Safe A/F ratio for 75 shot?

Reply Subscribe

Thread Tools

Search this Thread

May 17, 2006 | 10:09 PM

z28pat

Thread Starter

TECH Enthusiast

iTrader: (10)

Joined: Dec 2003

Posts: 537

Likes: 6

From: Sunrise, fl

Safe A/F ratio for 75 shot?

I recently got the car tuned for the new cam/stall,
and the a/f ratio is right at 13.0, will that be safe for a 75 wet shot?
Pat

May 17, 2006 | 10:20 PM

chris77

TECH Apprentice

Joined: Oct 2004

Posts: 361

Likes: 0

From: courps christi tx.

yes sir

May 19, 2006 | 12:56 AM

LoWeLL216

TECH Apprentice

iTrader: (1)

Joined: Oct 2003

Posts: 328

Likes: 0

From: San Diego, CA

That's pretty lean for a nitrous shot isn't it? I usually see guys recommending around 11.8-12.5 or so.

May 19, 2006 | 01:14 AM

CAT3

Restricted User

iTrader: (9)

Joined: Sep 2002

Posts: 7,603

Likes: 0

From: Sierra Vista, AZ

The car is tuned for 13:1 thats good. If you dont stray far from the manufacturers recommended jet pattern your nitrous kit will richen it up while on spray, which is exactly what you want. Although 75 is wee wittle shot, I would say 12.2-12.8 rich to lean.

May 19, 2006 | 01:24 AM

SmaknaSS

TECH Fanatic

iTrader: (1)

Joined: Sep 2002

Posts: 1,684

Likes: 0

I would shoot for 11.8 AFR, but thats just me.

May 19, 2006 | 09:01 AM

brad8266

TECH Senior Member

iTrader: (23)

Joined: Aug 2005

Posts: 8,797

Likes: 0

From: Watertown, NY

I tuned my car for 13.0 all across for NA. The recommended 150 shot jet ratings richened me up on the spray from mid 12's down to around 11.3 at the higher rpm's.

So yeah 13.0 is great becuase the recommended jetting will richen you up.