1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Rear Diffuser?

Thread Tools
 
Search this Thread
 
Old Feb 10, 2015 | 09:49 AM
  #1  
jayjak's Avatar
Thread Starter
Full Member
 
Joined: Sep 2012
Posts: 46
Likes: 0
From: Seattle
Question Rear Diffuser?

Does any one know of a company making Rear Diffusers for Fb's?

Looking for something similar to : http://photo.qip.ru/photo/overlord82.../179142280.jpg

Or even one for a different car that may fit with slight modifications?

Looking to beef up the look of the rear end but havent been able to find a bumper cover to my liking.

Thanks
Reply
Old Feb 10, 2015 | 10:51 AM
  #2  
user 8202's Avatar
Banned. I got OWNED!!!
 
Joined: May 2007
Posts: 134
Likes: 0
Hope to find a company myself. Seems most body mods have to be custom made for 1st gens
Reply
Old Feb 10, 2015 | 03:40 PM
  #3  
DreamInRotary's Avatar
Always Wanting to Learn
Tenured Member 05 Years
iTrader: (49)
 
Joined: Aug 2011
Posts: 3,078
Likes: 42
From: Cambridge, Minnesota
I'm planning on making rear diffusers for our FB's in the near future. There's a huge hole in the market there that no one has filled yet. It'll mount to the bottom side of the stock fender quarters and maybe the rear fender skirt as well - have yet to design and test mount my idea yet. It'll be a while before I actually make a mold and start making some though.
Reply
Old Mar 17, 2017 | 06:18 PM
  #4  
Waggers the Crazy Car Lady's Avatar
Can Post Only in New Member Section
 
Joined: Feb 2017
Posts: 3
Likes: 0
From: Spokane, WA
I was curious if you ever ended up designing and test mounting your idea, DreamInRotary? I have an FB road racing car that I have been looking at doing something like this for.
Reply
Old Mar 20, 2017 | 05:55 AM
  #5  
Sh00bs's Avatar
Doritos & Dual Sports
Tenured Member: 10 Years
Liked
iTrader: (8)
 
Joined: Jun 2013
Posts: 1,082
Likes: 16
From: Pasadena, MD
hello !

i have one it's sagging a little bit in the middle still (ive since made it sag less with a center mount but this is the only pic i have of it ATM)
the gas tank is in a bad spot for us folks wanting one lol
Attached Thumbnails Rear Diffuser?-diffuser.jpg  
Reply
Old Mar 20, 2017 | 07:44 AM
  #6  
t_g_farrell's Avatar
Waffles - hmmm good
Tenured Member: 20 Years
Community Favorite
iTrader: (1)
 
Joined: Jul 2004
Posts: 9,250
Likes: 464
From: Lake Wylie, N.C.
A diffuser alone doesn't buy you much unless you have the air handling up front and
under the car done correctly as well. Also, unless you are going ~100 mph or over, none of this
really has an effect on the handling of the car, except to add weight. So I don't understand the
need for this from a performance perspective.
Reply
Old Mar 20, 2017 | 03:46 PM
  #7  
RGHTBrainDesign's Avatar
Banned. I got OWNED!!!
 
Joined: Aug 2012
Posts: 1,666
Likes: 88
From: San Jose, CA
Originally Posted by t_g_farrell
A diffuser alone doesn't buy you much unless you have the air handling up front and
under the car done correctly as well. Also, unless you are going ~100 mph or over, none of this
really has an effect on the handling of the car, except to add weight. So I don't understand the
need for this from a performance perspective.
Noticeable differences with a smooth underbody and diffuser on my daily driver, and highway MPG dives dramatically if I open up the front. So I'd say 50mph+ and you notice a difference.

Who isn't driving their car over 100mph?
Reply
Old Mar 21, 2017 | 04:58 PM
  #8  
elwood's Avatar
Rotary Freak
Tenured Member: 20 Years
iTrader: (1)
 
Joined: Mar 2003
Posts: 1,588
Likes: 46
From: Michigan
Originally Posted by Sh00bs
hello !

i have one it's sagging a little bit in the middle still (ive since made it sag less with a center mount but this is the only pic i have of it ATM)
the gas tank is in a bad spot for us folks wanting one lol
Crazy exhaust tip placement. Pics of the inside routing, please.
Reply
Old Mar 21, 2017 | 06:31 PM
  #9  
Qingdao's Avatar
HeyHeyHey..Its the Goose
Tenured Member: 10 Years
Liked
Loved
Community Favorite
iTrader: (3)
 
Joined: Apr 2012
Posts: 3,055
Likes: 214
From: Charleston
Smooth underbody is key here. FB's don't have a smooth underbody, and we kinda can't with the solid rear axle, fuel tank, and drive shaft/trans tunnel.

If the bottom of the car was smooth and able to flow air sure why not, but its not smooth and able to flow air so why bother?

Making a rear diffuser on an FB cosmetic equipment that is race inspired.

Last edited by Qingdao; Mar 21, 2017 at 06:33 PM.
Reply
Old Mar 22, 2017 | 08:20 AM
  #10  
kutukutu1's Avatar
Rotary Enthusiast
Tenured Member: 15 Years
Liked
iTrader: (5)
 
Joined: Jan 2008
Posts: 1,300
Likes: 60
From: Southfield, MI
I would love to see that inside routed exhaust. Looks crazy awesome.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
imitek
3rd Generation Specific (1993-2002)
9
Aug 28, 2015 05:28 PM
MILOS7
3rd Generation Specific (1993-2002)
10
Aug 19, 2015 07:25 AM




All times are GMT -5. The time now is 01:01 PM.