Repowering transom-gap outboard, installation? - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
  #1  
Old 09-17-2010
Learning to sail
 
Join Date: Aug 2010
Location: San Francisco Bay Area
Posts: 113
Thanks: 1
Thanked 2 Times in 2 Posts
Rep Power: 5
aaronwindward is on a distinguished road
Repowering transom-gap outboard, installation?

I'm looking at buying an 1972 Ericson 27. It was factory fitted with an outboard, but that motor has long since departed. The current outboard it has is dead, and I'd like to replace it with a completely new one, presumably 9 HP or 15 HP. (I specifically do not want to repower it with a used motor.)

1) What type of outboard do I need? Do new 2-stroke outboards still exist, or do I need to get a 4-stroke? The 4-strokes I've seen new are about $2K; is this about right, or is that paying too much?

2) How major of a deal is it to install the new outboard? Can I just drop the new outboard in, or will I need to drill holes in the transom? The previous outboard was clamped only, with no through-holes. I've attached some pictures of the old outboard mounting in case that's helpful.

3) Do I need to worry about getting an outboard that is not dimensionally-compatible? I know I will need to get the proper shaft length, but do I need to worry about the cowling fitting inside of the space available?

Edit: I think I may have been screwed by the outboard dealer. See my latest post.
Attached Thumbnails
Repowering transom-gap outboard, installation?-transom1.jpg   Repowering transom-gap outboard, installation?-transom2.jpg   Repowering transom-gap outboard, installation?-transom3.jpg  

Last edited by aaronwindward; 09-22-2010 at 04:48 AM.
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 09-17-2010
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 11 Times in 11 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
Aaron—

The problem you're going to run into is that most modern engines in the size range you're looking at are going to be way too large to fit in that cutout. The cutout was designed for TWO-STROKE engines, which are generally a good deal more compact than their current FOUR-STROKE cousins.

You should probably get a 6 HP four-stroke with an extra long shaft. That would probably be about the largest engine that will work, given the size of current four-stroke engines.
__________________
Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Quick reply to this message Share with Facebook
  #3  
Old 09-17-2010
Banned
 
Join Date: Jul 2007
Location: Truckee, CA
Posts: 8,591
Thanks: 2
Thanked 115 Times in 113 Posts
Rep Power: 0
dabnis is on a distinguished road
Aaron,

You might try to make up a crude template out of a
cardboard box using the proposed motor's dimensions.
I suggest you get the largest HP motor with the longest
shaft that will fit. I had a Coronado 25 with a 6HP 2 stroke
which was marginal for SF Bay conditions. Changed to
a 15 HP 2 stroke which worked really well.

Dabnis
Reply With Quote Quick reply to this message Share with Facebook
  #4  
Old 09-17-2010
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 11 Times in 11 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
Dabnis—

The template is a great idea. However, the OP isn't interested in getting a used motor, and I don't believe that they're selling new TWO-STROKE motors, especially in the People's Republic of California—which has stricter emissions standards than the rest of the country in many ways.
__________________
Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Quick reply to this message Share with Facebook
  #5  
Old 09-17-2010
Banned
 
Join Date: Jul 2007
Location: Truckee, CA
Posts: 8,591
Thanks: 2
Thanked 115 Times in 113 Posts
Rep Power: 0
dabnis is on a distinguished road
Dog,
My thought on the template was for any motor he is
considering. From looking at the picture it looks like
the old motor may be a Evinrude/Johnson 9.9 or 15 Hp
2 stroke. Craigs List may be a good source if he decides
on a 2 stroke rather than a new 4 stroke, it's his call.
At least the old 2 stroke fits and even a good used motor
would be a whole lot less.

Aaron, electric start would be a good option along with
remote controls, almost as good as an inboard from an
operating standpoint.

Dabnis
Reply With Quote Quick reply to this message Share with Facebook
  #6  
Old 09-17-2010
carl762's Avatar
Sundance 23
 
Join Date: Jan 2010
Location: Portland Oregon
Posts: 878
Thanks: 2
Thanked 5 Times in 5 Posts
Rep Power: 5
carl762 is on a distinguished road
Up round these here parts 4-strokes are going for $2,800 on up.
__________________
Water is Life
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Quick reply to this message Share with Facebook
  #7  
Old 09-17-2010
casioqv's Avatar
Senior Member
 
Join Date: Jun 2009
Location: Riverside, CA
Posts: 410
Thanks: 1
Thanked 2 Times in 2 Posts
Rep Power: 6
casioqv is on a distinguished road
AFAIK you can't get 2 strokes anymore. The new 4 strokes are much more fuel efficient, but the single cylinders have a bad vibration, and the two cylinders are much heavier and larger than the old 2 cylinder 2 strokes at the same power level.

A 2 stroke makes a lot more sense than a 4 stroke if you don't plan to motor long distances. Otherwise, you'll need to look at single cylinder 4 strokes and get used to the vibration (although they are quieter).

It's quite a shame you're not willing to consider used engines. I picked up a 1967 Evinrude for $200, and with another $100 in parts it's probably good for another 43 years of reliable use. It's your money though!

Last edited by casioqv; 09-17-2010 at 07:54 PM.
Reply With Quote Quick reply to this message Share with Facebook
  #8  
Old 09-17-2010
Banned
 
Join Date: Jul 2007
Location: Truckee, CA
Posts: 8,591
Thanks: 2
Thanked 115 Times in 113 Posts
Rep Power: 0
dabnis is on a distinguished road
Agree with Casioqv,

I ran my 15 HP Evinrude 2 stroke for 10 years, Wide open for
hours on end, never flushed it. It ran as when new when I sold the boat,
never had any problems of any kind. Scanning through Craig's List
many motors appear to be in good shape with not too many hours
on them. If you are selective and carefull you can probably find a
good 9.9 or 15 HP 2 stroke, like what appears to be on the boat in your
pictures. Best part is that it fits, although a long shaft model is
much better in the short high chop we have in the bay and outside.
I think Dog is right, the 4 strokes of equivelent power probably wouldn't
fit. As mentioned earlier I started with a 6HP on a boat smaller than
yours and had to change it to a 15 HP for inside and outside the bay.
Reply With Quote Quick reply to this message Share with Facebook
  #9  
Old 09-18-2010
newhaul's Avatar
islander bahama 24
 
Join Date: Feb 2010
Location: bremerton wa
Posts: 1,313
Thanks: 7
Thanked 39 Times in 39 Posts
Rep Power: 5
newhaul is on a distinguished road
evinrude 15 h.O. the only one i could find new that says carb compliant myself i would do the cl thing for a good used unit. 15 hp keep up on zinks and impellers and all is good much better power to weight ratio.
Reply With Quote Quick reply to this message Share with Facebook
  #10  
Old 09-19-2010
Capt Blithe
 
Join Date: Sep 2005
Posts: 46
Thanks: 2
Thanked 0 Times in 0 Posts
Rep Power: 0
tgzzzz is on a distinguished road
A used engine isn't going to make the OP happy. I loved the honesty of the post: drilling holes in the transom was a bigger deal than desired. Futzing with an old fashioned ignition will ruin the boating experience for this new skipper. I'm too lazy to post a link (nor do I know how) but I think Tohatsu makes small two stroke outboards that are sold online or at boat dealers.

Aaron, go with a new engine for sure. Push the button, it starts. Modern two strokes are great. The four stroke is much quieter though. A plus. I'll bet that the dealer where you want to buy a 4 stroke from can hook you up with a guy who can enlarge your engine well for under $100. A couple of years from now, you'd do it yourself.
Reply With Quote Quick reply to this message Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Outboard Mount and the transom of a Cal 20 lostcoast Cal 9 03-04-2013 01:26 PM
transom outboard backing board tmalcolm Gear & Maintenance 11 06-17-2010 02:19 PM
Repowering with an outboard? MattGardner Gear & Maintenance 14 08-19-2008 06:03 AM
Transom Cutout for Outboard...Problems? Gillfowdy Sailboat Design and Construction 9 04-02-2008 09:48 PM
transom ladder installation alibi Gear & Maintenance 4 08-06-2004 07:15 PM


All times are GMT -4. The time now is 06:42 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.