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-   -   C-16 fuel in a stocker (https://classracer.com/classforum/showthread.php?t=79512)

hotrods1795 06-10-2021 07:38 PM

C-16 fuel in a stocker
 
Do I have to change the timing, is there any advantage in et.

Any information if appreciated.

GTX JOHN 06-10-2021 08:02 PM

Re: C-16 fuel in a stocker
 
Our Demons figure @ 11.8 to 1 and run the best on C11 even
with timing on the edge of Detonation last couple hundred feet.

What combo are you racing and how much compression?

hotrods1795 06-10-2021 08:18 PM

Re: C-16 fuel in a stocker
 
63 Dodge Polara - Max Wedge 13.5-1

Do I need to re-jet carbs or anything with timing?

mschafer 06-10-2021 08:23 PM

Re: C-16 fuel in a stocker
 
I am not a fuel chemist, but to my knowledge octane reduces detonation in higher compression engines due to slower burn time, in a stocker with lower compression C16 it would only slow it down,as it burns slower, I agree with GTX John on C11.

Race Clean 06-11-2021 12:06 PM

Re: C-16 fuel in a stocker
 
It works good in supercharged engines :D

Glenn Briglio 06-11-2021 09:11 PM

Re: C-16 fuel in a stocker
 
I would check if c11 has enough octane for 13.5 to 1 compression before using it.

chris ok 06-11-2021 09:22 PM

Re: C-16 fuel in a stocker
 
I use C-12 13.8 to 1. Big Block Chevrolet.

Brett C 06-12-2021 09:43 PM

Re: C-16 fuel in a stocker
 
We use C16 in our supercharged Cobra Jets. We used C12 in N/A combos. C25 used in the high end N/A combos.

Adger Smith 06-13-2021 03:26 AM

Re: C-16 fuel in a stocker
 
Try it..
Give the engine combination what it likes.
Once I lost a bet on C-16 during a dyno test.
It made 8 more HP with just a jet change over C-12.
A little more with timing.
Taught me a lesson.
Try it.

KRatcliff 06-13-2021 07:50 AM

Re: C-16 fuel in a stocker
 
Quote:

Originally Posted by Adger Smith (Post 641920)
Try it..
Give the engine combination what it likes.
Once I lost a bet on C-16 during a dyno test.
It made 8 more HP with just a jet change over C-12.
A little more with timing.
Taught me a lesson.
Try it.

An interesting poor boy dyno test for C11. I had put C11 in my 50 cc Zuma since I didn't have anything else at the time. I rode it from the track to the Kroger at Indy one year. The top speed on the scooter was just under 40 mph which almost wasn't enough on that road.

I stopped a convenience store and filled up with regular unleaded. It was worth over 5 mph. That gave me a better idea how much a quicker burning fuel can effect a lower compression engine.

That extra speed gave me comfort as I zipped past the women's prison.


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