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Breaking in an engine without a dyno.
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<blockquote data-quote="wawazat" data-source="post: 3936624" data-attributes="member: 35603"><p>I dont really pressure up per se, but I do have an electric external oil pump that I use to to push oil through the engine so I can verify everything gets to where it needs to go. </p><p></p><p>For my last built engine, I got some cheap oil that I cycled through for 30min or so as I slowly rotated the crank and watched flow up through the top of the heads. Let it drain for a couple of hours, dumped it and put in the break in oil and did the same. to make sure everything was good to go for first start up.</p><p></p><p>I typically listen to whatever my engine builder tells me so the last one was broken in on BR40 with an oil change at 100 miles, 500 miles, 1000 miles. I sent a sample from each to Blackstone to monitor for metals and switched to my preferred synthetic at 1000 miles. The first 1000 miles were driven on 100% gasoline to minimize the risk of solvents contaminating the oil. 1000 miles on synthetic gave me a clean bill of health on the oil analysis so I topped it off with ethanol and let her eat. She got fresh oil and filter every 1500 miles after that due to living only on 70% ethanol and higher. Good thing the 8mpg made the oil change schedule seem cheap hahaha.</p></blockquote><p></p>
[QUOTE="wawazat, post: 3936624, member: 35603"] I dont really pressure up per se, but I do have an electric external oil pump that I use to to push oil through the engine so I can verify everything gets to where it needs to go. For my last built engine, I got some cheap oil that I cycled through for 30min or so as I slowly rotated the crank and watched flow up through the top of the heads. Let it drain for a couple of hours, dumped it and put in the break in oil and did the same. to make sure everything was good to go for first start up. I typically listen to whatever my engine builder tells me so the last one was broken in on BR40 with an oil change at 100 miles, 500 miles, 1000 miles. I sent a sample from each to Blackstone to monitor for metals and switched to my preferred synthetic at 1000 miles. The first 1000 miles were driven on 100% gasoline to minimize the risk of solvents contaminating the oil. 1000 miles on synthetic gave me a clean bill of health on the oil analysis so I topped it off with ethanol and let her eat. She got fresh oil and filter every 1500 miles after that due to living only on 70% ethanol and higher. Good thing the 8mpg made the oil change schedule seem cheap hahaha. [/QUOTE]
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