SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: Sleekcrafter1970 on September 07, 2013, 12:54:00 PM

Title: What kind of octane do you use?
Post by: Sleekcrafter1970 on September 07, 2013, 12:54:00 PM

I have a 455 olds. What octane are you using? 87-92?


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Title: Re: What kind of octane do you use?
Post by: carrera202 on September 07, 2013, 01:02:12 PM

I have a 454 I run 91


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Title: Re: What kind of octane do you use?
Post by: j1mmy420 on September 07, 2013, 01:14:19 PM

That's a good question
I have a stock sbc 350 been running 89
But also ran good on 87


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Title: Re: What kind of octane do you use?
Post by: jamiemwedmore1234 on September 07, 2013, 01:31:29 PM

I'm run 91 anything less it pings


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Title: Re: What kind of octane do you use?
Post by: GottaJet on September 07, 2013, 01:40:01 PM

I'm running 91, I've run 87 no ping but I can definitely feel better performance with the higher  octane.


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Title: Re: What kind of octane do you use?
Post by: SoCalPSD on September 07, 2013, 01:45:40 PM

87 always and never a problem.

Title: Re: What kind of octane do you use?
Post by: mobmentality on September 07, 2013, 01:48:43 PM

102

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Title: Re: What kind of octane do you use?
Post by: carrera202 on September 07, 2013, 02:17:00 PM

Quote from: mobmentality on September 07, 2013, 01:48:43 PM

102

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WHAT!!!!! 😯


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Title: Re: What kind of octane do you use?
Post by: mobmentality on September 07, 2013, 02:19:07 PM

Quote from: carrera202 on September 07, 2013, 02:17:00 PM

WHAT!!!!! 😯


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What??????

Title: Re: What kind of octane do you use?
Post by: Jet Boat Maloney on September 07, 2013, 02:39:38 PM

Av gas


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Title: Re: What kind of octane do you use?
Post by: 76 Bonneville on September 07, 2013, 03:05:47 PM

110

Title: Re: What kind of octane do you use?
Post by: Chad krieger on September 07, 2013, 03:50:00 PM

I have a 455 I'm running 100 octane.


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Title: Re: What kind of octane do you use?
Post by: Sleekcrafter1970 on September 08, 2013, 12:31:25 AM

Quote from: Sleekcrafter1970 on September 07, 2013, 12:54:00 PM

I have a 455 olds. What octane are you using? 87-92?


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LOL everyone, i was wondering if any would notice 92...

Title: Re: What kind of octane do you use?
Post by: Marcsrollin on September 08, 2013, 12:31:46 AM

VP-C12  >:D >:D >:D

Title: Re: What kind of octane do you use?
Post by: Sleekcrafter1970 on September 08, 2013, 12:32:20 AM

Quote from: Sleekcrafter1970 on September 07, 2013, 12:54:00 PM

I have a 455 olds. What octane are you using? 87-92?


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I used 91 today noticed a big difference.

Title: Re: What kind of octane do you use?
Post by: Marcsrollin on September 08, 2013, 05:19:16 PM

Quote from: ka0tyk on September 08, 2013, 02:00:58 AM

91 in havasu when its 110* out.  when its cooler ill drop to 87.  i dont have any crazy compression going on so theres no reason to run high octane fuel all the time.

Higher octane fuel will allow you to run a little bit more timing , which can make a pretty big seat of the pants difference.

Title: Re: What kind of octane do you use?
Post by: jet fever on September 20, 2013, 08:06:36 PM

Octane Rating All depends on how the compression of your motor will handle it (as its stated a few times on here)

That being said the higher the octane the better the fuel burn the better the mileage (Which in a boat you probly won't notice.

Run 87 if you have the compression to allow it if it pings run the next level up.  I don't know too many people running 87 with a big block anyway a small block I'm sure will have no issue unless its built and has big compression. 

Long story short run what your motor will allow your wallet to pay for

Title: Re: What kind of octane do you use?
Post by: mobboss on September 20, 2013, 08:15:43 PM

i have a olds 455, not stock, but not a race motor either. i use nothing less than 91! no pinging so id say my motor is happy!

Title: Re: What kind of octane do you use?
Post by: 5150whiteboy on September 20, 2013, 08:36:11 PM

Quote from: carrera202 on September 07, 2013, 01:02:12 PM

I have a 454 I run 91


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X2 on that


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