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Engine lubrication Pathfinder - what oil and in w


Forum Tech corner Engine lubrication Pathfinder - what oil and in w




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František
2016-08-10 18:12:13

The two-stroke engine is lubricated by a mixture of gasoline engine oil. Motor sucked into the space below the piston (using the vacuum) spray the mixture , wherein the gas with the air and evaporates the oil condenses on components of the engine ( the bearing , the inner surface of the cylinder , piston ... ) . Lubrication is therefore ensured the circulation of the mixture in the engine - so called " circulating lubrication " . It follows that that the motor is properly lubricated is imperative that there circulate the mixture . Inappropriate , therefore, mainly engine braking when no gas going downhill . In this case, the engine is very little risk lubricates and its seizure. When it but sometimes the engine braking is carried out , at least at times , squeeze the clutch and engine idle " protůrujte " .

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František
2016-08-10 18:13:32

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mixing ratio

The mixing ratio is given by the manufacturer. For the pioneers , it is the standard ratio 1:33 , for the running of 1:25. This ratio is determined not so much lower quality oils that time , as more engine designs . Upper connecting rod bearing is composed of bronze bushing and this must be done more than perhaps more recent needle bearings .

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František
2016-08-10 18:15:12

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Mineral oils X synthetic and semisynthetic oils

Someone thinks he buys quality ( expensive ) oil, so does the engine just as well . It is true that quality synthetic and semi-synthetic oils lubricate better , but it is wrong to reduce their use and mixing ratio . Synthetic oils can dirty roller perhaps even a ratio of 1: 100 , but the bearings and bronze bushing ( " cuff " ) please do not smutch simply , these are not built on a small amount ( even high-quality ) oils, but a larger amount . Some oil " homeopathic " will not help them much . So must the cylinder and piston rings last, but you have to change the bearings and give Reuse Crank , which becomes much more expensive than cut.

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František
2016-08-10 18:16:20

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Undeniable advantage of precious oils is their good combustion and therefore small clogging the engine . In the combustion chamber ( piston and head) is produced much less of carbon, or there does not at all and in výfucích also do not form deposits.

Beware ! Never cross from mineral oils to better and more expensive semisynthetic or synthetic oils . Further , in this case the poor , the characteristics is that these oil deposits in engine not only does not , but rather it dissolves . The so-called carbon, which is deposited in the combustion chamber is actually like a stone and during dissolution from it slowly becomes sand which cylinder slowly blackmails - thereby quickly reduce engine life.

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František
2016-08-10 18:17:59

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oil M2T

Jawa 50 engines were originally designed for oil M6A , which is a classic four-stroke motor oil for automotive engines . M2T is designed specifically for two-stroke engines , well it burns well and lubricates. Basically, even if you do pioneer cheapest oil - M2T , so you indulge more oil than has been built. The downside M2T oil deposits but are generated by the not quite perfect burn . These deposits (carbon ) need a few thousand km remove - " dekarbonovat " .

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František
2016-08-10 18:18:52

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Although it is the lubricating effect of the oil quite good , I would not recommend changing the mixing ratio to be 1:33 .

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František
2016-08-10 18:23:12

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The most commonly used is the " quality " of mineral oil Mogul TSF . This oil is very widespread and is even recommended brand Jawa directly . Has less smoke than M2T , lubricates better , and so does not clog the combustion chamber and the exhaust system . Another advantage is its blue color - certainly can not be mis- canisters and diluted with pure gasoline. But it is quite expensive , that is mineral oil , worth quite Further enhanced oil are marked . Castrol , but they are unnecessarily overpriced (in all its quality classes ) . From my own experience I can recommend a mineral oil Shell Advance SX2 . Parameters corresponds Mogul TSF , maybe even a little better .

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František
2016-08-10 18:25:00

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Another even better , but unfortunately little widespread and harder to come by is a semi-synthetic oil Motul 510. Its price is slightly higher than the price of minerals is practically the best thing you can indulge Jawa ( anything more expensive is already wasted investment ) .

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František
2016-08-10 18:26:08

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Finally, I added that mixing oil using any of the above better quality oils can reduce to about 1:40, with the risk of worse lubrication of plain bronze bearings and 1:50 .

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František
2016-08-10 18:27:42

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Oils Foto.


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