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hummingbirdbassist

hummingbirdbassist

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Sep 20, 2011
135
hunter 30 md
I have spent the last year preparing a 80 hunter 30 for launch.
Well while bottom painting this past weekend I noticed a compression ( for lack of a better term) the compression is aft the keel. There's is no keep crack, no dents on keel , just the compression has caused a spot on bottom and push floor up on starboard side just before steps( raised the floor wood and at first I thought it was separated because of moisture from water being on floor ..
History:
Boat has been on hard since 1999
Owner took very good care of her , she just got to old to sail
Owner bought her new in 1980 so I'm second owner
She had all records of anything done until she retired from sailing
Documented vessel

But I'm thinking and correct me if I'm wrong:
The keel bottom compression I see is from improper set up over years and boats weight is on keel. Ground and time may have caused jacks to shift /slip.
Will having yard re set up boat higher in the "stirrups" take weight off keel and weight of keel have enough memory to drop down and round of bottom of boat to normal and subsequently cabin sole drop back into place?
If so what should I look for to be unseen damage, will this old boat bounce back into shape.
Next
There is water in the back of engine where it says oil ?
But in draining oil it just came out old and sludgy.
Motor turns over by hand and gives a strong compression pop.
Any help and pointers I appreciate!

image-2632112881.jpg
 
spraygun

spraygun

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Feb 11, 2006
141
Hunter 34 Galveston,Texas
If that is a Yanmar engine. And the oil filler cap is in the very back of the motor. That is your reduction gear, aka transmission. You mentioned it says oil on it .if its a metal type bolt that unscrews from the top of the unit. That is not your engine oil. Maybe shoot some pictures of all of that. Then we can tell more
 
kito

kito

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Sep 13, 2012
2,011
1979 Hunter Cherubini 30 Clemmons
It's most likely a 12 hp Yanmar. Engine oil fills from the front and the transmission oil is in back. Not sure what you mean by "there's water in the back of the engine"
 
hummingbirdbassist

hummingbirdbassist

.
Sep 20, 2011
135
hunter 30 md
It is a Yanmar 2qm15, I do believe it is a transmission housing it says oil on a little square metal plug/dipstick, when I first got her, she was on blocks on hill , so we had to pump the cabin out of about a foot of water from mid cabin back to stuffing box. However after cleaning up , getting rust off etc from the helm you can go forward and propeller is locked, you can go reverse and propellor is lock, go to neutral and propellor spins freely. But yesterday I lifted dipstick out and it was wet, not rusted just wet?
And yes motor oil fill is mid engine
 
woodster

woodster

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Sep 15, 2009
6,243
S2 9.2a Fairhope Al
hummingbirdbassist said:
It is a Yanmar 2qm15, I do believe it is a transmission housing it says oil on a little square metal plug/dipstick, when I first got her, she was on blocks on hill , so we had to pump the cabin out of about a foot of water from mid cabin back to stuffing box. However after cleaning up , getting rust off etc from the helm you can go forward and propeller is locked, you can go reverse and propellor is lock, go to neutral and propellor spins freely. But yesterday I lifted dipstick out and it was wet, not rusted just wet?
And yes motor oil fill is mid engine
Click to expand
pump all that water and oil out of the gearbox and wash it out with some diesel fuel...then pump that out and wash it again with some Marvell ministry oil ....then pump that out and put in proper amount of oil .....

regards

woody

ps and when running it stop and check to see that the oil does't turn milky...if it does not go milky then you are more than likely good to go...
 
Bill Roosa

Bill Roosa

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Jun 6, 2006
6,990
currently boatless wishing Harrington Harbor North, MD
Your diagnosis about the hull sounds correct. never heard of one being on the hard for that long though. Might "cure" itself once you put her in the water. I know it takes a few days after we launch for all the cabinets to "settLE into place"
 
kloudie1

kloudie1

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Nov 6, 2006
10,100
Hunter 34 Mandeville Louisiana
I agree, the dent is most likely from bad load distribution while on the yard. You probably had about 5 tons of water on board which caused the problem. The dent will probably go away but it may take a few years. Meanwhile, check the glass in the inside and outside area of the dent to make sure you don't have any thru-hull cracks .. The water in the transmission may have ruined the bearings, requiring a tear-down and replacement.. but do the purge and Marvel treatment first to see if you can get it kinda free. Any rust in the water that you pump out of the transmission will tell ya that you probably have a good bit of work to do in there. Good Luck.
 
woodster

woodster

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Sep 15, 2009
6,243
S2 9.2a Fairhope Al
uncledom said:
Woodster will that ministry oil square me with Jesus? How much is it? I already put ten bucks in the basket! JK. ;)
Click to expand
i misspelled mystery ......its not that bad some where about 7 dollars a quart...like Kloudie said the bearings may be rusted but i would try this process first and see also check for rust in the drainage water like he said i have see it do a lot of positive things ......the best thing would be to pull the gear box and rebuild it but that QM 15 is not supported by Yanmar as it is too old and parts are hard to find new off the shelf if you have major problems with the tranny and engine just repower it with a good used setup...example i think i saw a running westerbeke for sale on here with tranny for about 1850.00 and on a 30 year old boat it wouldn't mater that much as long as it is in good repair might be the best path in the long run.....funny thing about these old boats they are full of surprises.....but they are really fun even with all that ....good luck....

regards

woody
 
hummingbirdbassist

hummingbirdbassist

.
Sep 20, 2011
135
hunter 30 md
Good one " uncledom" the ministry oil!!! I better put my 10 in also and go to confessional.
Going to see it yard has a better way of blocking to relieve the pressure
 
hummingbirdbassist

hummingbirdbassist

.
Sep 20, 2011
135
hunter 30 md
Went to see her yesterday, well I pumped about 8 ounces of water from tranny,,,,, go figure
Anyway, took a little tapping on side of tranny at gear switch a lot of penetrating oil, and it would switch from front to reverse,,,,,,,,,, here is the good part, ,,,,,,, bumped starter forward gear and shaft turned , done the same in reverse and shaft moved and prop was turning,,,,,,,, we are on our way,,,, whooooo
 
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