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Old 02-20-2010, 05:57 AM
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Default reverse rotation engine

i have a 502 that the customer says it is a reverse rotation. was wondering if all you have to do is change the cam and the starter also the distributor gear to turn it back to standard rotation. will be pulling off timing cover today to verify.

Last edited by 88scarab; 02-20-2010 at 06:09 AM.
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Old 02-20-2010, 06:52 AM
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Don't forget to change rear crankshaft seal
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Old 02-20-2010, 08:02 AM
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also, some engines had the pistons reversed as well....
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Old 02-20-2010, 08:49 AM
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and the timing chain cover seal.
I wouldn't think the gear on the dist would have to be changed. In most RR motors the cam still spins the right way it's just the crank that spin "backward"
Also if the motor has been run you may have to have the crank resurfaced due to the scales on the metal would be going the wrong way.

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Old 02-20-2010, 09:35 AM
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Oil pump too? Had friend with the same problem in a Chris Craft Roamer and I think he had to change the oil pump.
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Old 02-20-2010, 10:27 AM
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ok i was just hoping to swap a few things and then ready to go so i mite as well rebuild this thing and i thought 502s never came reverse rotation and i believe its a gen5
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Old 02-20-2010, 10:59 AM
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Have you turned the starter over to verify its a reverse rotation????
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Old 02-20-2010, 11:33 AM
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oil pump should be the same
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Old 02-20-2010, 11:50 AM
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i have not im going to look at it today
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Old 02-20-2010, 02:00 PM
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Originally Posted by f_inscreenname
oil pump should be the same

You are correct, I spoke to soon
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