area. That's not to say that you can't have a flush-mounted duct on the flat portion of the bonnet that will draw air into the underhood area - it just has to be designed significantly differently (like a NACA duct).

Here's a NACA duct (the little duct amongst the "Mercedes" lettering, NOT the big honking thing with the metal-mesh screen):
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Nov 24, 2007 | 02:37 PM
  #97  
Gnatster

Very nice and the hood scoop looks the way it should from factory.
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Nov 24, 2007 | 07:45 PM
  #98  
Quote: Based on some of the other airflow analysis threads scattered around NAM, it seems as though that area over the bonnet is a low pressure area (Bernoulli's Principle and all). Thus, it ought to work great for gnat's design purposes. Would probably not work so good for pulling air in.

Quote: ^+1

There's a high-pressure area at the base of the windscreen, but the entire top surface of the bonnet forward of that is pretty much a low-pressure area. That's not to say that you can't have a flush-mounted duct on the flat portion of the bonnet that will draw air into the underhood area - it just has to be designed significantly differently (like a NACA duct).
Good to know. It was just an idea.
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Nov 24, 2007 | 08:04 PM
  #99  
Quote: Good to know. It was just an idea.
Hey, go for it - NACA ducts on cars are cool!







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Nov 24, 2007 | 08:15 PM
  #100  
Nate, I am making fun of you.
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