Since we're on the same subject, what advantage is there in having a valve on the engine's outlet?

The more I think about it the less I can see as to why it's even there.

I read somewhere to slow the water down so to control the temperature a little. In CT. the water is cold in the early Summer so I guess adjusting the valve to slow the water down to build a little more heat.
Maybe Tom or Josh can respond.

T.J.

Slowing the water down in the block outlet creates pressure. You don't want freeflowing water coming in and out. THere is a good possibility for hotspots and it does not cool at well.

great news fellas!!!! I put my boat in the water for the first time in 6 months.  A few reasons why.   one because of the lake level (TOm, I agree...I am ready for a civil war with AL and FL).  But.....I changed alot of stuff on my boat over the wiinter...wiring, plumbing, new brackets, etc... and knock on wood, it ran like a glove (knock on wood).  See I am not as fortunate as you Socals, with year round boating (god bless you all).  Anyway, the boat ran great.  

i guess I need to explain to all why my boat and lake lanier mean so much to me.  The picture you see is my best friend in the world, that always wanted to go with me and raise HELL every time I asked him to go to the lake.  The only one that would hang around to help me clean up my houseboat after empty caiges are rolling around on the roof.  Long story short.  He unexpectidly passed about a year and half ago.  It was and is bitch to deal with!!!!   Anyway.. we dropped his ashes in lake lanier because thats what he wanted.  We had a huge ceremony while we did it.  But, now, it is so special to go up there and just float.....watch the sunset and drink a few beers with my boy!!!

I hope I am not sound ing crazy, becasue I am not, i  can assure you of that.  I am just so stoked that everything worked out OK with my boat and I was able to spend time with my boy!!!

Again,  I cannot that you all for all of your great ideas suggestions!!!

TJS Nordic....I am extremely impressed with your boat.  absolutely beautiful!!!!

Again......even tonight, i had one weep hole dripping water directly above my starter, all other weep holes are dry.   Any ideas.

If there is less water coming in the block, isn't there less water going out of the block?

The only thing a valve on the outlet side can do that the valve on the inlet can not do is add more water pressure inside the engine (excepting Banderlogs, by-passes, etc...).



WORD I'm sorry to hear about your bro. Godspeed.


Good to hear about your boat doing well, congrats!

are you talking about these, see below???   and is it kinda crazy that the problem is in one weephole

hotrod56cars - Thank you so much for the kind words.   Not sure who out there has lost a buddy that close to them, but it is helllllllllllll. (and if you have, I am sooooooooo sorrrry!!!!!!0..   It is so refreshing pulling my boat in the cove where we dropped his ashes, killing the engine, and putting down a few 12 packs with him. 

WORD,
 Sorry about your friend. I like how you pay tribute.
Here is the water diagram I follow. I do have a dump valve connected to the T-stat housing. I do not run a basset T-valve. The picture is just a spiltter to both headers. I set the amount of water coming out of the headers with the little adjustable meetering valve where I just get steam. I could make them a little wetter if I need to.
Picture courtesy of banderlog.

Another cool idea is the LPHV (low pressure high volume) cooling system. It utilizes full unrestricted water flow into and out of the engine, but uses a water bypass regulator set to 12psi to drop the water pressure down, allowing you to be able to run full water volume to the engine without overpressurizing. It also uses a marine thermostat setup to keep temperature constant no matter what the water temp is.

Your header water with this setup is plumbed off of the intake manifold's water crossover. A gate valve goes in between the T valve and the crossover. If the gate valve is set correctly, your headers will shut off at idle and when they do come on you'll have just enough water to create steam coming from the headers. If you have too much water to the headers that also means they're not shutting off at idle with this type of system. Once your header water and your bypass regulator are set, you'll never need to adjust the whole system again...it runs itself. Plus you'll have constant temp readings regardless of your RPM.