SBT Jetski Engines, Parts & Accessories

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  1. #1

    Lightbulb Should I replace the top end of my engine or replace the complete short block?

    Replacing a top end should be done when compression becomes weak and engine performance is not up to par - itís a way to freshen up an engine that has a lot of time on it.

    When repairing the top end of an engine, the case should be pressure checked for leaks.
    If there is a leak in the case or through the crank end seals, you will have a lean condition (too much air) that can damage the top end.
    Go through the bottom end to ensure it can handle a new top end without destroying it. Everyone would prefer an easier/less expensive fix, but if you take short cuts on your repair your time and money may be wasted.

    Using a top end kit is not a fix for zero compression in a cylinder or severe scoring to a cylinder. If you have severe damage to a top end, you should replace the entire engine or use a cylinder exchange kit and go through the bottom end as stated.
    Ericka Buczkowski
    SBT

  2. #2
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    Quote Originally Posted by Ericka-SBT View Post
    Replacing a top end should be done when compression becomes weak and engine performance is not up to par - it�s a way to freshen up an engine that has a lot of time on it. When repairing the top end of an engine, the case should be pressure checked for leaks. If there is a leak in the case or through the crank end seals, you will have a lean condition (too much air) that can damage the top end. Go through the bottom end to ensure it can handle a new top end without destroying it. Everyone would prefer an easier/less expensive fix, but if you take short cuts on your repair your time and money may be wasted. Using a top end kit is not a fix for zero compression in a cylinder or severe scoring to a cylinder. If you have severe damage to a top end, you should replace the entire engine or use a cylinder exchange kit and go through the bottom end as stated.
    :) :) :)

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