What Type Of Gas Is Best
Member
Joined: Sep 2003
Posts: 71
From: Calgary, AB, Canada
The one thing not included in the above ^^^ stated article is regarding turbocharged vehicles. Despite the lower compression ratio, they need to use higher octane becuase of the forced air induction to reduce knock. Heat produced by turbochargers will cause 87 octane fuel to combust prematurely and therefore create that knocking sound.
Super Moderator
Joined: Feb 2002
Posts: 12,288
From: Amityville, New York
Originally Posted by guennirx7' date='Jan 15 2005, 01:03 PM
The FC-Models from 1985 to 1987 need Regular Gas. 91 Octane
From the Facelift 1988 to end they need all Premium. 95 Octane
Compresson ratio before Facelift N/T 9,4:1 Turbo: 8,5:1
Compression ratio after Facelift N/T 9,7:1 Turbo 9,0:1
We do this so in Germany
From the Facelift 1988 to end they need all Premium. 95 Octane
Compresson ratio before Facelift N/T 9,4:1 Turbo: 8,5:1
Compression ratio after Facelift N/T 9,7:1 Turbo 9,0:1
We do this so in Germany
maybe in germany octane is rated different?
Member
Joined: Jan 2005
Posts: 43
From: Germany/Neunkirchen near Kaiserslautern
Originally Posted by Rob x-7' date='Jan 15 2005, 10:15 PM
Maybe. Our Regular is 91, Premium 95, Superpremium 98 and we get 100 too, but this is to expensive, and an rotary didn`t needs it.
Guenni
Senior Member
Joined: May 2002
Posts: 22,465
From: California
Originally Posted by Rob x-7' date='Jan 15 2005, 01:15 PM
it is. theres 2 ways to rate octane mon, and ron. one ends up being higher than the other, i forget which. japan and europe use the higher one, we average both ratings. so euro spec 95 is close to our 93...
Thread Starter
Senior Member
Joined: Jan 2005
Posts: 151
From: Pa
will putting 87 or 93 damage my car at all? i am most likely going to put 87 in it because its cheaper and i hear rotaries like lower octane but now you guys go me thinking because i think the compression ratio in the s5 (89-91) rx-7's is higher. will that make a difference?
Senior Member
Joined: May 2002
Posts: 22,465
From: California
Originally Posted by MazdaspeedS591' date='Jan 16 2005, 08:46 PM
will putting 87 or 93 damage my car at all? i am most likely going to put 87 in it because its cheaper and i hear rotaries like lower octane but now you guys go me thinking because i think the compression ratio in the s5 (89-91) rx-7's is higher. will that make a difference?
no the tuning on the fc is really consrvative. if you're running more timing or something than 92 can be worth a couple extra hp
Thread
Thread Starter
Forum
Replies
Last Post
dietcoke
3rd Generation Specific
4
Oct 27, 2003 05:12 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)