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2005 38 lightning low top speed.

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2005 38 lightning low top speed.

Old 07-16-2018, 03:46 PM
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This evening I have checked ratio and I have 1,50.
Also messured Toe in and that the trim indicator is synchronized between starboard and port.
next thing will be to try another prop kit.
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Old 07-16-2018, 04:19 PM
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something is wrong with starboard engine port engine is carrying it
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Old 07-16-2018, 04:23 PM
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Originally Posted by 47 lightning
something is wrong with starboard engine port engine is carrying it
my thoughts starts going that way also.
Mayby compresson and leakdown test on that tomorrow
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Old 07-17-2018, 09:07 AM
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I had the exact same boat with exact same setup. Ran 88 all day long. The 525's should turn 5300 easy with 32P Bravo 1's. The fact that the starboard is only turning 5000 is definitely an indicator of something wrong. Here's what I'd look at:

- compression / leakdown test
- fuel pressure (should be around 40-43 psi)
- fuel injectors
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Old 07-17-2018, 03:49 PM
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145psi all over
plugs looks rich.
Injektors was sent away 2 month ago.
Only checkd fuel pressure at idle. Was 43 psi at idle.
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Old 07-17-2018, 08:12 PM
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valve springs will do it too broken outer big spring will work great till about 3500rpm then valves will start to float because of lack of spring pressure take valve covers off that motor and look for broken outer big springs but before that check if motors run even rpm till about 3300rpm
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Old 07-17-2018, 08:45 PM
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Screwed up props will mess with it also. Have them
checked.

May not be them but the easiest and cheap to have them looked at.
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Old 07-30-2018, 09:05 PM
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Have the same boat. Bet your engines are getting tired. My speed is down too along with compression. Should check yours.
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Old 07-30-2018, 11:26 PM
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I have 145psi all over. Going to test anorher set of props this or next week. If that doesn’t make any difference. It might be the engines.
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Old 08-01-2018, 08:04 AM
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145 psi sounds a little low - my 525s with 200 hours were about 160 cold.
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