gas
what type of gas and what octane do you run in a rx7? N/A and a turbo? Is chevron good for turbos?
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run the lowest for n/as and the highest for turbos
i am on the safe side and run any name brand gasoline but supposedly the other gas is the same. |
87 octane for my NA
Runs best on that stuff. |
87 for a N/A
91-93 for a stock Turbo |
87 for my n/a, and I would use super in a turbo. And yes Chevron is good gas to put in your 7. That's all I put in mine (but thats only cuz I work at one and get my gas for free, even though I'm not supposed too ;) )
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87 R+M/2 for NA, 87 R+M/2 for TII. If in doubt, read the owner's manual.
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BTW, super unleaded is a waste of money.
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87 runs MUCH better in my N/A than super
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so ice mark says i should run 91-93 octane in my turbo
but evil aviator says i should run 87? which one is most prefered? cuz i know both these guys are knowledgeable? |
Ok so why is super a waste of money on a turbo?
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aviator... is that advice for a stock setup? or a larger power turbo setup... b/c if you're running high boost, i don't think you want to be running 87 octane, unless i've got something mixed up.... care to clarify?
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I've had detonation under full boost on a stock setup using 87 oct gas. Of course it was around 96-100 degrees outside with the AC on full blast.
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Originally posted by Evil Aviator 87 R+M/2 for NA, 87 R+M/2 for TII. If in doubt, read the owner's manual. |
i was wondering if that was a typo to
but then on his next reply he said that super unleaded is a waste of money |
bot the n/a and TII were meant to use 87 octane from the factory. If you have a nice big fat turbo though I don't think you should stay with 87.
Santiago |
If you read the Owners Manual that came with the car, assuming you have one, says to use 87 for Turbo and Non-turbo cars. If your TII is bone stock and you're not racing people, then you should be fine with 87. If your TII has a free flowing exhaust, then use 91 or 93. N/As run better with 87.
Mazda actually won a race running 87 while their competition ran higher octane fuel. The other teams nearly died when they heard Mazda beat them running 87 octane fuel. :p: |
well all i have is a intake filter so i guess i'll just run 87 octane for now
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well NA's run noticably better on lower octane fuel. I don't know how turbos treat it, but I think I would be willing to spend the extra dollar per fillup in the hopes of my engine lasting longer if I had one.
edit: oh also, if you're going to be driving the car really hard you should probably put high octane in it for safety's sake. |
Originally posted by Evil Aviator BTW, super unleaded is a waste of money. I can handle the slight decrease in performance for the added safety margin against detonation that Super Unleaded provides. Jarrett |
Originally posted by 1987RX7guy If you have a nice big fat turbo though I don't think you should stay with 87. Santiago Jarrett |
Originally posted by CrackHeadMel is this a typo? Here are the basic types of octane numbers. Please excuse me for simplifying things. RON = Research Octane Number = Knock rating at cruise MON = Motor Octane Number = Knock rating under load SON = Supercharged Octane Number = Knock rating under boost PON = Pump Octane Number = The average of RON and MON = (RON+MON)/2, but usually shown on the pump as "The R+M/2 Method". The USA uses PON, while most other countries use RON. As you may have guessed, since there is less chance knocking at cruise than there is at an average of cruise & load, RON is always higher than PON for the same fuel. This is why it appears that other countries have higher octane fuel than the US. Anyway, both the NA and TII 2Gen RX-7 are rated for a minimum of 87 PON. You can use higher octane if you like, but in most cases it's a waste of money. Some reasons for increasing the octane include, but are not limited to, atmospheric conditions (extremely hot, dry, high barometric pressure), driving conditions (load, especially pulling a trailer or going up a steep hill), increased boost levels from stock, worn engine and/or turbocharger, or engine out of tune. If you notice any knocking, then by all means switch to a higher octane fuel. Originally posted by poor college student aviator... is that advice for a stock setup? or a larger power turbo setup... b/c if you're running high boost, i don't think you want to be running 87 octane, unless i've got something mixed up.... care to clarify? Originally posted by 1987RX7guy If you have a nice big fat turbo though I don't think you should stay with 87. Originally posted by J-Rat I can handle the slight decrease in performance for the added safety margin against detonation that Super Unleaded provides. |
damnn he kind of got all of us on this one...
thanks evilaviator for schooling us =p |
Actually, this was all explained in about 100 other posts.
Jarrett https://www.rx7club.com/forum/showth...ghlight=Octane |
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