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95 K Oil Leak

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Jim Godlewski
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95 K Oil Leak

Post by Jim Godlewski » Sat Sep 15, 2018 3:15 am

She's dripping off the front mounting plate enough to where I see a few drops on the keel. The engine was rebuilt two seasons ago, runs great and very few hours.
Any ideas on how I should proceed? I'm not an engine rebuilder although if it's something not to involved I could replace some gaskets as long as its not a complete tear down.
Thanks.
1956 17 Sportsman CC-17-2310
1930 Model 100 7152
https://1956chriscraftsportsman.shutterfly.com/

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Bilge Rat
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Re: 95 K Oil Leak

Post by Bilge Rat » Mon Sep 17, 2018 7:19 am

So to clarify; the dripping is on the front under the flywheel area?
1966 Lyman Cruisette 25 foot "Serenity Now!"
1953 Chris Craft Sportsman 22 foot "Summerwind"

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Matt Smith
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Re: 95 K Oil Leak

Post by Matt Smith » Mon Sep 17, 2018 7:33 am

I am no mechanic. Just a designer, so take with that in mind. I would say a couple drops is kinda normal. But sounds like a seal. I have found that over time these engines kinda get loose nuts. Might be a good idea to just go around and check those. Oil comes out of all sorts of places. I would call your engine rebuilder and ask. As well. But my guess is a main seal.
1948 25' Chris Craft Sportsman
1958 Chris-Craft 17' Cavalier
1937 16' Special Racer
1968 40' Rice Trawler
1968 11' Crab Skiff
2018 Hole in my head

http://www.WoodyBoater.com

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drrot
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Re: 95 K Oil Leak

Post by drrot » Mon Sep 17, 2018 8:08 am

First put an oil absorbent pad in the bilge. Check the oil level, The K engine has no main seal and will weep oil if over filled. wipe the oil pan down with carb cleaner or laquer thinner to help find out where the oil is coming from. Keep us posted.
Jim Staib
www.finewoodboats.com

1931 Chris-Craft 26' #898 http://www.finewoodboats.com/1929%20Chris26.htm
1929 Chris-Craft 28' #3107 http://www.finewoodboats.com/1929%20Chris28.htm
1947 Penn Yan 12' Cartopper WXH474611
1950 Chris-Craft 22' Sportsman U-22-1532
1957 Chris-Craft 26' Sea Skiff SK-26-515
1968 Century 17' Resorter FG-68-174

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Matt Smith
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Re: 95 K Oil Leak

Post by Matt Smith » Mon Sep 17, 2018 8:13 am

Yup, I stand corrected. no Seal, and overfill could be the issue. Simple
1948 25' Chris Craft Sportsman
1958 Chris-Craft 17' Cavalier
1937 16' Special Racer
1968 40' Rice Trawler
1968 11' Crab Skiff
2018 Hole in my head

http://www.WoodyBoater.com

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Bilge Rat
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Re: 95 K Oil Leak

Post by Bilge Rat » Mon Sep 17, 2018 8:35 am

A heads up too: if it chronically seems to keep overfilling itself, make sure the fuel pump isn't accidentally pumping gas into the crankcase. Water could be finding it's way into the crankcase too, but you'd see evidence of that in milkshake colored oil.
1966 Lyman Cruisette 25 foot "Serenity Now!"
1953 Chris Craft Sportsman 22 foot "Summerwind"

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Matt Smith
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Re: 95 K Oil Leak

Post by Matt Smith » Mon Sep 17, 2018 10:11 am

Oh! Thats a good point as well. Smell the oil. Stuff happens. This has been the summer of head gaskets..
1948 25' Chris Craft Sportsman
1958 Chris-Craft 17' Cavalier
1937 16' Special Racer
1968 40' Rice Trawler
1968 11' Crab Skiff
2018 Hole in my head

http://www.WoodyBoater.com

joanroy
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Re: 95 K Oil Leak

Post by joanroy » Mon Sep 17, 2018 1:25 pm

Gotta love a guy who smells his oil once and a while. Think we need to come up with an oil smell-O-meter? Keep that dip stick away from your nose.

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Matt Smith
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Re: 95 K Oil Leak

Post by Matt Smith » Mon Sep 17, 2018 1:45 pm

HAHHAHA Ya, I do it ll the time. Has saved me big time, Your eyes, nose and ears are all guages I suppose. I can tell if my carb is off by the way it sounds. I dont know how to fix it. but boy do I know.. HA
1948 25' Chris Craft Sportsman
1958 Chris-Craft 17' Cavalier
1937 16' Special Racer
1968 40' Rice Trawler
1968 11' Crab Skiff
2018 Hole in my head

http://www.WoodyBoater.com

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Jim Godlewski
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Location: Saint Clair Shores, Michigan

Re: 95 K Oil Leak

Post by Jim Godlewski » Mon Sep 17, 2018 6:43 pm

Bilge Rat wrote:
Mon Sep 17, 2018 7:19 am
So to clarify; the dripping is on the front under the flywheel area?
Yes,here's photo of the mounting plate and a photo of the oil on the dipstick. Its about 1/4 inch above the third mark.
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1956 17 Sportsman CC-17-2310
1930 Model 100 7152
https://1956chriscraftsportsman.shutterfly.com/

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drrot
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Re: 95 K Oil Leak

Post by drrot » Mon Sep 17, 2018 7:17 pm

No smell-o-vision?
Does it smell like gas?
Jim Staib
www.finewoodboats.com

1931 Chris-Craft 26' #898 http://www.finewoodboats.com/1929%20Chris26.htm
1929 Chris-Craft 28' #3107 http://www.finewoodboats.com/1929%20Chris28.htm
1947 Penn Yan 12' Cartopper WXH474611
1950 Chris-Craft 22' Sportsman U-22-1532
1957 Chris-Craft 26' Sea Skiff SK-26-515
1968 Century 17' Resorter FG-68-174

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Jim Godlewski
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Location: Saint Clair Shores, Michigan

Re: 95 K Oil Leak

Post by Jim Godlewski » Mon Sep 17, 2018 7:25 pm

I had to go back and check and yes, I do smell a hint of gas in the oil.
1956 17 Sportsman CC-17-2310
1930 Model 100 7152
https://1956chriscraftsportsman.shutterfly.com/

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Bilge Rat
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Re: 95 K Oil Leak

Post by Bilge Rat » Tue Sep 18, 2018 7:28 am

The oil level could just be higher than it should be after your last oil change-assuming you changed it on the trailer. The boat really has to be in the water to get the oil level correct. When its on the trailer the engine angle may be way different and you could inadvertently overfill. When I do an end of season oil change, I leave the level slightly low until the first launch of the summer and then add some to bring it up to the full mark while its at the dock. My Graymarine V8 has an oil filter which I fill with oil when changing to help prime the oil system and bring the level up a bit.

I would suggest pumping some of the oil out to get the level correct and drive around a while to see if the level is rising before removing the fuel pump. It would be the most likely source of gas in the crankcase, if that's what is happening. If the engine were running super-rich, you'd know it by the black exhaust smoke and the smell.
1966 Lyman Cruisette 25 foot "Serenity Now!"
1953 Chris Craft Sportsman 22 foot "Summerwind"

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Bilge Rat
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Re: 95 K Oil Leak

Post by Bilge Rat » Tue Sep 18, 2018 7:45 am

Just looked at your Shutterfly pictures, impressive work you did! My first wood boat was a 1955 17' Sportsman about 300 numbers newer than yours. It was a fun boat that got me started in this crazy hobby. Back then, this on-line resource didn't exist, in fact none of the internet of today existed!
1966 Lyman Cruisette 25 foot "Serenity Now!"
1953 Chris Craft Sportsman 22 foot "Summerwind"

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Jim Godlewski
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Joined: Sun Feb 14, 2010 12:32 pm
Location: Saint Clair Shores, Michigan

Re: 95 K Oil Leak

Post by Jim Godlewski » Tue Sep 18, 2018 4:00 pm

Thank you! Credit goes out to my late brother John who was my partner throughout this entire restoration. This was our first restoration so credit to Don Danenberg as well for putting out the book. That's mostly how we got the job done.
Right before my brother passed we bought the model 100 so that restoration is on me.

The engine starts and runs great. The fuel pump as far as I know has never been rebuilt and I suspect it may be time. Would it be in my best interest to just rebuild it, change the oil and see if that helps?
1956 17 Sportsman CC-17-2310
1930 Model 100 7152
https://1956chriscraftsportsman.shutterfly.com/

joanroy
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Re: 95 K Oil Leak

Post by joanroy » Tue Sep 18, 2018 4:41 pm

If you have ethanol in your fuel I’d definitely rebuild it. The older pump diaphragms aren’t ethanol resistant. I hate oil leaks. Good Luck!

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Bilge Rat
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Re: 95 K Oil Leak

Post by Bilge Rat » Wed Sep 19, 2018 7:32 am

If you are in Michigan, the end of the boating season is coming up fast so rebuilding it in the off season makes sense. Change the oil as part of your fall decommissioning as usual. You could have the oil analyzed similar to how aircraft engines are required to do by a company that specializes in this service. No idea the cost, but that might identify the presence of raw gas in the oil. It would also show any other particles like bearing material, aluminum piston material, etc.

I am able to purchase non-ethanol 91 octane fuel at some land gas stations and many marina gas docks in upstate NY. If you aren't able to purchase non-ethanol, make sure the pump rebuild diaphragm, check valves and seals are compatible with ethanol fuel, many old kits were not.
1966 Lyman Cruisette 25 foot "Serenity Now!"
1953 Chris Craft Sportsman 22 foot "Summerwind"

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