E85 vs. Meth mixes.
Posted: Mon Aug 13, 2012 9:03 pm
All,
Now that the Flex Fuel strategy is supported it opens up a whole new scope of improvement for performance without a lot of hassle.
I have been a frequent runner of some Meth mixes and it works very well.
However one questions that comes to mind is the following:
E-85 is said to have an octane rating of around 105.
This fuel is awesome on knock limited engines and a lot of performance can be gained from using it.
However over here (Taiwan) it's not avaiable and also in other countries the availability is dropping vs. the past.
I have thought about making a Meth mix to regain the octane that is roughly the same as E-85
The "usual" 20% Meth mix w/ 98 RON isn't enough as it will yield roughly: ((10L * 120 Oct) + (50L * 98 Oct)) / 60L = 101.6 Octane
Some say Meth = 130 Oct. In that case the calculation is: ((10L * 130 Oct) + (50L * 98 Oct)) / 60L = 101.6 Octane = 103.3 Octane.
Still not on PAR with E-85 it seems. I've been thinking of making an approx 40% Meth mix which should work out to:
If Meth = 120 Oct. then ((25L * 120 Oct) + (35L * 98 Oct)) / 60L = 107.16 Octane
Some say Meth = 130 Oct. In that case the calculation is: ((25L * 130 Oct) + (35L * 98 Oct)) / 60L = 101.6 Octane = 111.34 Octane.
Now we're talking! Has anybody tried this? What are the gains. I reckon it should go quite well provided you have plenty of injector!
Now that the Flex Fuel strategy is supported it opens up a whole new scope of improvement for performance without a lot of hassle.
I have been a frequent runner of some Meth mixes and it works very well.
However one questions that comes to mind is the following:
E-85 is said to have an octane rating of around 105.
This fuel is awesome on knock limited engines and a lot of performance can be gained from using it.
However over here (Taiwan) it's not avaiable and also in other countries the availability is dropping vs. the past.
I have thought about making a Meth mix to regain the octane that is roughly the same as E-85
The "usual" 20% Meth mix w/ 98 RON isn't enough as it will yield roughly: ((10L * 120 Oct) + (50L * 98 Oct)) / 60L = 101.6 Octane
Some say Meth = 130 Oct. In that case the calculation is: ((10L * 130 Oct) + (50L * 98 Oct)) / 60L = 101.6 Octane = 103.3 Octane.
Still not on PAR with E-85 it seems. I've been thinking of making an approx 40% Meth mix which should work out to:
If Meth = 120 Oct. then ((25L * 120 Oct) + (35L * 98 Oct)) / 60L = 107.16 Octane
Some say Meth = 130 Oct. In that case the calculation is: ((25L * 130 Oct) + (35L * 98 Oct)) / 60L = 101.6 Octane = 111.34 Octane.
Now we're talking! Has anybody tried this? What are the gains. I reckon it should go quite well provided you have plenty of injector!
