S
Steven Phillips
Guest
"I experienced a exhaust hose
"I experienced a exhaust hose failure that prompted the replacement of the old wire reinforced hose. What's strange is 30 hours later the new hose also failed. Upon inspection, heat was the obvious culpret. The damaged spot was at the end of the wet elbow. While running the 120 HP Lehman a good flow of sea water ruled out back pressure and poor watering. The elbow was inspected and found to be more corroded on the hot side. The hot side? During trouble shooting my laser thermometer found most all the elbow at 95 degrees while a small spot near the damaged hose ran at 300 degrees! The design was simple and water seems to splash about enough to cool the elbow but after a thurough cleaning the unit remains hot in spots. Whats worse, the new replacement is hot in the same spot. I attached a 3/4 inch shore hose to the elbow where the sea water normally enters and cranked it on. 100 PSI and the elbow remains near 300 degrees on the side the water is discharged from. Ideas?"
"I experienced a exhaust hose failure that prompted the replacement of the old wire reinforced hose. What's strange is 30 hours later the new hose also failed. Upon inspection, heat was the obvious culpret. The damaged spot was at the end of the wet elbow. While running the 120 HP Lehman a good flow of sea water ruled out back pressure and poor watering. The elbow was inspected and found to be more corroded on the hot side. The hot side? During trouble shooting my laser thermometer found most all the elbow at 95 degrees while a small spot near the damaged hose ran at 300 degrees! The design was simple and water seems to splash about enough to cool the elbow but after a thurough cleaning the unit remains hot in spots. Whats worse, the new replacement is hot in the same spot. I attached a 3/4 inch shore hose to the elbow where the sea water normally enters and cranked it on. 100 PSI and the elbow remains near 300 degrees on the side the water is discharged from. Ideas?"