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

Proper Fuel Line Routing With NOS and Carb

Thread Tools
 
Search this Thread
 
Old 04-02-15, 01:47 PM
  #1  
Full Member
Thread Starter
iTrader: (1)
 
CMFCRX7's Avatar
 
Join Date: Jan 2014
Location: Chicago
Posts: 71
Likes: 0
Received 0 Likes on 0 Posts
Proper Fuel Line Routing With NOS and Carb

Hello, I'm working with an 85 12A GSL. It has a Mikuni 44 Carb, a Wet shot NOS system tapped into all 4 ports and a Holley Red electric fuel pump and regulator. I would like to know the proper way to run the fuel lines in this car for the best results. Currently it comes in from the tank to the pump and then up to the engine bay in an enlarged fuel line, probably double the size of the stock line. Then it goes into a distribution block in the engine bay. This block feeds a fuel pressure gauge, the NOS system and the carb. It goes off this block into a T fitting on the carb, the other end goes to the stock fuel line. (So I'm guessing the carb is getting fed in two places.). Without a FPR the distribution block gets about 3.5-4 PSI on idle. Is this setup ideal? What is a better way to run this with the nos? Where should install my FPR that the previous owner did not run? Also should my pressure be so low? Thanks for the help
Old 04-02-15, 01:50 PM
  #2  
Full Member
Thread Starter
iTrader: (1)
 
CMFCRX7's Avatar
 
Join Date: Jan 2014
Location: Chicago
Posts: 71
Likes: 0
Received 0 Likes on 0 Posts
For reference:
Attached Thumbnails Proper Fuel Line Routing With NOS and Carb-img_20150325_163232%7E2.jpg  
Old 04-02-15, 02:11 PM
  #3  
RX for fun

iTrader: (13)
 
Siraniko's Avatar
 
Join Date: Aug 2001
Location: Socal
Posts: 15,926
Likes: 0
Received 22 Likes on 19 Posts
I would run a separate pump for NOS
Old 04-02-15, 02:40 PM
  #4  
Full Member
Thread Starter
iTrader: (1)
 
CMFCRX7's Avatar
 
Join Date: Jan 2014
Location: Chicago
Posts: 71
Likes: 0
Received 0 Likes on 0 Posts
Does the rest seem okay?
Old 04-02-15, 03:36 PM
  #5  
heynoman

iTrader: (5)
 
heynoman's Avatar
 
Join Date: Jul 2009
Location: Illinois
Posts: 468
Likes: 0
Received 1 Like on 1 Post
Originally Posted by CMFCRX7
Does the rest seem okay?
I agree with siraniko you should run 2 fuel pumps since bolt system operate at a different pressure.
I recommend moving the foggers further up to allow for better atomization .
Old 04-03-15, 10:20 AM
  #6  
Full Member
Thread Starter
iTrader: (1)
 
CMFCRX7's Avatar
 
Join Date: Jan 2014
Location: Chicago
Posts: 71
Likes: 0
Received 0 Likes on 0 Posts
What punp should I get for the NOS? Do I was something higher pressure like a holley blue?
Old 04-03-15, 11:30 AM
  #7  
heynoman

iTrader: (5)
 
heynoman's Avatar
 
Join Date: Jul 2009
Location: Illinois
Posts: 468
Likes: 0
Received 1 Like on 1 Post
Originally Posted by CMFCRX7
What punp should I get for the NOS? Do I was something higher pressure like a holley blue?

You can use the Holley blue I would also recommend a wideband af meter so that you can monitor you mixture.
Old 04-03-15, 12:41 PM
  #8  
Full Member
Thread Starter
iTrader: (1)
 
CMFCRX7's Avatar
 
Join Date: Jan 2014
Location: Chicago
Posts: 71
Likes: 0
Received 0 Likes on 0 Posts
The car has an Innovate MTX-L already installed for carb tuning.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM
Rotospectre
New Member RX-7 Technical
3
03-28-18 03:33 PM
sYnth.
Build Threads
0
08-19-15 06:27 PM
Blk 93
3rd Generation Specific (1993-2002)
4
08-19-15 03:47 AM



Quick Reply: Proper Fuel Line Routing With NOS and Carb



All times are GMT -5. The time now is 04:40 PM.