Octane Calculation Method

[Hog Head]

What method is used to calculate the octane of Thai petrol?

RON

MON

Average of the above?

I am setting the compression ratio of my 2332cc VW engine and need to know how the AKI is claculated

[katabeachbum]

RON, as in Europe

[Hog Head]

That is bad news for me and my dynamic compression ratio calc

95 RON = 91 AKI or an average of RON + MON as used in the USA

[katabeachbum]

That is bad news for me and my dynamic compression ratio calc

95 RON = 91 AKI or an average of RON + MON as used in the USA

fuel is crap in LOS

Modern environmentalfriendly car engines need 98 RON, not available in LOS

and 95 RON is not available in LOS without 10% Ethanol blended in, Gasohol E10

Octane booster or buying barrels with 107? RON at 40-45? baht/litre

Most bigbikes have the same problem now

[Kwasaki]

That is bad news for me and my dynamic compression ratio calc

95 RON = 91 AKI or an average of RON + MON as used in the USA

fuel is crap in LOS

Modern environmentalfriendly car engines need 98 RON, not available in LOS

and 95 RON is not available in LOS without 10% Ethanol blended in, Gasohol E10

Octane booster or buying barrels with 107? RON at 40-45? baht/litre

Most bigbikes have the same problem now

I thought that Shell fuel provided higher octanes fuels in Thailand more expensive though ??????

[katabeachbum]

That is bad news for me and my dynamic compression ratio calc

95 RON = 91 AKI or an average of RON + MON as used in the USA

fuel is crap in LOS

Modern environmentalfriendly car engines need 98 RON, not available in LOS

and 95 RON is not available in LOS without 10% Ethanol blended in, Gasohol E10

Octane booster or buying barrels with 107? RON at 40-45? baht/litre

Most bigbikes have the same problem now

I thought that Shell fuel provided higher octanes fuels in Thailand more expensive though ??????

Even Shells 95 V Power is now blended with Ethanol, but as I recall less than 10 %.

[Hog Head]

I have recalculated the dynamic compression ratio to work on this crappy fuel. Not happy, but this is all I can do until E-20 becomes more readily available

Bring on E-20 or better yet E-85 and then I can really increase the compression and suck back even more of it.

At the same time I also want Shell V-Power petrol back for my bikes but that is a politically driven impossibility in the LOS