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octane boost versus 2 gallons of race gas

T

TIM

Free Member
I have the rkt drop kit for my 2012 pro. I was told I should run a couple of gallons of race gas in a full tank of fuel. Iam riding 3000 to 6000 feet. I was wondering if adding octane boost to premium fuel would do the trick? or should I do the couple of gallons of race gas to a tank of premium.

basically trying to find an easier solution to always having to have race gas.

thanks
tim
 
TIM said:
I have the rkt drop kit for my 2012 pro. I was told I should run a couple of gallons of race gas in a full tank of fuel. Iam riding 3000 to 6000 feet. I was wondering if adding octane boost to premium fuel would do the trick? or should I do the couple of gallons of race gas to a tank of premium.

basically trying to find an easier solution to always having to have race gas.

thanks
tim
Click to expand...

Octane boost will only give you less than 92 if your adding it to 91, where's as a couple gallons of 112 will get you to over 95 so I guess it depends what you need for a octane rating really.
 
I don't see why you would need put any thing other than premium gas in with just a drop in kit. Do you have a head or any thing else?
 
I am not sold on octane boosters. However the torco is probably one of the best available. If race fuel is not easy to come by in your area you might consider AVGAS (LL 100)from your local airport . It's a bit less expensive and should do the job. Also the LL stand for low lead where most common race gas is leaded . Probably not a big deal but something else to consider. Av stores exceptionally well too.
 
I have been running Klotz octane booster in my sled for years now cause i have to run the higher elevation heads on my rmk for it to run correctly in lower elevations and carrying race fuel around is a pain in the butt and more expensive. I dont have the bottle on me rite now but basically i think its 4 octane per 2 ounces of octane booster so if i dump in 8 gallons of gas i throw a bottle in for 10 bucks and boom 95-96 octane and it smells great i tried the torco and it didn't feel as fast and it didn't smell as good as the klotz so i stuck with klotz
 
Slow this freaking thread down, way to many directions being thrown at you here tim.
First of all don't replace your head, your head is part of the drop in kit, its a matched set of pistons and head for the "Drop" that gives it power, you cant mix and match parts of the drop in kit.
second if you have a 12 pro RMK and a Drop in kit, you do not need to run race gas, I don't know why your mechanic is telling you that but that kit does not require any more octane than you will find at your local gas pump, that's a major selling point of the kit and I can go to the website and read it my self.
 
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J

All depends on what head he has from Kelsey. 13.1 is fine for 3-6 on 91, but 13.5 would be tight at 6, and too high at 3. I have run his kits on a pro, and different domes. Torco is unleaded, Klotz is leaded. I've run them both. They will get you a couple of points, but you may need a race mix depending on what you have. Which means - what do you have? Most importantly, what does RKT say to run at precisely what elevations? Not sure who or why a head was spec'ed for you that needed non-pump gas, especially if you are not into the engine thing (it was great for you to let us know that, too). Honestly, the advice to drop your compression to where you can run pump at your lowest riding elevation was good - you will leave alittle hp on the table, but that's what riding pump gas sleds are about. Race mix isn't for everyone. Also, your clutching is head dependent, I'm sure Kelsey told you that, too. Changes in comp means weight changes, also. Finally, the pro has a deto sensor, as you may soon find out. It works, but it's not bulletproof - too much and you'll still do permanent damage. Talk with Kelsey, give him the whole story, get the facts clear. He's always been very clear when I've talked with him about the characteristics of his gear. Your pro will rip, and you'll be smilin and not wrenching on a deto sled. Good luck.
 
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I can only get 88 non ethanol here in Salt Lake City. I need to run 91 with my Northstar kit. I have tried quite a few of the "boosters" and TORCO is by far the best IMHO. It is concentrated race fuel, cost about $20/$21 a quart. I use 12 oz per 10 gallons of gas to get 91. That is about $7 a tank. Easy to carry and use. I also used TORCO with my impulse turbo on a previous sled and never had a single issue with it. A heck of a lot easier to use than hauling race gas around. When we sled into our cabin (5 miles), we just haul a lot of 5 gallon containers of 88. My wife and daughters sleds use 88, all the others use 91, so we just add the TORCO and have happy running machines all around.
 
I installed Tim's kit last year and it has the 13.1 domes which as stated above should be fine to run with pump gas from 3-6. However, when "stacking" this with the slp stage 2 kit a little race fuel is required to keep the DET sensor happy at lower elevations
 
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m8magicandmystery said:
torco..nos...and lucas bring 91 octane to 97/98 easy ( they raise 60 points (6 octane) the cheap boosters only raise 10 points)...I used nos for years and now switched to torco..

http://volvospeed.com/Review/misc_performance_volvo_reviews/octane_bosters_general.html

click on each pic on link
Click to expand...

Says one bottle to ten gallons 96.6 mon rating from 93 octane not 91-97/98

"When mixed in a 100:1 ratio of fuel to additive the Lucas Octane Boosted averaged a RON reading of 101.4 and a MON rating of 91.8. Giving Lucas in a concentration of 100:1 an AKI of 96.6 when mixed with 93 pump fuel. With a ratio of 100:1 this make Lucas the most concentrated additive.

When used an a concentration of 50:1 103.1 RON was achieved with a MON of 93.5 giving it a AKI of 98.4.

To date Lucas octane booster is the only booster tested that had significant results with only one bottle in the tank. One bottle is enough to make 10 gallons of 96.6 octane out of 93. "

they don't give a mon for the torco but looks like about 95 mixing to highest recommended concentration according to the ****ty chart they have there for ten gallons mixed.
 
Last edited:
Question: Went and looked at Lucas and the bottle said only for 4 stroke engines. Anyone know what's up with that?
 
I noticed the lucas said for 4strokes only as well but I ran it in my pro rmk all last year with zero issues.
 
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Would you rather have claimed "points" or a sure fire product? Dont waste your time or money with octane boosters. They all have their disadvantages and most of them lie. And dont buy anything with lead in it unless you like to buy o2 sensors. Buy higher octane fuel like avgas and mix. Then you will know exactly what AKI your putting into your sled.
 
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