Stus-List balsa core

2015-01-15 Thread Burt Stratton via CnC-List
I have resigned myself to the fact that I need to address my decks and
cockpit sole. The PO installed wood strips fore to aft on the cockpit sole
ostensibly to provide some lateral traction. They were not properly bedded
and as you might imagine, the wood strips did not last long. There are open
screw holes and if I step next to them water comes out. That is an obvious
problem.

 

The reason I am concerned about my decks, particularly my cabin roof is the
fact that a brown wet film will form over time on the inside of the cabin
roof. My roof has no headliner. The paint was peeling badly when I bought
the boat and I have stripped it off. If I clean the fiberglass and wait a
few days the film gradually appears. My assumption is that there may be a
wet core in the roof. I will get a surveyor to take readings with his
moisture tool to confirm but assuming that is the case, I would appreciate
any insight by listers who have tackled this problem. 

 

I am not an experienced fiberglass guy. I don't particularly like working
with fiberglass but I am pretty handy otherwise and would be willing to
attempt this work in order to save a few hard earned bucks. 

 

Here are a couple specific questions:

1.   What would the balsa typically be replaced with? An appropriate
thickness of mat?

2.   Should I attempt to save the fiberglass skin I remove to be re-used
or just use new fabric to glass over the repair?

3.   Assuming I work from the inside, how do I defy gravity to keep the
new mat or fabric from falling down until it cures? Does the resin have
enough mastic properties to keep it up?

 

It is starting to look like the coming season may be lost for me. I have a
lot to do and can't do most of it until the temps increase. I do want to
rehabilitate this boat and do it right. I think it will be worth it whether
I keep the boat or sell her when I'm done. The boat is covered so I am
hoping it will dry out a bit before I start. 

 

Thanks as always

 

Skip

1974 CNC 33 3/4tonner

On the hard in Walpole, MA

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Re: Stus-List balsa core

2015-01-15 Thread Gary Nylander via CnC-List
I'll let the skilled folks chime in with more specific answers, but I can 
relate what one of our handy guys did to his Cal 34 a few years ago. It is 
something you could do to get started.

Where the cabin roof was soggy, he covered the boat (in the water for the 
winter) and put a heater inside. He then drilled a bunch of holes (from the 
inside) up into the balsa, turned on the heat and let it dry out over the 
winter. I don't remember whether he pulled the inside skin off or just filled 
the holes and cleaned up the mess the following spring, but he got rid of the 
moisture and firmed up the cabin roof.

Gary
  - Original Message - 
  From: Burt Stratton via CnC-List 
  To: cnc-list@cnc-list.com 
  Sent: Thursday, January 15, 2015 9:25 AM
  Subject: Stus-List balsa core


  I have resigned myself to the fact that I need to address my decks and 
cockpit sole. The PO installed wood strips fore to aft on the cockpit sole 
ostensibly to provide some lateral traction. They were not properly bedded and 
as you might imagine, the wood strips did not last long. There are open screw 
holes and if I step next to them water comes out. That is an obvious problem.

   

  The reason I am concerned about my decks, particularly my cabin roof is the 
fact that a brown wet film will form over time on the inside of the cabin roof. 
My roof has no headliner. The paint was peeling badly when I bought the boat 
and I have stripped it off. If I clean the fiberglass and wait a few days the 
film gradually appears. My assumption is that there may be a wet core in the 
roof. I will get a surveyor to take readings with his moisture tool to confirm 
but assuming that is the case, I would appreciate any insight by listers who 
have tackled this problem. 

   

  I am not an experienced fiberglass guy. I don't particularly like working 
with fiberglass but I am pretty handy otherwise and would be willing to attempt 
this work in order to save a few hard earned bucks. 

   

  Here are a couple specific questions:

  1.   What would the balsa typically be replaced with? An appropriate 
thickness of mat?

  2.   Should I attempt to save the fiberglass skin I remove to be re-used 
or just use new fabric to glass over the repair?

  3.   Assuming I work from the inside, how do I defy gravity to keep the 
new mat or fabric from falling down until it cures? Does the resin have enough 
mastic properties to keep it up?

   

  It is starting to look like the coming season may be lost for me. I have a 
lot to do and can't do most of it until the temps increase. I do want to 
rehabilitate this boat and do it right. I think it will be worth it whether I 
keep the boat or sell her when I'm done. The boat is covered so I am hoping it 
will dry out a bit before I start. 

   

  Thanks as always

   

  Skip

  1974 CNC 33 3/4tonner

  On the hard in Walpole, MA



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Re: Stus-List balsa core

2015-01-15 Thread Robert Mazza via CnC-List
Skip,

A few of observations:

1. It is unlikely that the brown film under your deck is core related. In
my own C&C Corvette that film was emanating from the micro-balloon based
fairing compound that was used to fair the underside of the deck, since,
like your boat, the Corvette does not have a head liner. It was a dusty and
dirty job to grind all that old fairing compound off and refair the
underside of the deck with West Epoxy fairing compound, but since then it
has been trouble free.
2. There is an excellent two part article on deck core repair and
replacement  in the last two issues  of Good Old Boat magazine. Well worth
reading, as is the whole magazine. I can say that because I'm a
Contributing Editor, although I subscribed to the magazine well before
that.
3. Hire a good surveyor (preferably SAMS or NAMS accredited) to tap  and
run a moisture meter over the deck to really determine the extent of the
problem.
4. If core needs to be replaced, it should be replaced with new core, not
solid glass, New balsa can be used, as long as all openings and fasteners
are isolated from the core and all the kerfs in the core are filled with
resin. That applies to foam cores as well. If foam it should be a minimum
of 5 Lb. density.

Rob

On Thu, Jan 15, 2015 at 9:25 AM, Burt Stratton via CnC-List <
cnc-list@cnc-list.com> wrote:

> I have resigned myself to the fact that I need to address my decks and
> cockpit sole. The PO installed wood strips fore to aft on the cockpit sole
> ostensibly to provide some lateral traction. They were not properly bedded
> and as you might imagine, the wood strips did not last long. There are open
> screw holes and if I step next to them water comes out. That is an obvious
> problem.
>
>
>
> The reason I am concerned about my decks, particularly my cabin roof is
> the fact that a brown wet film will form over time on the inside of the
> cabin roof. My roof has no headliner. The paint was peeling badly when I
> bought the boat and I have stripped it off. If I clean the fiberglass and
> wait a few days the film gradually appears. My assumption is that there may
> be a wet core in the roof. I will get a surveyor to take readings with his
> moisture tool to confirm but assuming that is the case, I would appreciate
> any insight by listers who have tackled this problem.
>
>
>
> I am not an experienced fiberglass guy. I don’t particularly like working
> with fiberglass but I am pretty handy otherwise and would be willing to
> attempt this work in order to save a few hard earned bucks.
>
>
>
> Here are a couple specific questions:
>
> 1.   What would the balsa typically be replaced with? An appropriate
> thickness of mat?
>
> 2.   Should I attempt to save the fiberglass skin I remove to be
> re-used or just use new fabric to glass over the repair?
>
> 3.   Assuming I work from the inside, how do I defy gravity to keep
> the new mat or fabric from falling down until it cures? Does the resin have
> enough mastic properties to keep it up?
>
>
>
> It is starting to look like the coming season may be lost for me. I have a
> lot to do and can’t do most of it until the temps increase. I do want to
> rehabilitate this boat and do it right. I think it will be worth it whether
> I keep the boat or sell her when I’m done. The boat is covered so I am
> hoping it will dry out a bit before I start.
>
>
>
> Thanks as always
>
>
>
> Skip
>
> 1974 CNC 33 3/4tonner
>
> On the hard in Walpole, MA
>
> ___
> This List is provided by the C&C Photo Album.
>
> Please donate to the C&C Photo Album to keep this list free for all
> subscribers.
>
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>
>
>
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Re: Stus-List balsa core

2015-01-15 Thread Joel Aronson via CnC-List
Skip,

If it is the core, I think it is usually done from above, preferably
cutting along the edge of the non-skid and lifting out the glass.  Others
who have actually done it will correct  me if I am wrong.​

I hope Rob is right that it is not the core!

Joel

On Thu, Jan 15, 2015 at 10:22 AM, Robert Mazza via CnC-List <
cnc-list@cnc-list.com> wrote:

> Skip,
>
> A few of observations:
>
> 1. It is unlikely that the brown film under your deck is core related. In
> my own C&C Corvette that film was emanating from the micro-balloon based
> fairing compound that was used to fair the underside of the deck, since,
> like your boat, the Corvette does not have a head liner. It was a dusty and
> dirty job to grind all that old fairing compound off and refair the
> underside of the deck with West Epoxy fairing compound, but since then it
> has been trouble free.
> 2. There is an excellent two part article on deck core repair and
> replacement  in the last two issues  of Good Old Boat magazine. Well worth
> reading, as is the whole magazine. I can say that because I'm a
> Contributing Editor, although I subscribed to the magazine well before
> that.
> 3. Hire a good surveyor (preferably SAMS or NAMS accredited) to tap  and
> run a moisture meter over the deck to really determine the extent of the
> problem.
> 4. If core needs to be replaced, it should be replaced with new core, not
> solid glass, New balsa can be used, as long as all openings and fasteners
> are isolated from the core and all the kerfs in the core are filled with
> resin. That applies to foam cores as well. If foam it should be a minimum
> of 5 Lb. density.
>
> Rob
>
> On Thu, Jan 15, 2015 at 9:25 AM, Burt Stratton via CnC-List <
> cnc-list@cnc-list.com> wrote:
>
>> I have resigned myself to the fact that I need to address my decks and
>> cockpit sole. The PO installed wood strips fore to aft on the cockpit sole
>> ostensibly to provide some lateral traction. They were not properly bedded
>> and as you might imagine, the wood strips did not last long. There are open
>> screw holes and if I step next to them water comes out. That is an obvious
>> problem.
>>
>>
>>
>> The reason I am concerned about my decks, particularly my cabin roof is
>> the fact that a brown wet film will form over time on the inside of the
>> cabin roof. My roof has no headliner. The paint was peeling badly when I
>> bought the boat and I have stripped it off. If I clean the fiberglass and
>> wait a few days the film gradually appears. My assumption is that there may
>> be a wet core in the roof. I will get a surveyor to take readings with his
>> moisture tool to confirm but assuming that is the case, I would appreciate
>> any insight by listers who have tackled this problem.
>>
>>
>>
>> I am not an experienced fiberglass guy. I don’t particularly like working
>> with fiberglass but I am pretty handy otherwise and would be willing to
>> attempt this work in order to save a few hard earned bucks.
>>
>>
>>
>> Here are a couple specific questions:
>>
>> 1.   What would the balsa typically be replaced with? An appropriate
>> thickness of mat?
>>
>> 2.   Should I attempt to save the fiberglass skin I remove to be
>> re-used or just use new fabric to glass over the repair?
>>
>> 3.   Assuming I work from the inside, how do I defy gravity to keep
>> the new mat or fabric from falling down until it cures? Does the resin have
>> enough mastic properties to keep it up?
>>
>>
>>
>> It is starting to look like the coming season may be lost for me. I have
>> a lot to do and can’t do most of it until the temps increase. I do want to
>> rehabilitate this boat and do it right. I think it will be worth it whether
>> I keep the boat or sell her when I’m done. The boat is covered so I am
>> hoping it will dry out a bit before I start.
>>
>>
>>
>> Thanks as always
>>
>>
>>
>> Skip
>>
>> 1974 CNC 33 3/4tonner
>>
>> On the hard in Walpole, MA
>>
>> ___
>> This List is provided by the C&C Photo Album.
>>
>> Please donate to the C&C Photo Album to keep this list free for all
>> subscribers.
>>
>> Email address:
>> CnC-List@cnc-list.com
>> To change your list preferences, including unsubscribing -- go bottom of
>> page at:
>> http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
>>
>>
>>
>
> ___
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> subscribers.
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>
>
>


-- 
Joel
301 541 8551
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Re: Stus-List balsa core

2015-01-15 Thread Josh Muckley via CnC-List
She probably won't dry on her own.  The best way to tackle a job this big
is to cut (angle-grind) around the edges and remove either the inner or
outer skin.  Either side has its advantages and disadvantages.  Then dig
out the core and replace.  Then re-lay the skin.

Josh Muckley
S/V Sea Hawk
1989 C&C 37+
Solomons,  MD

I have resigned myself to the fact that I need to address my decks and
cockpit sole. The PO installed wood strips fore to aft on the cockpit sole
ostensibly to provide some lateral traction. They were not properly bedded
and as you might imagine, the wood strips did not last long. There are open
screw holes and if I step next to them water comes out. That is an obvious
problem.



The reason I am concerned about my decks, particularly my cabin roof is the
fact that a brown wet film will form over time on the inside of the cabin
roof. My roof has no headliner. The paint was peeling badly when I bought
the boat and I have stripped it off. If I clean the fiberglass and wait a
few days the film gradually appears. My assumption is that there may be a
wet core in the roof. I will get a surveyor to take readings with his
moisture tool to confirm but assuming that is the case, I would appreciate
any insight by listers who have tackled this problem.



I am not an experienced fiberglass guy. I don't particularly like working
with fiberglass but I am pretty handy otherwise and would be willing to
attempt this work in order to save a few hard earned bucks.



Here are a couple specific questions:

1.   What would the balsa typically be replaced with? An appropriate
thickness of mat?

2.   Should I attempt to save the fiberglass skin I remove to be
re-used or just use new fabric to glass over the repair?

3.   Assuming I work from the inside, how do I defy gravity to keep the
new mat or fabric from falling down until it cures? Does the resin have
enough mastic properties to keep it up?



It is starting to look like the coming season may be lost for me. I have a
lot to do and can't do most of it until the temps increase. I do want to
rehabilitate this boat and do it right. I think it will be worth it whether
I keep the boat or sell her when I'm done. The boat is covered so I am
hoping it will dry out a bit before I start.



Thanks as always



Skip

1974 CNC 33 3/4tonner

On the hard in Walpole, MA

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Re: Stus-List balsa core

2015-01-15 Thread Hoyt, Mike via CnC-List
Skip

We owned a J Boat (J/27) for 7 years and before that a Hinterhoeller built 
Niagara 26 (call it a C&C as build is the same.  All C&Cs of the era and all 
Niagaras of the era and every J boat built have wet balsa cored decks (the 
newer J Boats use foam of some sort).  We replaced core on the Niagara in 
cockpit sole and large sections around chainplates and on the J/27 much more 
extensively.  On the J/27 we documented under the Projects link on my website.  
It was all done from above.
http://users.eastlink.ca/~mhoyt is the link to my site but there may be 
problems with some of the links so check back later

Basically it is an easy job when tackled from above.

1.  Cut the outline of the area you wish to remove and decide then if you 
are keeping topskin or not.

2.  If keeping top skin use wood chisels and wedges to remove.  Is not easy 
but may be a good idea on contoured coach roof.  A friend did this approach on 
coachroof of his J/27

3.  If not keeping top skin then cut hash marks across the entire section 
to be removed down thru top layer of glass, then thru balsa and being careful 
not to cut the bottom layer of glass

4.  Use wood chisel and hammer to remove all of the rotted and wet core.

5.  Bevel or taper the surrounding top skin to give something for new cloth 
to attach to

6.  After clean up of all residues etc (acetone is good for this) cut out 
three layers of glass cloth (6 oz is what I use) and the section of new core.

7.  Place all three layers of loth in place and then thoroughly wet with 
resin once  in place.  You can use a paint brush or an epoxy stick or a spatula 
– whatever you like. Ensure there is excess resin covering the wetted cloth and 
then put the new core section in place.  Weight the new core section with heavy 
objects ( a cinder block will do) but be sure you have a release cloth of some 
sort (plastic food wrap works) over the core before placing weights

8.  Once cured (or nearly cured and still tacky) remove weights and food 
wrap and use thickened resin to fill in any voids surrounding the new core.  
Wait for a cure at this point

9.  Grind off any excess cured resin and any bubbles and then cut out and 
apply three more layers of glass cloth.  Overlap the area successively with 
each.

10.   Once this is cured you grind sand off excesses and then apply more layers 
of cloth to build up followed by fairing coats of thickened resin once nearly 
level.  Check level with a straight edge and sand with Random Orbital Sander (I 
use 80 grit) until smooth.

11.   Its an old boat – feel free to paint the deck.  If you are lucky and 
careful you can confine your repairs to thenon skid sections of the deck and 
the repairs ae masked by this.  Tape off areas and use Kiwi Grip or Interdeck 
or similar for the paint.

Once again I apologise that my web site is down as this is all documented with 
photos.  I will fight with my cable provider to get this resolved.

You can also attempt to do coachroof from underside.  Get a West System Vacuum 
bagging kit to do this.

A lot more information is available on West System site.  Also on Sailing 
Anarchy there is a fixit forum sponsored by West System where you can ask 
questions and a lot also on the Sailnet Gear and Maintenance forum.

You can decide to use either polyester resin (fiberglass) or epoxy resin.  
Epoxy adheres better but has much longer cure times and is far more expensive.  
Most boat repair shops use Polyester and you can even use a hybrid – polyester 
for the bulk of the work and then epoxy for the  surface work and fairing 
layers.  Remember that epoxy can go over polyester but that polyester does not 
go over epoxy

You are lucky that you have no head liner.  They may look nice but they are 
awful when working on your boat.

You might also be able to hire a surveyor to map out the moisture in your deck. 
 I had this done on the J/27 for a mere $40 and it gave me a schedule of 
repairs for the next several years.

Best of luck.  This is not very difficult work but is time consuming and 
weather dependent.  A lot of people on this list have done this sort of work so 
keep asking questions.

Mike
Persistence
1987 Frers 33

Formerly
Nut Case
1987 J27 #150

Formerly
Full tilt 2
1979 Niagara 26 #002

Formerly P23 “Monkey Bear”
Formerly
Blue Horizon No. 1 (family boat)
1981 C&C 36 bought new
From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Joel Aronson 
via CnC-List
Sent: Thursday, January 15, 2015 11:28 AM
To: Robert Mazza; cnc-list@cnc-list.com
Subject: Re: Stus-List balsa core

Skip,

If it is the core, I think it is usually done from above, preferably cutting 
along the edge of the non-skid and lifting out the glass.  Others who have 
actually done it will correct  me if I am wrong.​

I hope Rob is right that it is not the core!

Joel

On Thu, Jan 15, 2015 at 10:22 AM, Robert Mazza via CnC-List 
mailto:cnc-list@cnc-list.com>> wrote:
Skip,

A few of ob

Stus-List question about Calypso

2015-01-15 Thread Ronald B. Frerker via CnC-List
Martin,
Do I recall seeing on the list somewhere that your boat was originally called 
Esta Es?
I got a tour of it after the Chi-Mac race one year if so.
A beautiful boat.
Ron
Wild Cheri
C&C 30-1
STL


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Re: Stus-List balsa core

2015-01-15 Thread Martin DeYoung via CnC-List
> Here are a couple specific questions:

1.  What would the balsa typically be replaced with? An appropriate 
thickness of mat?

2.  Should I attempt to save the fiberglass skin I remove to be re-used or 
just use new fabric to glass over the repair?

3.  Assuming I work from the inside, how do I defy gravity to keep the new 
mat or fabric from falling down until it cures? Does the resin have enough 
mastic properties to keep it up?

Burt, we are deep into a similar project on Calypso.

1. We replaced balsa core with balsa core except where there are holes 
through the deck.  For any area with holes we used filled epoxy and/or various 
types of fiberglass (bi-ax, roving, different thicknesses of cloth, and G10 
epoxy board).

2. We have mostly worked from the inside owing to how much thinner the 
inside layup is and the size of repair areas.  We have retained and re-used 
much of the inner skin but engineered the repair so there is new epoxy layup 
involved to be sure the structural integrity is maintained.

3. We have been using lifting devices including a scissor jack, adjustable 
shower rods, and blocks of wood to apply upward pressure.  We have found it 
important to have a vent hole (or several based on square area) at the top of 
repairs to vent out trapped air and allow epoxy to be "topped off"
You mentioned hope that the wet areas will dry out.  Our experience indicates 
that wet balsa will only dry if it exposed.  I have seen a section of balsa 
that is dry as new with wet balsa ¾" away.  If possible drill some exploratory 
holes around the affected area.  If you find dark wet balsa keep going.  If you 
find tan colored balsa that is dry or just barely indicates dampness (place on 
paper and look for the moisture) it may be OK to stop drilling.  Baltek, balsa 
core supply company has info on their web site that indicates balsa core will 
retain structural integrity with up to 30% moisture content.  We worked for 
much lower moisture content in all areas that are under any type of load.

Balsa core repair is straight forward but messy.  We use West Systems epoxy and 
fillers along with materials from TAP Plastics and several balsa core 
suppliers.  Take a look around West Systems web site including their tech and 
FAQ sections if you want some more info.  Let me know if you want more free 
advice.

Martin
Calypso
1971 C&C 43
Seattle

[Description: cid:D1BF9853-22F7-47FB-86F2-4115CE0BAF2F]

From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Burt 
Stratton via CnC-List
Sent: Thursday, January 15, 2015 6:26 AM
To: cnc-list@cnc-list.com
Subject: Stus-List balsa core

I have resigned myself to the fact that I need to address my decks and cockpit 
sole. The PO installed wood strips fore to aft on the cockpit sole ostensibly 
to provide some lateral traction. They were not properly bedded and as you 
might imagine, the wood strips did not last long. There are open screw holes 
and if I step next to them water comes out. That is an obvious problem.

The reason I am concerned about my decks, particularly my cabin roof is the 
fact that a brown wet film will form over time on the inside of the cabin roof. 
My roof has no headliner. The paint was peeling badly when I bought the boat 
and I have stripped it off. If I clean the fiberglass and wait a few days the 
film gradually appears. My assumption is that there may be a wet core in the 
roof. I will get a surveyor to take readings with his moisture tool to confirm 
but assuming that is the case, I would appreciate any insight by listers who 
have tackled this problem.

I am not an experienced fiberglass guy. I don't particularly like working with 
fiberglass but I am pretty handy otherwise and would be willing to attempt this 
work in order to save a few hard earned bucks.

Here are a couple specific questions:

1.  What would the balsa typically be replaced with? An appropriate 
thickness of mat?

2.  Should I attempt to save the fiberglass skin I remove to be re-used or 
just use new fabric to glass over the repair?

3.  Assuming I work from the inside, how do I defy gravity to keep the new 
mat or fabric from falling down until it cures? Does the resin have enough 
mastic properties to keep it up?

It is starting to look like the coming season may be lost for me. I have a lot 
to do and can't do most of it until the temps increase. I do want to 
rehabilitate this boat and do it right. I think it will be worth it whether I 
keep the boat or sell her when I'm done. The boat is covered so I am hoping it 
will dry out a bit before I start.

Thanks as always

Skip
1974 CNC 33 3/4tonner
On the hard in Walpole, MA
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Stus-List My sailing stuff on EBay

2015-01-15 Thread John Russo via CnC-List
Just a heads up that I have listed the following on Ebay

 

 

110 ft 3/8 Sta Set X New England low stretch Spinnaker Halyard Red flec -
Very good condition - Lightly used - 

 

(2) - 46ft matched lengths of 7/16 New England Rope Sta Set double braided
Polyester Jib Sheets - Blue Flec- Moderate use - Good condition - 

 

92 Ft 9/16  Sta Set New England Ropes double braided polyester Jib Sheet -
Red Flec - Lightly used - very good condition 

 

(Above sheets were too large in diameter for new Lewmar ST40  winches
recently installed.)

 

New - Automac 50 Amp Alternator Positive controller - 50 amp ammeter has
internal shunt and can be mounted and used independently

 

Johnson 6.5 Hp 2 cycle outboard Operators Manual for J6 REIA engine - good
condition

 

Johnson/Evinrude  2.3 thru 8 Hp 2 cycle outboard Service Manual - Like New

 

Sea Dog Stainless Steel Polished Louvered Vent - width 5" ,height 4-5/8" -
part # 331390-1 -New (in original sealed package )

 

John 

Arpeggio C&C 32

Norwalk, CT

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