Reply To: 2004 ZF Transmission Oil Analysis

[Rob Schepis]

Tough to see everything in those photos. Looks like it’s in need of some love as marine age is banging on the door and she’s getting to the point where reversing it is not so easy. Some evidence of rattle can paint touch up but certainly not the worse we’ve seen.

1) That starboard riser is “doomed to fail” . The port may be very well be too. Have you seen this:
https://www.sbmar.com/articles/marine-exhaust-risers-that-are-doomed-to-fail/

2) Those March a/c pumps look like an accident waiting to happen – they are pass through pumps and mounted below the waterline. Between the manifolds and the unsupported hoses you are asking a lot of that single 1/2″ mpt plastic output fitting.

3) Based on the burnt paint and the dark brown color of the compressor and the air piping someone wanted the boat to go faster than it should. Especially on the starboard engine. Have you investigated for accurate tachs and accurate WOT rpm. She appears to have been propped heavy and ran hard.