TinBoats.net
The original aluminum boat site!
Forums
New posts
Search forums
Blog
What's new
New posts
New media
New media comments
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Boats
Motors
25hp Powerhead on an Evinrude 18hp, Any OMC guys here?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support TinBoats.net:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="Pappy" data-source="post: 463037" data-attributes="member: 3278"><p><span style="font-size: 18px">Here are some of the issues you may run into. </span></p><p><span style="font-size: 18px">Apparently the base gasket will fit as has been mentioned. </span></p><p><span style="font-size: 18px">The crank splines need to be verified</span></p><p><span style="font-size: 18px">The length of the driveshaft will need to match up or see if the gearcase from the 25 will bolt up. Very often the driveshaft length or the exhaust housing length will stop you. </span></p><p><span style="font-size: 18px">The shift shaft needs to be verified as well as the water tube locations and shape (bends).</span></p><p><span style="font-size: 18px">You may need to do some mixing and matching of other components. </span></p><p><span style="font-size: 18px">Also, place the powerhead on the midsection and see if the 18hp cowl fits okay before you go much farther. </span></p><p><span style="font-size: 18px"></span></p><p><span style="font-size: 18px">I did put a 1974 40hp powerhead on a 1957 35hp exhaust housing/split cowling for fun but it was no box of chocolates with all the changes I had to make there. </span></p></blockquote><p></p>
[QUOTE="Pappy, post: 463037, member: 3278"] [size=5]Here are some of the issues you may run into. Apparently the base gasket will fit as has been mentioned. The crank splines need to be verified The length of the driveshaft will need to match up or see if the gearcase from the 25 will bolt up. Very often the driveshaft length or the exhaust housing length will stop you. The shift shaft needs to be verified as well as the water tube locations and shape (bends). You may need to do some mixing and matching of other components. Also, place the powerhead on the midsection and see if the 18hp cowl fits okay before you go much farther. I did put a 1974 40hp powerhead on a 1957 35hp exhaust housing/split cowling for fun but it was no box of chocolates with all the changes I had to make there. [/size] [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Boats
Motors
25hp Powerhead on an Evinrude 18hp, Any OMC guys here?
Top
