Don Terrill’s Speed-Talk

Anyone try VP's Q16 gas? It says that it is good for 3 to 5% more power.

I have had two other engine builders call me and say thet saw a 25 HP increase on a 700 HP engine. I have not tried it myself yet, but I intend to do so ASAP.

JOE SHERMAN RACING ENGINES

15 to 25 hp on 960-1000hp engines,jet up and hang on.just did 2 engines with it both 15+ cr 540 cu. intraditional pontiac 1 carb made 981,mopar B1made 1010,bracket race type engines

We have had same type of results on 3 different projects also in that 900-1000 hp range. Jet up 3-4 sizes and no adjustment to ign timing. 10-25 HP depending on specifics. It does seem like the more efficient the engines were the less we gained. Got 22-25 hp on a 1.75hp/ci but only 10-12 on a 2.3 hp/ci engine.

Since I run a blown gas deal I pay pretty close attention to available gas. The Q16 is oxygenated and in naturally aspirated engines you should see some power increases if jetting up about 5 to 6%. It also should take more timing in general, the added methanal increases the octain rating. In blown applications if your running an intercooler it also makes more power over VP's C16. But in non-intercooler applications you have to be careful because the distillination figures are lower than C16, meaning the fuels boils off at a lower temp. The very best gas for me is VP's Import. But it's pretty expensive...unless you really need it.
That's my experience any ..............blessings............Ron.

I dynoed my 565 this past wekend. The Q16 picked up 30 horsepower over C15. The motor was 1113 on C15, 1141 on Q16. The motor has 15.4 to 1 CR.

Is it an ok fuel to use with nitrous oxide?

Yes Q16 works good with nitrous. One of the local ten five guys ran career best times after switching to Q16.

According to VP you need to jet up about 4-5% with this fuel. To the best of my calculations if you are currently running C14 with your jetting optimized, just by switching the fuel you will have jetted up by 2.8% due to specific gravity. My question is; do you need to jet up an additional 4-5% or only the extra 1.5-2%? Also on a twin dominator setup, how much is 4-5% or 1.5-2% roughly, 1-2 jet sizes? Just thinking outloud here.

Just dynoed with it tonight for the first time. 588 BBC with 385CFE heads,LSM 55mm cam 284-300 on 114, 920-880 lift. 14.9 to 1 CR. Best power with Track Tech 114 was 1068 at 7600rpm. Pro Systems 1300 with 96 jets, Sniper intake with 1" spacer. Purged the fuel system and put in the Q16 fuel with 98 jets and picked up over 20 horsepower. Never seen anything like this EVER. Moved timing to from 34 to 35 degrees, 101 jets and finished the day with 1101. There was no power increase with the timing and the conventional fuel.

usaracing wrote:Just dynoed with it tonight for the first time. 588 BBC with 385CFE heads,LSM 55mm cam 284-300 on 114, 920-880 lift. 14.9 to 1 CR. Best power with Track Tech 114 was 1068 at 7600rpm. Pro Systems 1300 with 96 jets, Sniper intake with 1" spacer. Purged the fuel system and put in the Q16 fuel with 98 jets and picked up over 20 horsepower. Never seen anything like this EVER. Moved timing to from 34 to 35 degrees, 101 jets and finished the day with 1101. There was no power increase with the timing and the conventional fuel.

Great power, I will be trying Q-16 in my 555 soon.

Was the Sniper worked over or just a gasket match ?

Intake was port matched and blended in the plenum to match the 1" Reher Morrison spacer/shear plate combo.

usaracing wrote:Intake was port matched and blended in the plenum to match the 1" Reher Morrison spacer/shear plate combo.

Thanks

I too have been looking at the Q-16. Once I get to the track and do some runs with the ole C-16 then the switch will be on. Wow that 33 hp in just fuel. Thats awsome, that 588 makes some steam...

It is interesting to note that all gasoline fuels make virtually the same BTUs of heat energy per pound of air burned. Same being defined as within one percent.

Yet clearly, fuels can and do produce power improvements in certain engines under certain conditions.

Why is this?