2005 Mazda rx-8 GAS!!!
03-22-2011, 07:44 PM
#51
Registered
Join Date: Apr 2007
Location: Springfield,IL
Posts: 163
Likes: 0
Received 0 Likes
on
0 Posts
"Many serious rotary racers bring their own low octane gasoline to tracks that supply only racing gasoline. From "How to Modify Your Mazda RX-7", by Dave Emanuel and Jim Downing, HP Books, 1987, ISBN 0-89586-383-9, p 47-8:
". . . the best results are obtained with conservative spark-lead calibrations provided the engine is fed a diet of low-octane fuel. The fact that both 1985 and 1986 IMSA Camel Lights championships were won with low-octane fuel is a rather definitive statement . . . ."
So if you want best performance from your NA rotary, you want lowest octane. The lower cost of it is a nice bonus."
http://www.turborx7.com/faqs.htm
". . . the best results are obtained with conservative spark-lead calibrations provided the engine is fed a diet of low-octane fuel. The fact that both 1985 and 1986 IMSA Camel Lights championships were won with low-octane fuel is a rather definitive statement . . . ."
So if you want best performance from your NA rotary, you want lowest octane. The lower cost of it is a nice bonus."
http://www.turborx7.com/faqs.htm
I didn't realize this was the 1985 RX-7 forum.
wait its not ? 
03-22-2011, 08:00 PM
#55
"Many serious rotary racers bring their own low octane gasoline to tracks that supply only racing gasoline. From "How to Modify Your Mazda RX-7", by Dave Emanuel and Jim Downing, HP Books, 1987, ISBN 0-89586-383-9, p 47-8:
". . . the best results are obtained with conservative spark-lead calibrations provided the engine is fed a diet of low-octane fuel. The fact that both 1985 and 1986 IMSA Camel Lights championships were won with low-octane fuel is a rather definitive statement . . . ."
So if you want best performance from your NA rotary, you want lowest octane. The lower cost of it is a nice bonus."
http://www.turborx7.com/faqs.htm
". . . the best results are obtained with conservative spark-lead calibrations provided the engine is fed a diet of low-octane fuel. The fact that both 1985 and 1986 IMSA Camel Lights championships were won with low-octane fuel is a rather definitive statement . . . ."
So if you want best performance from your NA rotary, you want lowest octane. The lower cost of it is a nice bonus."
http://www.turborx7.com/faqs.htm
03-22-2011, 08:31 PM
#56
Registered User
from what I was told from a mazda pr rep, ( back when i sold cars for mazda ) he said mazda put premium only on the lid as a "just in case" because not enough testing was done with the other fuels. So to be safe, mazda said premium only. He assured me using 87 octane would not hurt the car but not enough tests were made to prove that, but putting 89 octane would be just fine and no warranty issues would occur if they knew you used 89 octane in the car. 89oc is a form of premium fuel compared to the 87 octane. Now before people attack me, its just what I was told.
03-23-2011, 08:01 AM
#60
"Many serious rotary racers bring their own low octane gasoline to tracks that supply only racing gasoline. From "How to Modify Your Mazda RX-7", by Dave Emanuel and Jim Downing, HP Books, 1987, ISBN 0-89586-383-9, p 47-8:
". . . the best results are obtained with conservative spark-lead calibrations provided the engine is fed a diet of low-octane fuel. The fact that both 1985 and 1986 IMSA Camel Lights championships were won with low-octane fuel is a rather definitive statement . . . ."
So if you want best performance from your NA rotary, you want lowest octane. The lower cost of it is a nice bonus."
http://www.turborx7.com/faqs.htm
". . . the best results are obtained with conservative spark-lead calibrations provided the engine is fed a diet of low-octane fuel. The fact that both 1985 and 1986 IMSA Camel Lights championships were won with low-octane fuel is a rather definitive statement . . . ."
So if you want best performance from your NA rotary, you want lowest octane. The lower cost of it is a nice bonus."
http://www.turborx7.com/faqs.htm
03-23-2011, 08:18 AM
#61
I'm sorry that wasn't some type of personal attack or anything like it. I only said somethings because that's what the manual states. I personally know my car runs like poo on anything less than 91. I just dont understand why people who love their cars so much risk things like performance and life expectancy over $3. Maybe your car runs fine on 87 like some have said, but if I was one of those people I would be wanting to know y my car does fine on 87 and others do not.
I just think it's silly to risk a investment to save $3 a week.
I know you said other things but my home network is still down... So I'm not going to try to reedit my post.
-Shawn
I just think it's silly to risk a investment to save $3 a week.
I know you said other things but my home network is still down... So I'm not going to try to reedit my post.
-Shawn
Now, if you are at risk of knock or have a validly tested reason for using the higher octane by all means do so, otherwise do so only if it makes you sleep better because that is the only advantage you will be getting.
03-23-2011, 11:18 AM
#62
..and I apologise for my over zealot reply. Yours and my decisions are a risk/reward analysis for using a specific grade of fuel. This decision is based on knowledge of the consequences of our choices. I can not answer why you have made your choice but mine came from a great deal of research and listening to and speaking with those who have far greater knowledge of the rotary then myself. For the most part these people run lower octane fuel for the reasons I have stated. These are people who work on Rotary's ever day and have seen failed engines and have a pretty good idea as to why they are failing. So based on the fact that most field experts use lower octane, the fact that I see no improvement from higher octane, the risk of engine failure in my climate is no greater and the addition cost of using higher octane. It was a no brainer to switch to the lower octane. At the same time I believe a great deal of people use the higher octane because Mazda stated they should in later models do so with out understanding why they are doing it.
Now, if you are at risk of knock or have a validly tested reason for using the higher octane by all means do so, otherwise do so only if it makes you sleep better because that is the only advantage you will be getting.
Now, if you are at risk of knock or have a validly tested reason for using the higher octane by all means do so, otherwise do so only if it makes you sleep better because that is the only advantage you will be getting.
Yes mine will "Ping/Knock" (whatever it is, its not smooth after +5krpms) on 87, that's what was in the car when I bought it. After my first fill-up on 93 with premix (I run about 1oz 2-stroke oil to 3 gallons of gas) the idle got smoother (wasn't perfect, but noticed a big difference) and acceleration was much better/smoother. The real problem was the coils/wires/plugs. After that it ran awesome and my MPG improved greatly. I tried 87 (with premix) one more time after and the ruff idle and high rpm issues reappeared (not as bad, but I did notice a difference). I cant really compare MPG though, I drive like 90% city and sometimes there is nothing you can do but idle all day trying to go 8miles.
I understand what your saying about 87oct though, my 7's ran great on it as well, but my 8 is a totally different story...
I never tried 89, not even sure why lol
-Shawn
Last edited by 1.3_LittersOfFurry; 03-23-2011 at 01:10 PM.
03-23-2011, 11:40 AM
#63
turbo_8
Thread Starter
Join Date: Nov 2010
Location: Wisconsin
Posts: 59
Likes: 0
Received 0 Likes
on
0 Posts
obviously this isnt a stupid *** question if im getting all these sorts of different answers like use 91+ or people saying there using regular and its fine. So im making sure dumbass.
03-23-2011, 11:58 AM
#64
Maybe not NG, but propane would be interesting. Less carbon build-up too.
03-23-2011, 01:52 PM
#65
Registered User
Join Date: Aug 2010
Posts: 27
Likes: 0
Received 0 Likes
on
0 Posts
No disrespect to your dad or anything but mist people that work at a dealer shop don't know jack squat. There's a difference from a car enthusiast and a car salesman. One loves cash and one loves cars. I would pay that extra 4 bucks to keep my bab happy. <3
Thread
Thread Starter
Forum
Replies
Last Post
akagc
RX-8's For Sale/Wanted
7
08-11-2015 07:07 PM
