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  •  » Great site for FYI

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    12/30/2021 9:46 AM  #1

    Don
    Senior 24-7 FYI Addict

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    From: Coppell, Texas
    Registered: 4/02/2013
    Posts: 1,221

    Great site for FYI

    These type of tests are exactly what I set up / ran / analyzed  for the GOV on mil aircraft.   (Yes I miss it)  

    Great FYI on Automobile gas.
     
      https://www.facebook.com/EngineeringExplained/    videos/2022590047916503   

    also log onto site,,  many great tear down audits that explain/analyze EXACTLY what is going on.      

    Last edited by Don (12/30/2021 9:55 AM)

     

    12/30/2021 9:53 AM  #2

    Rufus68
    I FYI 24-7

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    From: Knoxville, TN
    Registered: 4/26/2017
    Posts: 889

    Re: Great site for FYI

    I'm not on Facebook myself, but he has a channel on YouTube:
    https://www.youtube.com/user/EngineeringExplained

    1968 T-code Coupe with a 302.  Nice car, no show stopper for sure, but I like it.
     

    12/30/2021 8:23 PM  #3

    HudginJ3
    Senior 24-7 FYI Addict

    Offline

    From: Cedar Hill, TX
    Registered: 4/29/2015
    Posts: 1,249

    Re: Great site for FYI

    I don't buy it. There is not enough information. Starting with traction, which means rubber compound and tread design, and vehicle weight, etc. Get everything equal except the item you are arguing about then we will talk. If your arguing power then doing a tug of war would not be the test. but a dynamometer would. 

    70, ragtop 351W/416 stroker Edel Performer heads w pro flow 4, Comp roller 35-421-8. T5
     

    12/31/2021 8:50 AM  #4

    TKOPerformance
    Hyper FYIFORD ADDICT

    Offline

    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,498

    Re: Great site for FYI

    HudginJ3 wrote:

    I don't buy it. There is not enough information. Starting with traction, which means rubber compound and tread design, and vehicle weight, etc. Get everything equal except the item you are arguing about then we will talk. If your arguing power then doing a tug of war would not be the test. but a dynamometer would. 

    Provided you corrected the dyno numbers for air conditions, which can change during the day and effect power (temperature, humidity, etc.).  There are standard correction factors for this, but I never hear mention of it, and often see them missed in such tests. 
     

     

    12/31/2021 9:38 AM  #5

    Rufus68
    I FYI 24-7

    Offline

    From: Knoxville, TN
    Registered: 4/26/2017
    Posts: 889

    Re: Great site for FYI

    Speaking about his site, I'd never heard of 85 octane regular gas here before this video: 
    https://www.youtube.com/watch?v=kJyd6C99_3g
    .
    Good to know that I should avoid it next time I'm in the higher elevations.
     

    1968 T-code Coupe with a 302.  Nice car, no show stopper for sure, but I like it.
     

    12/31/2021 11:17 AM  #6

    red351
    I FYI 24-7

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    From: Carlisle, PA
    Registered: 5/31/2018
    Posts: 445

    Re: Great site for FYI

    Rufus68 wrote:

    Speaking about his site, I'd never heard of 85 octane regular gas here before this video: 
    https://www.youtube.com/watch?v=kJyd6C99_3g
    .
    Good to know that I should avoid it next time I'm in the higher elevations.
     

    With the red car back home at 700ft the old cleveland with near 11.1 comp it can get away with 93 octane. Driving to Montrose Co. at 5000+ft  premium 91 dosen't cut it.
    Been towing a lot the last 2 months and it seems that a tank of gas goes a little further between fill ups at higher elevations. So is it modern technology or just my imagination?

     

    12/31/2021 3:59 PM  #7

    TKOPerformance
    Hyper FYIFORD ADDICT

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    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,498

    Re: Great site for FYI

    red351 wrote:

    Rufus68 wrote:

    Speaking about his site, I'd never heard of 85 octane regular gas here before this video: 
    https://www.youtube.com/watch?v=kJyd6C99_3g
    .
    Good to know that I should avoid it next time I'm in the higher elevations.
     

    With the red car back home at 700ft the old cleveland with near 11.1 comp it can get away with 93 octane. Driving to Montrose Co. at 5000+ft  premium 91 dosen't cut it.
    Been towing a lot the last 2 months and it seems that a tank of gas goes a little further between fill ups at higher elevations. So is it modern technology or just my imagination?

    No, that makes sense.  Thinner air, would use less fuel at the same air/fuel ratio, but there would be a corresponding loss of power.  Modern EFI just copes with it better than a carb could.  Newer engines may also be able to monkey with cam timing, ignition timing, and if equipped turbo waste gate settings to get some of that lost power back so it might not be as noticeable. 
     

     

    1/01/2022 12:17 AM  #8

    Rufus68
    I FYI 24-7

    Offline

    From: Knoxville, TN
    Registered: 4/26/2017
    Posts: 889

    Re: Great site for FYI

    Higher elevations work like reverse boost for normally aspirated engines.  So your 11.1 compression ratio engine would test with a lower compression at 5000ft and so would tolerate a lower octane fuel without detonation.  All of this based on the explanation from the video.  Your power output would decrease from the smaller charge of air/fuel mix drawn in each stroke due to the decreased air pressure.

    1968 T-code Coupe with a 302.  Nice car, no show stopper for sure, but I like it.
     

    1/01/2022 2:25 PM  #9

    BILLY WALTON from GEORGIA
    Carrollton, GA Bash Host

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    From: CARROLLTON GEORGIA
    Registered: 4/14/2013
    Posts: 2,431

    Re: Great site for FYI

    I remember regular and unleaded

    Its really me....I fixed my caps lock .
     

    1/01/2022 3:23 PM  #10

    Rufus68
    I FYI 24-7

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    From: Knoxville, TN
    Registered: 4/26/2017
    Posts: 889

    Re: Great site for FYI

    Me too.  That was when Regular was always 89 octane and we were surprised to see the Unleaded listed as 87 octane.

    1968 T-code Coupe with a 302.  Nice car, no show stopper for sure, but I like it.
     

    1/01/2022 6:05 PM  #11

    red351
    I FYI 24-7

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    From: Carlisle, PA
    Registered: 5/31/2018
    Posts: 445

    Re: Great site for FYI

    Here on the east coast reg. was 91.  I spent nites working after school working pumping gas at a Gulf station.
    Gulftane was 89 oct 29.9 per gal.
    Goodgulf was 91 & 31.9 per gal.
    NoNox I can't remember oct. or the dollar amount, I just knew I couldn't afford it.

     

     

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