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Old 10 Nov 2011, 02:31 am
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Default Motor for a 1991 prelude si? one is black and the other is blue.?

I got a Prelude auto 1991 si, it has a bad bearing but it came with another b20a motor. Both are dohc b20a's but one is another color.















What should I do to diagnose the motor and see if it has any problems. Check compression? What gaskets should I change out? Basically what should I do to this motor before I drop it into the car to see if it has any problems?
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Old 10 Nov 2011, 02:46 am
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got a Prelude auto 1991 si, it has a bad bearing but it came with another b20a motor. Both are dohc b20a's but one is another color.















What should I do to diagnose the motor and see if it has any problems. Check compression? What gaskets should I change out? Basically what should I do to this motor before I drop it into the car to see if it has any problems?
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Old 10 Nov 2011, 03:02 am
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First use a socket and brake over bar to hand turn the engine over, one or two full turns, if it turns smooth then you will want to put in new front and rear main seals and maybe a oil pan gasket. Things that will be hard to get to with the engine in the car. To check for problems you really need to run it, but without the stuff to do that that's hard!
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