Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 27-08-2017, 03:13   #1
Certifiable Refitter/Senior Wannbe
 
Wotname's Avatar

Cruisers Forum Supporter

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: Van DeStat Super Dogger 31'
Posts: 8,076
Wet Liner - Best Paint???

What is best practice regarding painting a wet liner before fitting to the block / crankcase?

The engine in question is a raw water cooled single cylinder Yanmar (YSE-8). One service manual requires the liner to be painted before installation with an "anticorrosive" paint. Another manual requires the sealing lip (at the head end) to be painted with "white" paint during insertion of the liner. Neither are more specific regrading detailed paint type.

It would seem to me that any paint suitable for underwater use on a steel hull should be suitable for the liner and perhaps the paint is not that important except for use on the top sealing lip. The rest of the cast iron crankcase has minimal paint protection in the water galleries and relies on the anode for corrosion protection. FWIW, water temperature is around 50C (~120F).

Thoughts???
__________________

__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is online now   Reply With Quote
Old 27-08-2017, 03:42   #2
Registered User

Join Date: Jun 2017
Location: Subic Bay Philippines
Posts: 539
Re: Wet Liner - Best Paint???

My Yanmar rebuild book for the engine says to "apply sealing paint or grease" to the outside lower part of the sleeve where the packing (o-rings) seal the sleeve against the block.,

This is always about the interference fit and or damage to the O Rings or landing area's metal to metal and sealing, Any engine where I have replaced wet liners I use Silicon O Ring lube for the O ring area's and other lower or general metal area's coat with DURALAC (mixed with a little Silicon grease) as it will seal and provide long term corrosion protection,

https://www.fisheriessupply.com/sadd...nting-compound

Another tip is place the liner in your freezer the night before, then add the O Rings/Silicon grease/Duralac and insert ASAP

Once you have Duralac there's thousands of vessel applications/every boat owner should own a tube on there boat

Cheers Steve
__________________

Captsteve53 is offline   Reply With Quote
Old 27-08-2017, 03:50   #3
Certifiable Refitter/Senior Wannbe
 
Wotname's Avatar

Cruisers Forum Supporter

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: Van DeStat Super Dogger 31'
Posts: 8,076
Re: Wet Liner - Best Paint???

Quote:
Originally Posted by Captsteve53 View Post
My Yanmar rebuild book for the engine says to "apply sealing paint or grease" to the outside lower part of the sleeve where the packing (o-rings) seal the sleeve against the block.,

This is always about the interference fit and or damage to the O Rings or landing area's metal to metal and sealing, Any engine where I have replaced wet liners I use Silicon O Ring lube for the O ring area's and other lower or general metal area's coat with DURALAC (mixed with a little Silicon grease) as it will seal and provide long term corrosion protection,

https://www.fisheriessupply.com/sadd...nting-compound

Another tip is place the liner in your freezer the night before, then add the O Rings/Silicon grease/Duralac and insert ASAP

Once you have Duralac there's thousands of vessel applications/every boat owner should own a tube on there boat

Cheers Steve
Thanks Steve.

I have the Duralac. I plan to use the freezer and also to have the block comfortably warm (say 40+C).

What of the top lip fit, paint or more Duralac?
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is online now   Reply With Quote
Old 27-08-2017, 04:18   #4
Registered User

Join Date: Jun 2017
Location: Subic Bay Philippines
Posts: 539
Re: Wet Liner - Best Paint???

I would go with the Duralac as it far out weighs " the ambiguous paint" in benefits such as sealing and corrosive actions, again i usually dilute a little if the Duralac is getting old and a bit stiff, again with a very small addition of silicon grease or oil , if the tube is new no worries

Cheers Steve
Captsteve53 is offline   Reply With Quote
Old 27-08-2017, 04:20   #5
Certifiable Refitter/Senior Wannbe
 
Wotname's Avatar

Cruisers Forum Supporter

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: Van DeStat Super Dogger 31'
Posts: 8,076
Re: Wet Liner - Best Paint???

^^ makes sense
__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is online now   Reply With Quote
Old 27-08-2017, 06:55   #6
Registered User

Join Date: Feb 2013
Location: Lago de Izabal, Guatemala
Boat: Seafarer36c
Posts: 4,526
Re: Wet Liner - Best Paint???

Red Rust-Oleum primer is considered suitable for the interior of an engine.
__________________

Ecos is offline   Reply With Quote
Reply

Tags
paint

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Stripping paint from textured fiberglass cabin ceiling liner? Cyrus Safdari Construction, Maintenance & Refit 2 21-05-2017 14:03
Hull Liner, Head liner and insulation henklor Challenges 13 19-05-2017 17:08
Urethane Bed Liner As An Alternative To Topside Paint? Mikado Construction, Maintenance & Refit 50 26-02-2017 04:38
Truck Bed Liner Paint Jmolan Construction, Maintenance & Refit 15 02-05-2009 18:40



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 06:00.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.