Notices
Evo General Discuss any generalized technical Evo related topics that may not fit into the other forums. Please do not post tech and rumor threads here.
Sponsored by: RavSpec - JDM Wheels Central

ok Air to Fuel... eh?

Thread Tools
 
Search this Thread
 
Old Oct 24, 2005 | 11:15 PM
  #1  
Rcebowl's Avatar
Thread Starter
Evolved Member
iTrader: (3)
 
Joined: Apr 2005
Posts: 747
Likes: 0
From: Tulsa, OK
ok Air to Fuel... eh?

Everyone says Air:Fuel ratio, but is it technically a Fuel:Air ratio?
Because if it was Air:Fuel, then 10:1 (it's 10 parts air to 1 part fuel) would be leaner than say 9:1 (it's 9 parts air to 1 part fuel)
However, I was under the impression that the higher the first number, the richer the mixture (IE: 11:1 is richer than 10:1). But if that is true, then shouldn't it technically be Fuel:Air ratio?
Reply
Old Oct 24, 2005 | 11:17 PM
  #2  
EVO8 WHOA's Avatar
Evolved Member
iTrader: (10)
 
Joined: Sep 2003
Posts: 881
Likes: 0
From: Millersburg, OHIO
no its air fuel 10 parts of air to 1 part of fuel.. if it was the other way around yur motor would not be firing.... it would either lock up or gas will be pouring out the exhaust when trying to start lol..
Reply
Old Oct 24, 2005 | 11:18 PM
  #3  
dsevo's Avatar
Evolved Member
iTrader: (19)
 
Joined: Sep 2005
Posts: 971
Likes: 1
From: Kailua, HI
The higher the number the leaner it is. 11:1 is leaner than 10:1.
Reply
Old Oct 24, 2005 | 11:22 PM
  #4  
Rcebowl's Avatar
Thread Starter
Evolved Member
iTrader: (3)
 
Joined: Apr 2005
Posts: 747
Likes: 0
From: Tulsa, OK
word... soo lower the number.. the richer???
Reply
Old Oct 24, 2005 | 11:27 PM
  #5  
UT_Evo's Avatar
Evolved Member
iTrader: (5)
 
Joined: May 2004
Posts: 3,601
Likes: 0
From: SL,UT
Yeah, stock is about 8.8:1 aka, super duper rich.... Most tuned Evos (at least, that I know of on 91 octane) are 11:1 some N/A cars push even leaner conditions at like 12 or even 13:1
Reply
Old Oct 25, 2005 | 12:04 AM
  #6  
Rcebowl's Avatar
Thread Starter
Evolved Member
iTrader: (3)
 
Joined: Apr 2005
Posts: 747
Likes: 0
From: Tulsa, OK
bringin up 13:1 ... soo like compression.. what numbers are those talking about...

* sorry about these newbe questions *
Reply
Old Oct 25, 2005 | 12:07 AM
  #7  
halfnhalfevo's Avatar
Newbie
 
Joined: Jul 2004
Posts: 63
Likes: 0
From: cell #577403
+1 for the compression ratio info
Reply
Old Oct 25, 2005 | 11:53 AM
  #8  
Rcebowl's Avatar
Thread Starter
Evolved Member
iTrader: (3)
 
Joined: Apr 2005
Posts: 747
Likes: 0
From: Tulsa, OK
bump
Reply




All times are GMT -7. The time now is 04:11 AM.