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1. www.yamahajetboaters.com › forum › viewtopicYamaha Jet Boaters • View topic - what octane of gas to use

   www.yamahajetboaters.com › forum › viewtopic

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   2 days ago · Your entire engine is tuned and designed for 87 octane. If you can get 87 ethanol free, that is even better. I don't put a great deal of hours on my boat...so I use Marine Grade Stabil in every tank, so no matter how long it sits, it is protected from phase separation and the fuel life is extended.

2. www.bigbeeboats.com › blog › key-benefits-of-usingOutboard Motor Benefits for Boating | Duncannon, PA

   www.bigbeeboats.com › blog › key-benefits-of-using

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   3 days ago · Experience enhanced maneuverability, easy maintenance, versatile performance, and fuel efficiency with outboard motors for a superior boating Skip to main content 717.957.3838

3. Videos

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     Octane | Maintenance Matters

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     Octane Rating Engines for fuel octane test

     Sep 6, 2018

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     Mercury 115 HP Four Stroke | Ethanol, 87 Octane, Durability, Warranty

     May 1, 2015

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4. outsidegroove.com › 2021 › 03Crate Engine Fuel Test: 110 Race Fuel vs. 91 Pump Gas

   outsidegroove.com › 2021 › 03

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   4 days ago · The test compared the performance of VP Racing Fuels 110 versus 91 octane pump gas with a Chevrolet Performance 602 crate engine. The results showed pump gas produced 5 hp and 9 lb-ft torque more than 110.

5. www.cars24.com › news › adviceOctane Number and Premium Fuels: Actual Benefits or ... - CARS24

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   3 days ago · In India, the minimum octane rating for fuels as prescribed by Government through Bharat 3 emission norms is 91 Octane. The normal unleaded fuel sold through any company in any city has an octane rating of 91. The premium fuels like Extra-Premium, Speed and Power also have the same octane rating of 91. They, however, do consist of extra ...

6. yamahajetboaters.com › forum › viewtopicYamaha Jet Boaters • View topic - Average cost for engine ...

   yamahajetboaters.com › forum › viewtopic

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   2 days ago · I called a local Yamaha authorized repair shop and they quoted me around $3000 - $3500 for a complete overhaul of one engine saying the crank will need to be replaced if the bearings are bad and the cylinders may need re-chromed.

7. www.boatpartstore.com › iocoolingInboard stern drive cooling systems and how they work

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   5 days ago · There are two types of cooling systems commonly found on inboard/outboard boat motors. Figure 1 shows a typical fresh water dependent cooling system. With this system, the motor is totally dependent of fresh seawater being present to provide proper cooling characteristics.

8. People also ask

   What engine octane should I use?

   • This is why some engines require 100+ octane with an 11:1 compression ratio while others are perfectly fine on 91 octane with a 13:1 compression ratio. E-85 has an equivalent octane rating of 105, and with an expected operating temperature of around 180°F, the maximum dynamic CR is slightly above 10.5

   Wallace Racing - Effective Compression Ratio Calculator

   www.wallaceracing.com/eff-cr.php

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   Does a crate engine have a high octane rating?

   • The results determined that the pump gas offered more power and torque. Generally, the more compression an engine has, the higher the octane rating it needs. However, as far as race engines, the Chevrolet Performance crate engines have a relatively low compression ratio.

   Crate Engine Fuel Test: 110 Race Fuel vs. 91 Pump Gas

   outsidegroove.com/2021/03/crate-engine-fuel-test-110-race-fuel-vs-91-pump-gas/

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   What Octane CR should I use?

   • It is the effective CR that determines how much the fluid is actually compressed during engine operating and therefore the minimum octane rating necessary to avoid pre-detonation. This is why some engines require 100+ octane with an 11:1 compression ratio while others are perfectly fine on 91 octane with a 13:1 compression ratio.

   Wallace Racing - Effective Compression Ratio Calculator

   www.wallaceracing.com/eff-cr.php

   See all results for this question

   Is 91 octane pump gas better than 110?

   • Baldwin Racing Engines compared the performance of 110 race fuel to 91-octane pump gas. The results determined that the pump gas offered more power and torque. Generally, the more compression an engine has, the higher the octane rating it needs.

   Crate Engine Fuel Test: 110 Race Fuel vs. 91 Pump Gas

   outsidegroove.com/2021/03/crate-engine-fuel-test-110-race-fuel-vs-91-pump-gas/

   See all results for this question

9. www.wallaceracing.com › eff-crWallace Racing - Effective Compression Ratio Calculator

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   3 days ago · It is the effective CR that determines how much the fluid is actually compressed during engine operating and therefore the minimum octane rating necessary to avoid pre-detonation. This is why some engines require 100+ octane with an 11:1 compression ratio while others are perfectly fine on 91 octane with a 13:1 compression ratio.