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Registered
Join Date: Apr 2005
Location: Derry, New Hampshire
Posts: 618
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3.2 litre recommended octane
What is the recommended octane rating for the 3.2 litre motor? I am looking to replace my 3.0 with PMO's and part out this coming winter and purchase a used 3.2 and I know the 3.6 needs to run on premium fuel and my 3.0 can run on 87.
Thanks
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- Tyler 1988 911 Carrera Grand Prix White/Black 2015 Cayenne Diesel Black/ Luxor Beige/Black |
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04-30-2007, 05:29 AM
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Senior Lurker
Join Date: Oct 2005
Location: Atlanta
Posts: 313
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Here's a pretty good thread on the subject. I don't think there is a definate answer to this...
I would also be interested in suggestions on this topic, taking modifications into consideration. Chip, exhaust, etc
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Farnbacher Loles 2010 GT3 Cup car #87, 07 GT3, 05 GT3, 86 Targa, RSR project, 1978 Kremer, keen project Safari, Range Rover, 1969 chevelle, Isetta, Amphicar, Honda 50, Carpe Diem |
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04-30-2007, 05:59 AM
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Back in the saddle again
Join Date: Oct 2001
Location: Central TX west of Houston
Posts: 55,975
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The owners manual of my old '88 said 91 octane IIRC.
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Steve '08 Boxster RS60 Spyder #0099/1960 - never named a car before, but this is Charlotte. '88 targa  SOLD 2004 - gone but not forgotten
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04-30-2007, 06:43 AM
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Join Date: May 2001
Location: Peoples Republic of Long Beach, NY
Posts: 21,140
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there was a thread awhile ago about installing a knock sensor to those cars that didn't come with one.
Jim Sims and Randy Webb posted interesting info on various designs. What i got from it is that it's a difficult choice and it's not fool proof. That wrote me off right there. imo better safe w/high test than sorry unless you're running an expensive engine data monitoring system. almost like a small boat where the fuel cost should be a minor issue regarding total costs.
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Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
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04-30-2007, 07:02 AM
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Join Date: Dec 1999
Location: Novato, CA
Posts: 4,740
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With so much information on this topic in the past, has the search button stopped working?
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04-30-2007, 07:51 AM
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Registered
Join Date: Oct 2005
Location: Birthplace of Bix
Posts: 1,145
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The short answer is whatever the manual recommends, assuming it's a stock compression motor. You really have to run a high-compression ratio motor to justify anything above 91. My Carrera runs just fine on 87.
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Joe 85 Carrera 64 Honda Dream - for sale 71 Hodaka Super Rat - keeper |
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04-30-2007, 01:36 PM
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