What oil is best? and what ratio?

[mdavlee]

No need for high octane there?

I don't think so. I'd like to find some good fuel for racing but funny fuels are a pain to set up

 

[bwalker]

I think tree monkey figured some in the 8-8.5:1

Kudos to TM.

 

[jmssaws]

He said compression ratio. Have you actually figured out the compression ratios for the saws you build?

I know he did that's why I said it can't be very much.
I've never figured it and have never even thought about it.
The saws I build now only have 20 or 30lb over stock.

Even on a high compression saw the ratio wouldn't be very high,not high enough for high octane gas.

 

[bwalker]

I don't think so. I'd like to find some good fuel for racing but funny fuels are a pain to set up

Look at Trac tec or the VP fuels made for two strokes, especially the ones with MTBE in them.

 

[bwalker]

I know he did that's why I said it can't be very much.
I've never figured it and have never even thought about it.
The saws I build now only have 20 or 30lb over stock.

Even on a high compression saw the ratio wouldn't be very high,not high enough for high octane gas.

Thanks for the honest reply.

 

[mdavlee]

Look at Trac tec or the VP fuels made for two strokes, especially the ones with MTBE in them.

Nearest VP dealer is 90 miles away now. Finding anything over normal pump gas is real hard besides methanol from the drag racers. If VP sells it by the 5 gallon pail I may try some when I order some M5.

 

[bwalker]

http://www.cpchem.com/bl/specchem/en-us/Pages/TrackTekFuelsApplications.aspx
TT100ULE and TT100ULE would both be good.

 

[bwalker]

Nearest VP dealer is 90 miles away now. Finding anything over normal pump gas is real hard besides methanol from the drag racers. If VP sells it by the 5 gallon pail I may try some when I order some M5.

VP and Track Tech both sell from the 5 gallon pail.
Race gas from a pump is a complete joke as all the low end components boil off in the tanks and are vented off. This fact alone makes them suck in a two stroke.
If you do try an MTBE doped fuel be aware previous carb tuning will be very lean.

 

[mdavlee]

VP and Track Tech both sell from the 5 gallon pail.
Race gas from a pump is a complete joke as all the low end components boil off in the tanks and are vented off. This fact alone makes them suck in a two stroke.
If you do try an MTBE doped fuel be aware previous carb tuning will be very lean.

The hazmat fees is what really sucks. The VP stuff is around $120 delivered.

 

[CR888]

Whether hi octane or low what you want in gas is a good RVP (reed vapour pressure). Old stale gas will have a low rvp as its volatility diminishes. Shaking gas will release its vapour pressure that's why it behaves like a soda bottle giving off a tshhhh when opening your mix container after a good shake. Unleaded gas leaves the refinery with an RVP ratingof about 6. The sooner it gets undisturbed into your hands the better and more power it will make. You would rather have your gas station first stop on the truckies delivery route as the more the gas it disturbed the less the volatile it will be when it enters ya 2T.

 

[jake wells]

gas these days is s h i t anyways compared to years ago no matter how fresh it is.

 

[KenJax Tree]

Aren't most things?

 

[Nitehawk55]

You guys think too much , go use your saws cutting wood and enjoy it .

 

[jake wells]

You guys think too much , go use your saws cutting wood and enjoy it .

no thanks.

 

[bwalker]

Whether hi octane or low what you want in gas is a good RVP (reed vapour pressure). Old stale gas will have a low rvp as its volatility diminishes. Shaking gas will release its vapour pressure that's why it behaves like a soda bottle giving off a tshhhh when opening your mix container after a good shake. Unleaded gas leaves the refinery with an RVP ratingof about 6. The sooner it gets undisturbed into your hands the better and more power it will make. You would rather have your gas station first stop on the truckies delivery route as the more the gas it disturbed the less the volatile it will be when it enters ya 2T.

Which is one of the reasons race fuel from the pump isn't that great an idea. Especially so given many times it's coming out of above ground tanks vented to atmosphere.

 

[bikemike]

Amsoil Saber 100.1 mixed at 50.1 I have not opened it yet I am a 40.1 mix with echo oil person but I might try the 50.1 and maybe 100.1 in something I don't care about

 

[bikemike]

Aren't most things?

True. If a ford truck starts on fire the body melts away from the frame

 

[Fairways_and_Greens]

@Redbull661

Lots of great stuff. Based on what you've tested so far, what are the standings? And what's left to test?

 

[Lightning Performance]

From a thread on my site. He also has other stuff posted about using e85 on his site.

Just what he has to say about it and the Canada gases.

[quote author=EHP link=topic=4980.msg60152#msg60152 date=1438733735]
OK this is just me ok, On my autotune saws I much prefer the 10% ethanol high test gas over non ethanol gas , reason is if you take a saw that runs a carb and set it at as close to perfect for max power that you can then switch to gas with ethanol in it you will find the ethanol fuel burns abit leaner than non ethanol gas , In the autotune saws that run in my air they all run rich so the ethanol gas helps make them run leaner . If you are only after horsepower and given the choice of high test non ethanol pump gas or E85 fuel , No contest the E85 produces alot more power but you have to do lots of carb work to pump enough fuel to the motor , Its about half way between gas and 12026 alcohol/nitro fuel as far as the amount of fuel you need to burn to make power

[/QUOTE]

Test this.

Read his last two sentences again for all those who do not understand why a hated fuel can make more power. I have never been able to pound that into the heads of half the racers I've met. They just can not grasp it. They will insist that gas will make more power in the same displacement. Plus they miss all the other added benefits.

Try this sick mix for added power. Be warned your conventional (gas) fuel system will hate you if you leave it soak.

A gallon of E-85 mixed with walmart supertec 50-1 then add more (oil, your choice) I chose synthetic to get to 35-1, jump up the carb about a third in size. More ignition timing helps. Promotes smiles every time
Some go boom. Your results may vary lol

Is this the right oil and ratio?

 

[junkman]

I just like to go fast .