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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Elephants trunk
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<blockquote data-quote="timetraveller" data-source="post: 29217" data-attributes="member: 456"><p>I'm not sure that you are correct MartynG. Do you really want to use energy to suck air into an engine and then use more energy to expel it? Is not the problem that leakage past the piston rings can increase the pressure in the crank case which is what can cause engine oil leaks. If the pistons are descending against a partial vacuum then it seems to me that less energy will be required than the same pistons descending against full atmospheric pressure. Having read Mr Bunn's advertising literature I am still not sure how it works so possibly I have something wrong but sucking air in, which might be contaminated with road grit etc, only to blow it out again does not seem like good practice. We need more explanation from yourself as to exactly what is happening before we can decide whether this is a good mod or not. Over to you.</p></blockquote><p></p>
[QUOTE="timetraveller, post: 29217, member: 456"] I'm not sure that you are correct MartynG. Do you really want to use energy to suck air into an engine and then use more energy to expel it? Is not the problem that leakage past the piston rings can increase the pressure in the crank case which is what can cause engine oil leaks. If the pistons are descending against a partial vacuum then it seems to me that less energy will be required than the same pistons descending against full atmospheric pressure. Having read Mr Bunn's advertising literature I am still not sure how it works so possibly I have something wrong but sucking air in, which might be contaminated with road grit etc, only to blow it out again does not seem like good practice. We need more explanation from yourself as to exactly what is happening before we can decide whether this is a good mod or not. Over to you. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Elephants trunk
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