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running in a engine, how long?

By jalbert 15 MAR, 2012

I'm doing the sr20ve (vvl) conversion to my nissan. I'm gana get the engine from Mikes place. I wana know seeing that its a second hand engine, do I have to run it in? Or not? And if I do for how long? And what speed do I drive? And at what rpm do I change? Please help


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  • If its a second hand engine, you dont have to run it in, depends if they have serviced it. If it has been standing for a long time i would open it up and look whats going on inside, but usually they give you some sort of guarantee. You only need to run it in if it has new pistons as it has to conform to the cylinders.

    By justinrs 29 months ago