UK Karting - Notice Board (2-Stroke Karting) : Re: X30 Optimised fuel mix

Notice Board (2-Stroke Karting)

Re: X30 Optimised fuel mix
Posted by 'SimonS' on 11 Nov 2014 @ 09:28

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SimonSJoined: December 2004
Total Posts: 4
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Since it is the same barrel and compression as a Blue, you ought to know by now!

You are not going to gain any advantage from running higher octane fuel in one of these engines and a semi-synthetic oil ( synthetic for lubricity, castor for film strength) is probably the best, though you might go for a fully synthetic oil if the extra hundredth of a second is worth it.

Most of the semi-synthetics can be run down to 2% but that's going to depend on weather and track conditions. My oil mix goes up in wet weather!

Of course, with any oil containing castor, you need to clean the carb shortly after use to prevent the castor forming a varnish.

If you use a castor oil and leave the carb for any length of time, you may need to flush out the jets, which is a given procedure in the Tillotson manual, but removing the welch plug covering the jets is not permitted in some classes as it is classed as modification.

However, like so many things in karting, it isn't that simple. From the old days, or on the American boards, there is a lot of information about modifying the jet sizes with a drill. But to do this requires the removal of the welch plug, so if the welch plug has been replaced, it may be assumed the carb has been modified.

A practical solution to a problem that is difficult to detect for the average scrutineer at the trackside.

Message Thread:

X30 Optimised fuel mix by 'goman' (10 Nov 2014 @ 14:09)

Re: X30 Optimised fuel mix by 'BanzaiBoy' (10 Nov 2014 @ 14:22)

Re: X30 Optimised fuel mix by 'SimonS' << You are here!

Re: X30 Optimised fuel mix by 'goman' (11 Nov 2014 @ 11:28)

Re: X30 Optimised fuel mix by 'BanzaiBoy' (11 Nov 2014 @ 21:46)

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