VP Q16 fuel...anyone??

newmann
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newmann
Edited Date/Time 5/16/2019 9:04pm
Anyone ever run any of this? Went to pickup my old faithful Sunoco 116 octane Maximal the other day and now they only carry VP. They have C16 and Q16, both being for extremely high compression but the Q is oxygenated. Tempted to try it to get the beast back up and running.


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77Moto
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77Moto 5/16/2019 8:44am
5/16/2019 8:44am Edited Date/Time 5/16/2019 10:59am
Its just primarily ETBE, some hydrocarbons and some Trimethyl compounds.

Nothing out of the ordinary.
C16 primarily hydrocarbons and some others and is non oxygenated Q16 is around 9-10%.

If you were running sunoco maximal before, run the C16. Otherwise you'll be lean.
Derek Harris 5/16/2019 11:10am
5/16/2019 11:10am
I didn't like it myself Newman.
Power wasn't better than other options, tuning was harder/more specific to the fuel, and it has some tuning quirks

What are you needing a 116 for?

C12 on nearly all applications within MX is more than sufficient in the octane department - if you want a tiny bit more HP than c12 go with vp 113
newmann
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newmann 5/16/2019 11:48am
5/16/2019 11:48am
Derek Harris wrote:
I didn't like it myself Newman. Power wasn't better than other options, tuning was harder/more specific to the fuel, and it has some tuning quirks What...
I didn't like it myself Newman.
Power wasn't better than other options, tuning was harder/more specific to the fuel, and it has some tuning quirks

What are you needing a 116 for?

C12 on nearly all applications within MX is more than sufficient in the octane department - if you want a tiny bit more HP than c12 go with vp 113
For my 74 CR250 compression monster. I'm sure you will have it's twin over on your dyno eventually since Chris bought it from Andrew. You can bill him for dyno time and fill me in on the best mix...Smile

I originally used a 116 Phillips fuel at 50:1 with Bel Ray H1R and had excellent results. When that source dried up the only thing I could find local was VP C14 and that didn't do well. Found a Sunoco supplier after that and ran 116 Maximal in it with good results for about 6 years before it got parked. Looking for another Sunoco source but thought I'd give this VP a shot.

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newmann
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newmann 5/16/2019 12:06pm
5/16/2019 12:06pm
They have that too.

I got it fired up with a stock head and pump gas a short while back.It sure was good to just hear it run again after how long it's been down and apart! Wrapping up a bunch of small details to get it ready to ride and just put the high comp head back on it last night. There may be a jetting pass through the neighborhood tonight.

SlowAndLowe 5/16/2019 12:11pm
5/16/2019 12:11pm
I run C16 in one of my old Elsinores. Less than C14 and it pings when hot. It also has 265 Lbs of compression.
If it was water cooled it would probably be fine with C12.

That's why back in the day 115/130 and the old 145 AV gas was popular
newmann
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newmann 5/16/2019 1:47pm
5/16/2019 1:47pm
SlowAndLowe wrote:
I run C16 in one of my old Elsinores. Less than C14 and it pings when hot. It also has 265 Lbs of compression. If it...
I run C16 in one of my old Elsinores. Less than C14 and it pings when hot. It also has 265 Lbs of compression.
If it was water cooled it would probably be fine with C12.

That's why back in the day 115/130 and the old 145 AV gas was popular
Let's see some Elsie pics! What all have you got going for engine mods?
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dmm698 5/16/2019 6:26pm
5/16/2019 6:26pm
SlowAndLowe wrote:
I run C16 in one of my old Elsinores. Less than C14 and it pings when hot. It also has 265 Lbs of compression. If it...
I run C16 in one of my old Elsinores. Less than C14 and it pings when hot. It also has 265 Lbs of compression.
If it was water cooled it would probably be fine with C12.

That's why back in the day 115/130 and the old 145 AV gas was popular
newmann wrote:
Let's see some Elsie pics! What all have you got going for engine mods?
Q16 is big with the hill climb guys around in the northeast in the winter (snowmobiles). The RVP is super low and one of the Dyno shops up here has shown even freshly cracked 5 gal pails are stale. I’d steer away from q16 unless you plan to burn 5 gallons in a day.
Derek Harris 5/16/2019 9:04pm
5/16/2019 9:04pm
Bogett287 wrote:
Why not run t4 should work just as well.
Really low octane vs what is discussed here

These old air cooled engines require lots of deto resistance when they are tuned up and once they get HOT.

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