What is the compression ratio for 98 octane gas?
93 is therefore ideal for lower compression ratio engines (generally low performance engines with a *ratio below 8.5:1), whereas 95 and 98 (*Ratios between 8.5:1 and 10:1) are more stable and suitable for high compression engines (often higher performance engines).
What octane is needed for 11 1 compression?
95 Octane. Gasoline with this octane number is known in Indonesia under the brands Pertamax Plus (produced by Pertamina), Super Extra (produced by Shell), and Primax (produced by Petronas). This type of gasoline is advisable for car engines with compression ratios of 11:1 to 12:1.
What octane is needed for 9.5 compression?
91-octane
The standard recommendation for street engines running on pump gas has always been to shoot for a 9.0:1 to perhaps 9.5:1 compression ratio. This is in order for the engine to safely work with pump gas, which for much of the country, is limited to 91-octane.
What octane is best for 12 to 1 compression?
What Octane Is Best For 12 To 1 Compression? At 12:1 compression, an 8138 # 93octane engine with electronic controls, an engine manual valve timing change and a clutch pedal sensor could handle this pressure well.
What octane do I need for 10 1 compression?
87-octane
Most stock gas engines have a compression ratio around 10:1 and run just fine on regular 87-octane gas.
What octane do you use for 15 1 compression?
720 at 60°F / Motor octane: 113 / Recommended for: +15:1, +430 CI circle tracks with long straights. Use for low compression with 2 stage nitrous oxide.
What octane do you use for 10 1 compression?
What octane is needed for 10.5 compression?
Before computer controlled ignition systems anything greater than 10:1 would quite likely require premium, but today an engine with a compression ratio of 10.5:1 can run on 87 octane (or at least my ’14 Honda Accord can).
Does higher compression require higher octane?
Engines with higher compression ratios usually require higher octane fuels. Many owners who operate vehicles designed to operate on 87 octane fuel experience ping and knock. They usually “fix” this problem by purchasing the higher priced, higher octane fuels.