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Engines / Re: Question about Blow-by
« on: October 23, 2008, 11:30:15 PM »
Thanks for the link Steve.
For RAB: the engine is connected to an 8kw gen head and has never been loaded less than 6kw except for the few seconds it takes to for the oil pressure to rise, and the two or three minutes it takes for water temp to get to around 160f as the load is gradually raised to full. I run it at around 185-190f, thermostaticaly controled by a 12v automotive fan monted on the radiator. It had .2 (2/10ths) hours on it when I got it. Most running has been just below the level at where the 60A main breaker trips. Got tired of resetting it so I dropped the load down to an estimated 6850-7250 watts. That estimate is from the data plates on the heaters and hair dryers I've been using for testing and break-in. But, if what Steve says about modern oils is true, there still could be some glazing on the walls anyway.
The engine manual and the data plate on the engine say it is rated for 18hp @ 2200rpm. Would that make a difference as to how much load should be put on it at 1800rpm? Do you think that a 6-8kw load would be sufficient to prevent glazing and provide and adequate load for break-in?
For RAB: the engine is connected to an 8kw gen head and has never been loaded less than 6kw except for the few seconds it takes to for the oil pressure to rise, and the two or three minutes it takes for water temp to get to around 160f as the load is gradually raised to full. I run it at around 185-190f, thermostaticaly controled by a 12v automotive fan monted on the radiator. It had .2 (2/10ths) hours on it when I got it. Most running has been just below the level at where the 60A main breaker trips. Got tired of resetting it so I dropped the load down to an estimated 6850-7250 watts. That estimate is from the data plates on the heaters and hair dryers I've been using for testing and break-in. But, if what Steve says about modern oils is true, there still could be some glazing on the walls anyway.
The engine manual and the data plate on the engine say it is rated for 18hp @ 2200rpm. Would that make a difference as to how much load should be put on it at 1800rpm? Do you think that a 6-8kw load would be sufficient to prevent glazing and provide and adequate load for break-in?