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Author
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Topic: What Octane Gas For 6 Cyl
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69 Sportsroof
Gearhead Posts: 2814
From: Valley, Alabama, USA
Registered: Mar 2002
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posted 11-19-2006 02:25 PM
 
What octane do you guys recommend for a 200 ci inline 6? I have a tank full of 87 in it now but would like to make sure I using what I should.
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Mooney
Gearhead Posts: 2357
From: Marietta, Ga
Registered: Oct 2003
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posted 11-19-2006 02:48 PM
87 Is what I always used in my '65 200. Used it for about 3 years before switching to the V8 with no problems.
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83j20
Gearhead Posts: 304
From:
Registered: Jul 2002
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posted 11-23-2006 11:22 PM
My stock '66 200/manual doesn't like the low octane gas. I use 92 only and can notice the difference.Perhaps with a better carb (just try to find a 1bbl that works well) and better ignition, 87 would work better. It doesn't ping but just runs noticeably smoother with the 92. [This message has been edited by 83j20 (edited 11-23-2006).]
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69 Sportsroof
Gearhead Posts: 2814
From: Valley, Alabama, USA
Registered: Mar 2002
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posted 11-26-2006 02:04 PM
I'm getting ping on acceleration and when climbing hills. Haven't had a chance to check the timing and such since I've been out of town the past few days. Today looks like as good a day as any.
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Moneymaker
Administrator Posts: 29200
From: Lyons, IL, USA
Registered: May 99
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posted 11-27-2006 12:00 AM
If it still has points make certain the dwell is set correctly.
6 cylinders are very sensitive to dwell/timing relationship.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First NHRA & IHRA 289 automatic Superstock Mustang in the TENS 06-99
First SS/MA in the TENS 04-03
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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69 Sportsroof
Gearhead Posts: 2814
From: Valley, Alabama, USA
Registered: Mar 2002
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posted 11-27-2006 08:00 AM
Thanks Alex. The points and coil are all I have left to replace.
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