|
|
|
|
| Author |
|
|
Registered
Join Date: Feb 2001
Location: Mill Valley, CA
Posts: 204
|
Octane question
I was just reading the MFI manual and it states that for my year car=72 that I should run 87 octane. Does anyone go by this.
Thanks for any replies |
||
09-19-2001, 03:01 PM
|
|
|
Registered
Join Date: Oct 2000
Location: New York, NY USA
Posts: 92
|
Yep i do. The MFI was designed to run on 87, and there's no reason to run higher octane unless you've modified the compression ratio. I'm not an expert, but its a bit 'harder' to ignite the higher octane gasoline and it burns longer, which can possible change the way your car runs if your MFI is well tuned. I've always heard the rule of thumb is use the best quality, lowest octane gas you can get
 Brad |
||
|
09-19-2001, 03:45 PM
|
|
|
Moderator
|
With the low compression of those engines, 7.5 for T, 8.0 for E, 8.5 for S and 2.7RS, 91ROZ(US reg leaded,87) was sufficient. The relatively large overlap of the S/RS cams further reduces octane requirements.
------------------ Bill Verburg My Home Page  My Pelican Gallery page My Porsche Owners Gallery Page |
||
|
09-19-2001, 04:03 PM
|
|
1976 Porsche Carrera 3.0
1995 Porsche 993 Carrera Coupe
