Race gas mixture! - Toyota Yaris Forums

ivanstepul · 11-23-2013, 07:50 PM

mixing 110 racing gas with vpower . It is harmful to the engine and if not what is the right ratio? I have mixed 3 gallons 93vpower gas with 1/9 gallon race gas.

juicyjosh · 11-29-2013, 12:16 AM

It's not harmful to the engine, and the best ratio is 0:1.

If your engine is stock, the ecu has been mapped by Toyota to run on regular American gas. Simply putting 110 octane into a stock Yaris engine doesn't turn it into a racing engine. Instead, compared to regular gasoline, the stock Yaris engine with "110 octane" in the tank will produce less power due to the fewer number of high energy molecules per volume injected into the engine, per the chemical composition of the fuel designated as "110 octane." Less power per volume of fuel means that more "110 octane" fuel is required by the engine to produce the same power and torque produced by a comparatively lesser volume of 87 gas, so fuel mileage is also reduced.

High(er) octane fuel is used to help prevent preignition and detonation in forced induction systems or in high compression N/A applications. A stock Yaris engine is neither of these.

cali yaris · 11-29-2013, 10:12 AM

^ what he said

ivanstepul · 11-30-2013, 09:55 PM

Quote:

Originally Posted by juicyjosh

It's not harmful to the engine, and the best ratio is 0:1.

If your engine is stock, the ecu has been mapped by Toyota to run on regular American gas. Simply putting 110 octane into a stock Yaris engine doesn't turn it into a racing engine. Instead, compared to regular gasoline, the stock Yaris engine with "110 octane" in the tank will produce less power due to the fewer number of high energy molecules per volume injected into the engine, per the chemical composition of the fuel designated as "110 octane." Less power per volume of fuel means that more "110 octane" fuel is required by the engine to produce the same power and torque produced by a comparatively lesser volume of 87 gas, so fuel mileage is also reduced.

High(er) octane fuel is used to help prevent preignition and detonation in forced induction systems or in high compression N/A applications. A stock Yaris engine is neither of these.

Ok thanks. Idk it feel like it runs better? I have intake header exhaust

09cptn · 11-30-2013, 10:48 PM

Placebo effect maybe?

Jason@SportsCar · 12-01-2013, 12:05 AM

Quote:

Originally Posted by ivanstepul

mixing 110 racing gas with vpower . It is harmful to the engine and if not what is the right ratio? I have mixed 3 gallons 93vpower gas with 1/9 gallon race gas.

Is that 110 leaded? If it is you will be shortening the life of your catalytic convert and risk fouling your plugs. There is no reason to run that on an n/a motor with stock compression. The car was built for 87, 91 is more than enough even for track conditions.

fnkngrv · 12-01-2013, 12:55 PM

^ +1

I had considered running C16 in my car this past Labor Day Weekend for the speed trials, but after careful research it was proven that even with a high flow cat setup like mine I could easily plug it up within a couple runs which in the long term would not have been worth it. THERE IS NO REASON IN A STOCK 1NZ OR OTHER TOYOTA MOTOR IN TODAY'S VEHICLES TO RUN OVER 87 WITHOUT FORCED INDUCTION.

ivanstepul · 12-01-2013, 11:37 PM

where did u turbo your cars? how much does it cost?

willygoodness · 12-02-2013, 03:31 AM

in Aus. the lowest octane we can buy is 91. using 98 i get around 90-110km more to a tank

UberSilver · 12-02-2013, 01:02 PM

Leaded race fuel will gum up your engine. My stock engine likes 91. If I use 87, it pings like crazy. With 91 it's smooth as silk with little to no pinging.

xnamerxx · 12-02-2013, 02:05 PM

Stock engine shouldn't be pinging with 87, also the motor has a knock sensor.

On my car with a piggyback and a custom header and exhaust I don't have any knock or detonation issues even after an hour on track. Anything over 91 is definitely a waste on a stock NA setup.

Jason@SportsCar · 12-02-2013, 03:30 PM

Quote:

Originally Posted by willygoodness

in Aus. the lowest octane we can buy is 91. using 98 i get around 90-110km more to a tank

The ratings are done differently around the world. Your 91 is going to be similar to our 87. In the US we typically see the (R+M)/2 spec listed, your number is based only the RON, which gives you a number 4-5 points higher for the same grade of fuel.

willygoodness · 12-11-2013, 06:01 AM

^^ ahh cool, good to know

11-23-2013, 07:50 PM	#1
ivanstepul Drives: 08 hatchback Join Date: Jun 2011 Location: chicago Posts: 85	Race gas mixture! mixing 110 racing gas with vpower . It is harmful to the engine and if not what is the right ratio? I have mixed 3 gallons 93vpower gas with 1/9 gallon race gas. Last edited by ivanstepul; 11-24-2013 at 11:27 PM.

11-29-2013, 12:16 AM	#2
juicyjosh Drives: 2012 Yaris SE MT Join Date: Dec 2012 Location: San Francisco Posts: 57	Don't believe the rice. It's not harmful to the engine, and the best ratio is 0:1. If your engine is stock, the ecu has been mapped by Toyota to run on regular American gas. Simply putting 110 octane into a stock Yaris engine doesn't turn it into a racing engine. Instead, compared to regular gasoline, the stock Yaris engine with "110 octane" in the tank will produce less power due to the fewer number of high energy molecules per volume injected into the engine, per the chemical composition of the fuel designated as "110 octane." Less power per volume of fuel means that more "110 octane" fuel is required by the engine to produce the same power and torque produced by a comparatively lesser volume of 87 gas, so fuel mileage is also reduced. High(er) octane fuel is used to help prevent preignition and detonation in forced induction systems or in high compression N/A applications. A stock Yaris engine is neither of these.

11-29-2013, 10:12 AM	#3
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	^ what he said __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

11-30-2013, 10:48 PM	#5
09cptn Drives: 2010 Yaris Sedan Join Date: Mar 2013 Location: Los Angeles, CA Posts: 25	Placebo effect maybe? __________________ The Yaris: 2010 Yaris base model. 50% tint up front and 35% in the rear, Konig Lace wheels with homemade Toyota center caps on Yoko S.drives, Curt hitch. Offroad: 2004 Jeep Wrangler lifted on 33's

12-01-2013, 12:55 PM	#7
fnkngrv Mr. 155 and climbing View User's Garage Drives: Seriously Modded 07 Sedan Join Date: Jun 2006 Location: In The Hotbox Posts: 4,742	^ +1 I had considered running C16 in my car this past Labor Day Weekend for the speed trials, but after careful research it was proven that even with a high flow cat setup like mine I could easily plug it up within a couple runs which in the long term would not have been worth it. THERE IS NO REASON IN A STOCK 1NZ OR OTHER TOYOTA MOTOR IN TODAY'S VEHICLES TO RUN OVER 87 WITHOUT FORCED INDUCTION. __________________ Team Tiamat Racing on Facebook Youtube Channel: Team Tiamat Racing *Class record holder in Land Speed @ 154.5mph for 1.5 mile and 145.5mph in the mile in the F (2.016 to 3.014 L), G (1.524 to 2.015 L), and H (1.016 to 1.523 L) classes.*

12-01-2013, 11:37 PM	#8
ivanstepul Drives: 08 hatchback Join Date: Jun 2011 Location: chicago Posts: 85	where did u turbo your cars? how much does it cost?

12-02-2013, 03:31 AM	#9
willygoodness Drives: 09 yaris hb Join Date: Jul 2010 Location: qld Posts: 93	in Aus. the lowest octane we can buy is 91. using 98 i get around 90-110km more to a tank

12-02-2013, 01:02 PM	#10
UberSilver Drives: 08Yaris2D, 88LandCruiser. Join Date: Jan 2013 Location: Alameda,Ca. Posts: 476	Leaded race fuel will gum up your engine. My stock engine likes 91. If I use 87, it pings like crazy. With 91 it's smooth as silk with little to no pinging. __________________ Give a man a fish, and he'll eat for a day. Sell a man a fish, and you'll both eat for a day.

12-02-2013, 02:05 PM	#11
xnamerxx 0-60 in slow Drives: light blue liftback Join Date: Aug 2009 Location: so cal Posts: 926	Stock engine shouldn't be pinging with 87, also the motor has a knock sensor. On my car with a piggyback and a custom header and exhaust I don't have any knock or detonation issues even after an hour on track. Anything over 91 is definitely a waste on a stock NA setup.

12-11-2013, 06:01 AM	#13
willygoodness Drives: 09 yaris hb Join Date: Jul 2010 Location: qld Posts: 93	^^ ahh cool, good to know

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Stay tuned	Jason@SportsCar	Tracking, Racing, Auto-X Forum	1320	11-21-2021 10:03 PM
Fuel Economy	swng	Fuel Economy Forum	2089	01-23-2015 06:41 PM
Natural Gas Transportation - Why Not?	Kal-El	Off-topic / Other Cars / Everything else Discussions	1	03-20-2011 01:12 PM
Yaris In Forza 3	whooppee777	Off-topic / Other Cars / Everything else Discussions	61	04-03-2010 04:36 PM
Free gas for any vehicle.	ketel0ne	General Yaris / Vitz Discussion	4	09-19-2006 08:07 AM