trans noise

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trans noise

Postby ddependo » Wed Mar 13, 2019 8:25 am

OK Marinette brothers, Have a new one for me.
Just completed fixing ring gear on port engine. Got everything back together and starts fine but makes a clunking noise in neural at all rpm range. Put in gear , forward or reverse and noise goes away. Sound like it is coming from area of damper. Damper looked ok when apart . Any suggestions. I don't think I have enough blood left to take it all apart again. Rough job for a old man!
1973 32 express fly bridge
"Southern Lady"

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Re: trans noise

Postby Fastjeff » Fri Mar 15, 2019 1:20 pm

Bad damper plate (sprngs).

"We live at the bottom of an ocean of air, not at the top." General Marvage Slatington

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Re: trans noise

Postby EWRice » Fri Mar 15, 2019 3:55 pm

If it didn't rattle before, but rattles now, I might suspect the bolts mounting it to the flywheel didn't get tightened. At least those can be checked through the timing hole.
Muskegon Lake
1972 32' Express flybridge
Twin 318s
On board air & prime 920
1963 Thompson Super Sea Lancer
Graymarine 327
1961 Alumacraft 12'
'55 10hp Johnson

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Re: trans noise

Postby javalin390 » Sun Mar 17, 2019 4:03 pm

Not sure if Chryslers suffer the same issue, but the flywheel on GM engines sometimes crack around the bolt holes at the crankshaft, which causes a clunking noise in neutral.
Jim Elias
1974 37' SedanFlybridge
Twin 360 Chryslers.
Marblehead, Ohio