Mercruiser A1 G1 140HP Upper Gear housing Question regarding heat..

1985 Century Mustang

Chief Petty Officer
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Mar 9, 2023
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532
Question: Is the top half of the Sterndrive (upper gear housing cap that has the 4 bolts) suppose to be hot? I just flushed out my engine for 10 minutes w the ears and noticed it was hot when I touched that cap. I checked the gear oil under that cap and it was good. I'm not sure if this is normal as I never touched it prior before today.
 
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alldodge

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Mar 8, 2009
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42,067
Depends on what "hot" means
HOt to touch but not burning your skin, I wouldn't worry about it. The exhaust runs thru the drive and your on a hose
 
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