C-16 fuel in a stocker

Race Clean · 06-11-2021, 12:06 PM

It works good in supercharged engines

Glenn Briglio · 06-11-2021, 09:11 PM

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

I use C-12 13.8 to 1. Big Block Chevrolet.

Brett C · 06-12-2021, 09:43 PM

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

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

Quote:

Originally Posted by Adger Smith

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.

Adger Smith · 06-13-2021, 09:52 AM

Kyle,
My 1961 172 Cessna with the 0-300 Continental engine was designed for 85 octane fuel. The only aircraft fuel now available is 100LL,
A 100 Octane low lead. It burns so slow and cool that it makes these engines varnish up & stick exhaust valves.
I got an FAA STC to use automotive fuel.
I have found that a 50/50 mix of non Ethanol 87 octane pump gas and 100 LL works best. Climb out power is better & cruse is more economical.
Just like you gave your scooter what it wanted/was happy with, I gave my 0-300 air plane engine what made it happy.
It had too much " Octane" with 100LL.
A few years ago when we were VP dealers they had 54 different fuel blends available. That should really confuse things..lol
Way to many variables and combinations to just guess what works best.

06-11-2021, 12:06 PM	#1
Race Clean Member Join Date: Aug 2017 Posts: 159 Likes: 18 Liked 129 Times in 53 Posts	Re: C-16 fuel in a stocker It works good in supercharged engines __________________ Stop global whining

06-11-2021, 09:11 PM	#2
Glenn Briglio VIP Member Join Date: Nov 2002 Location: Massapequa Park,NY Posts: 1,290 Likes: 1,914 Liked 976 Times in 311 Posts	Re: C-16 fuel in a stocker I would check if c11 has enough octane for 13.5 to 1 compression before using it. __________________ 1989 Camaro Iroc-Z I/SA B&B Auto Machine Shop.

06-11-2021, 09:22 PM	#3
chris ok Senior Member Join Date: Jul 2002 Location: Long Island, New york Posts: 592 Likes: 131 Liked 46 Times in 29 Posts	Re: C-16 fuel in a stocker I use C-12 13.8 to 1. Big Block Chevrolet.

06-12-2021, 09:43 PM	#4
Brett C VIP Member Join Date: Oct 2011 Location: Thibodaux, LA Posts: 1,212 Likes: 338 Liked 1,088 Times in 228 Posts	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. __________________ Brett Candies 4192 Stock/SS God Bless America

06-13-2021, 03:26 AM	#5
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	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. __________________ Adger Smith (Former SS)

06-13-2021, 09:52 AM	#7
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: C-16 fuel in a stocker Kyle, My 1961 172 Cessna with the 0-300 Continental engine was designed for 85 octane fuel. The only aircraft fuel now available is 100LL, A 100 Octane low lead. It burns so slow and cool that it makes these engines varnish up & stick exhaust valves. I got an FAA STC to use automotive fuel. I have found that a 50/50 mix of non Ethanol 87 octane pump gas and 100 LL works best. Climb out power is better & cruse is more economical. Just like you gave your scooter what it wanted/was happy with, I gave my 0-300 air plane engine what made it happy. It had too much " Octane" with 100LL. A few years ago when we were VP dealers they had 54 different fuel blends available. That should really confuse things..lol Way to many variables and combinations to just guess what works best. __________________ Adger Smith (Former SS)