Boats For Sale:
Manifold drain cocks |
Post Reply 
|
| Author | |
ultrarunner 
Platinum Member 
Joined: October-02-2005 Location: Ridgefield, Ct. Status: Offline Points: 1854 |
 Post Options
 Thanks(0)
 Quote Reply
 Topic: Manifold drain cocksPosted: October-07-2024 at 12:30pm |
|
For those that have done it, can I see a pic of your setup? Thanks, Mark
|
|
 |
|
|
Jonny Quest
Grand Poobah 
Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 2992 |
Post Options
Thanks(0)
Quote Reply
Posted: October-07-2024 at 4:34pm |
|
Mark:
On my 2 previouis boats with the 5.8 Small Block Ford, I used these:  I purchased them from McMaster-Carr: https://www.mcmaster.com/products/petcocks/drainage-valves-5/ I had one for each side of the block and one for the U-Bend (J-Bend) in the raw water system. I also replaced the cast iron plugs with brass plugs at the ends of the exhaust manifolds/risers. JQ |
|
|
Current
2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
|
|
|
|
KENO
Grand Poobah
Joined: June-06-2004 Location: United States Status: Offline Points: 11140 |
Post Options
Thanks(0)
Quote Reply
Posted: October-07-2024 at 7:33pm |
|
|
|
wayoutthere
Senior Member 
Joined: February-28-2020 Location: Florida Status: Offline Points: 489 |
Post Options
Thanks(0)
Quote Reply
Posted: October-07-2024 at 9:35pm |
|
Question about this, if your installing drains on the rear of the exhaust manifolds,
I noticed quite a large build up of silt on the 79 behind those 1/2 drive plugs, granted maybe from lack of service being an orlando boat. How about routing the cooling hoses to the rear of the manifolds ? My thought is it will always flush silt out and pop the hose off for winterization, like to know if thats an option good or bad. |
|
|
|
|
uncle-buck
Senior Member
Joined: June-14-2004 Location: United States Status: Offline Points: 331 |
Post Options
Thanks(0)
Quote Reply
Posted: October-08-2024 at 4:29pm |
|
I purchased a set of drains from SkiDim several years ago. One for each exhaust manifold, one for each side of the engine block, and one for the U under the thermostat. They have worked well.
    |
|
|
1990 Ski Nautique (original owner)
PCM 351W with D.U.I. |
|
|
|
|
TRBenj
Grand Poobah
Joined: June-29-2005 Location: NWCT Status: Offline Points: 21189 |
Post Options
Thanks(0)
Quote Reply
Posted: October-08-2024 at 4:58pm |
|
I wouldn’t use those… can’t probe anything. Asking for problems.
|
|
|
|
|
Jonny Quest
Grand Poobah
Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 2992 |
Post Options
Thanks(0)
Quote Reply
Posted: October-08-2024 at 8:42pm |
|
I like the drain petcocks for the engine block and raw water J-bend. I agree with many that have voice opinions here that a "plug" at the end of the exhaust manifold/riser is a good way to go so that one can really flush out the gunk that can collect there.
In the PCM / CC owners manual, it calls for flushing out of the exhaust manifold/riser with a garden hose on the front end and having the flush water exit the at the rear. JQ
|
|
|
Current
2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
|
|
|
|
Post Reply
|
|
Tweet
|
| Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |
Topic Options