Boats For Sale:
Exhaust riser |
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shierh 
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Joined: April-29-2015 Location: Florida Status: Offline Points: 605 |
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 Topic: Exhaust riserPosted: March-21-2018 at 4:09pm |
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Center riser on a mid 80's 351 w. What is the bolt size and length, I want to stop on way home tonight and get new bolts and don't recall the size. Thought they were 3/8 and possibly 1"
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Fl Inboards
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Joined: January-20-2008 Location: United States Status: Offline Points: 2119 |
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Posted: March-21-2018 at 4:19pm |
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5/16"X 1-1/4" don't forget the lock washers
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Hobby Boats can be expensive when the hobbyist is limited on their own skill and expertise.
1993 Shamrock "fat" 20. 2008 Nautique 196 5.0 |
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shierh
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Joined: April-29-2015 Location: Florida Status: Offline Points: 605 |
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Posted: March-21-2018 at 4:25pm |
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thanks,
the manifold bolts are 3/8 come to think of it. |
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shierh
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Joined: April-29-2015 Location: Florida Status: Offline Points: 605 |
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Posted: March-21-2018 at 11:08pm |
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bore scoped left side, all have rust speckles in the to end of the cylinders.
Drained manifold then took off the riser. I believe there is evidence of a leak in the riser gasket. Ran scope down the exhaust ports on the manifold and did see a few water beads in the bottom near the head. Couldn't see any definitive cracks. I am going with the riser gasket. Honed both surfaces and will pick up new gaskets tomorrow. Should be ok for Friday on the river. |
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