View Full Version : octane number
my new motor will be 13.2 to1 compression
what octane number will I need to safetly run this motor
A friend of mine says he has used 108 with booster
others say 110
what do you guys use for fuel in a simmilar compression range, That I will have
My old moter had 13 to 1 compression. I ran 110 in it. I used to spray 150 to 175 NOS running 110 octane and never had detonating problems. Running NA or spray. That moter still lives, I sold it and went bigger. :wink:
mopar1968
02-24-2010, 06:33 PM
My little small block is almost 14.1 and i run 112 in it with no problems :!: :!:
''JUST MY TWO CENT'S WORTH''
cepx111
02-24-2010, 10:48 PM
13-1 in my BBC, 110 works fine.
jaxsmith
02-27-2010, 05:49 AM
Unless you plan on going way up in the atmosphere with RPM 110 will be fine. Leave the "Octane Booster" on the shelf.
gnsrule
02-27-2010, 08:32 AM
Why would you even want to use "octane Booster" ? It only boosts octane 4 points at best. From say 93 to 93.4, and thats as advertised. Ill bet its even less with higher octane.
Now if you were a body shop guy and had access to 55 gallon drums of Xylene or Touline that might be a differant story.
Craig
Why would you even want to use "octane Booster" ? It only boosts octane 4 points at best. From say 93 to 93.4, and thats as advertised. Ill bet its even less with higher octane.
Now if you were a body shop guy and had access to 55 gallon drums of Xylene or Touline that might be a differant story.
Craig
I am asking because this is new to me, I have only had 9.5 to 1 motors, this is my first high or higher compresion motor
Tod74
02-27-2010, 03:09 PM
I run Sunoco 110 in mine with 38 deg total timing, 13 to 1 no issues.
bbchevy
02-27-2010, 07:05 PM
110 Goes a LONG Way!
You will be Fine!
Unfortunately, 2 years ago,I could buy Torco 110 for 3.50-360 per gallon.Last season 6-8.00.The Price of going Fast!
Later
G 8)