Notices
Exterior & Interior 350Z Body modification, interior styling and lighting

build full under tray and diffuser

Old 04-11-2015, 04:19 PM
  #101  
terrasmak
Super Moderator
MY350Z.COM
iTrader: (8)
 
terrasmak's Avatar
 
Join Date: Jan 2007
Location: Sin City
Posts: 25,597
Received 1,142 Likes on 830 Posts
Default

I would love to know the track results with this
terrasmak is offline  
Old 04-12-2015, 12:28 AM
  #102  
350z-900whp
Registered User
Thread Starter
iTrader: (2)
 
350z-900whp's Avatar
 
Join Date: Jan 2006
Location: Kuwait city
Posts: 736
Likes: 0
Received 19 Likes on 15 Posts
Default

Unfortunately it's going to be hard , where I live we don't have tracks here. But, maybe this winter I be able to track it in (Bahrain track) . I live in Middle East by the way.

Driving under normal conditions what I can see the water temp increased by ( 5 c ) my car is turbo charged with stock hood. Definitely need after market hood with this setup.

last time I drove the car was a year ago maybe more than that. Any way built this diffuser for top speed purpose, hopefully it will yield the result I'm after and make the car more stable in high speed.

On my 295 km run the back of the car felt realy light I had to let go, scary!! ( stock aero)

After I had finished my diffuser had 2 crack manifold and a bad clutch

Now looking to but the car back to gather and head back to see result of the diffuser. Good or bad 😁
350z-900whp is offline  
Old 04-22-2015, 09:50 PM
  #103  
350z-900whp
Registered User
Thread Starter
iTrader: (2)
 
350z-900whp's Avatar
 
Join Date: Jan 2006
Location: Kuwait city
Posts: 736
Likes: 0
Received 19 Likes on 15 Posts
Default

350z-900whp is offline  
Old 04-22-2015, 09:59 PM
  #104  
terrasmak
Super Moderator
MY350Z.COM
iTrader: (8)
 
terrasmak's Avatar
 
Join Date: Jan 2007
Location: Sin City
Posts: 25,597
Received 1,142 Likes on 830 Posts
Default

It's pretty flat , no ridges , kinda scary.


A flat bottom turns into a lifting body at not much AOA with high airspeed. Look a the recent GTR crash.
terrasmak is offline  
Old 04-23-2015, 03:54 AM
  #105  
350z-900whp
Registered User
Thread Starter
iTrader: (2)
 
350z-900whp's Avatar
 
Join Date: Jan 2006
Location: Kuwait city
Posts: 736
Likes: 0
Received 19 Likes on 15 Posts
Default

That how I mount it ( example of few mounts ) it's a built on or sort of hhh

Do you have a link of it ?

To be honest when I mount it on the car it will be concave from the front and back C shape mabe 15 or less degree up front and 37 in back

I know the back I way off but so it can be street able setup from what I read (7 to 12) degree is the ideal setup











350z-900whp is offline  
Old 04-23-2015, 07:31 PM
  #106  
3hree5ive0ero
`.,,.*`.,,.*~[;::;]ᵒᴥᵒ)
iTrader: (95)
 
3hree5ive0ero's Avatar
 
Join Date: Dec 2000
Location: Dallas / Chicago
Posts: 1,337,017,830
Received 75 Likes on 48 Posts
Default

Very interesting. Keep us updated!
3hree5ive0ero is offline  
Old 04-29-2015, 03:11 PM
  #107  
Zazz93
Registered User
iTrader: (2)
 
Zazz93's Avatar
 
Join Date: Jul 2009
Location: So Cal
Posts: 1,768
Received 7 Likes on 5 Posts
Default

Just remember when you're setting this up, you must vent the air coming in through the bumper. Your temps are likely raising because you've effectively trapped more air than previously. Venting the radiator and brake duct air can get tricky with custom work like this. I think the quickest and easiest venting system would be a vented hood (similar to that of a NSX).


Another place you'll likely want to vent is the diff. On the track you'll likely see dangerous diff temps and it will likely start to vent fluid out. Under normal circumstances, it will generate quite a bit of heat on track and now that it is enclosed you can expect that to increase as well.


I was considering doing something similar but planned to use multiple small panels to ease maintenance and installation, as well as strengthen the over design. Also, I figured the small segments would allow for simpler development around problems when I found them.


Unfortunately the Z doesn't readily accept a functional rear diffuser (with the stock exhaust system setup). It just poses too many obstructions. So if you want to optimize it you likely want to play around in that area.


Another place to consider for venting, aside from underhood air is the fender's airflow. But that's a whole other can of worms.


Good luck.
Zazz93 is offline  
Old 06-25-2017, 10:53 PM
  #108  
Swaglife81
Registered User
 
Join Date: Oct 2016
Location: Chattanooga, TN
Posts: 163
Likes: 0
Received 7 Likes on 7 Posts
Default

I had to revive this thread. Actually learned some good stuff in this thread with some counter research in between.

I'm curious about the to flat of a underbody part. With people saying it could produce life. Someone said it needed a bump in it or something like that. If anyone knows. I understand the diffuser science of it and the front and rear rake will have a better effect.

I wanted to make a front splitter/under body for the front and some type of side skirt splitter without anything extreme. Mainly to keep engine clean and some for aesthetic reasons.

The front canards you see people add to front bumpers. The L shaped sloped things on the sides of the front bumper. Are these functional or aesthetic too?
Swaglife81 is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
350Z_Al
Exterior & Interior
131
08-29-2017 05:01 PM
MM'08_350Z
VQ35HR
224
08-10-2017 12:55 PM
_bit
New Owners
5
10-02-2015 07:49 AM


Thread Tools
Search this Thread
Quick Reply: build full under tray and diffuser


Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: