7,5 mm Element design for high performance engine
7,5 mm Element design for high performance engine
(03-29-2012, 11:59 PM)tomniknot more fuel, faster injection or how you say it, when running mynäs 7mm on old vs new model cam you can hear sharper noise from newer model,(03-29-2012, 04:46 PM)dieselmerc And I am not talking aboat regrinding cams, I am talking aboat that pumps with rs number over 172 has a "sharper" cam then the older, which will give shorter injection time and more power, I'm with you there that shorter injection time is wanted to burn it efficientely. You can clearely hear sharper knocking from pump (7mm) with newer camshaft vs older
given the same element diameter, can you explain how different cams can deliver different amount of fuel?
Total stroke is the same, delivery takes place while the plunger is passing the "working stroke". Volume of delivery is plunger area x stroke.
Could be the case that some dynamic things happen but how?
The only possible difference of the cams can be different plunger speed over stroke. But again, how can this deliver more fuel?
Harder knocking from shorter injection duration? If this is true I could only drive with ear plugs but my engine is quite smooth, except cold nailing for some seconds.
Tom
(03-29-2012, 11:59 PM)tomniknot more fuel, faster injection or how you say it, when running mynäs 7mm on old vs new model cam you can hear sharper noise from newer model,(03-29-2012, 04:46 PM)dieselmerc And I am not talking aboat regrinding cams, I am talking aboat that pumps with rs number over 172 has a "sharper" cam then the older, which will give shorter injection time and more power, I'm with you there that shorter injection time is wanted to burn it efficientely. You can clearely hear sharper knocking from pump (7mm) with newer camshaft vs older
given the same element diameter, can you explain how different cams can deliver different amount of fuel?
Total stroke is the same, delivery takes place while the plunger is passing the "working stroke". Volume of delivery is plunger area x stroke.
Could be the case that some dynamic things happen but how?
The only possible difference of the cams can be different plunger speed over stroke. But again, how can this deliver more fuel?
Harder knocking from shorter injection duration? If this is true I could only drive with ear plugs but my engine is quite smooth, except cold nailing for some seconds.
Tom