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700 Top End rebuild questions

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Old 11-15-2011, 09:10 AM
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Default 700 Top End rebuild questions

Looking for some true experiance with what I should/need to do with my 700's. I just found out that I have to do the top ends on my motors cause I have 220 hrs. Being told that there is a must 250 top end per mercury. Any thoughts/experiance/help... thanks
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Old 11-15-2011, 09:24 AM
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Give Eddie Young a call.
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Old 11-15-2011, 01:41 PM
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Quote:
Originally Posted by Mykalvballer View Post
Looking for some true experiance with what I should/need to do with my 700's. I just found out that I have to do the top ends on my motors cause I have 220 hrs. Being told that there is a must 250 top end per mercury. Any thoughts/experiance/help... thanks
HAVE 305 HRS ON 700'S JUST DID LEAK DOWN NO ISSUES NEVER HEARD THAT THERE IS A MUST 250HR TOP END PER MERCURY-- HAD NXT DRIVES REBUILT AT 265HRS BUT SO FAR NO ISSUES WITH MOTORS
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Old 11-15-2011, 03:43 PM
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I think Merc., recomends after 400 hrs., top end depending on driver.
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Old 11-16-2011, 02:18 AM
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There is no rebuild or top end refresh schedule from Merc for the 700sci that I am aware of.
If leak down tests are good, then I'd probably just do valve springs to be on the safe side.
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Old 11-16-2011, 11:02 AM
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There is no rebuild or top end refresh schedule from Merc for the 700sci that I am aware of.
If leak down tests are good, then I'd probably just do valve springs to be on the safe side.
And Rocker arms.
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Old 11-16-2011, 12:41 PM
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I think the most important is replacing the roller lifters,rocker arms are usualy okay, valves touched up depending on condition to replace or not,valve springs and head gaskets.IMO But I thought you could go 400 hrs depending how hard your on it.

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Old 11-16-2011, 12:46 PM
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We just upgraded a set with new Cometic head gaskets, upgraded springs and Crowler rocker arms. Found several weak springs and bad rocker arms. 200hrs on motors.

Last edited by BrettM; 11-18-2011 at 10:12 AM.
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Old 11-16-2011, 01:07 PM
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525's need springs and rockers (maybe) at 250 hours and 700's don't?

Does the blower allow that much smaller of a cam?
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Old 11-16-2011, 07:25 PM
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Quote:
Originally Posted by nebraskabaja View Post
We just upgraded a set with new Cosmetic head gaskets, upgraded springs and Crowler rocker arms. Found several weak springs and bad rocker arms. 200hrs on motors.
did you change the lifters? just curios.
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