BBC thermostat help ???

[nater1823]

Help me out please! Anyone out there use a t-stat successfully? I don't use one now, but would like to. My concern is that when the stat is closed on startup, the engine would get some pretty nasty hot spots due to air trapped behind the t-stat:confused: . Seems to me without somewhere for that air to go while the water is being pushed in, it could cause the cooling system to air lock:jawdrop: . I'm still pretty new to jets, so I don't necessarily know what i'm up against here.
I could be waaay off in left field:)

[patrolman808]

I'm going to use a 160 thermostat and drill two 1/8" holes in the housing to let the air escape, and allow a small amout of water to pass by before the t-stat opens up.

[GUGS102]

The housing to use is the one with four connections. The top two alieviate(sp) your concern. I have this set up and have had no problems. The top two go to a "T" on each water port on the front of the block.
Gugs

[4trax]

Help me out please! Anyone out there use a t-stat successfully? I don't use one now, but would like to. My concern is that when the stat is closed on startup, the engine would get some pretty nasty hot spots due to air trapped behind the t-stat:confused: . Seems to me without somewhere for that air to go while the water is being pushed in, it could cause the cooling system to air lock:jawdrop: . I'm still pretty new to jets, so I don't necessarily know what i'm up against here.
I could be waaay off in left field:)
One of the ways to do it.
http://i144.photobucket.com/albums/r162/4trax67/Boat%20parts/100_1890.jpg

[Nubbs]

I'm running the t-stat from Rex Marine. So far so good.

[LuckyDaze]

One of the ways to do it.
http://i144.photobucket.com/albums/r162/4trax67/Boat%20parts/100_1890.jpg
How well does this setup work? I have a rex marine thermostat setup too and was thinking about using it but have no idea how to plumb the darn thing.
~Brian

[Taylorman]

The picture above should be all you need.

[4trax]

It works awesome! Plumb it just like this unless you have logs then use the bottom 2 hose's to the logs and out. This has dry headers so I plugged one and dump the other over board back to the lake:D Just remember the 2 hose's from the block go to the top of thermostat and the bottom 2 hose's go over board.
Maybe this will help also.
http://www.cpperformance.com/Instructions/540-160200.pdf

[centerhill condor]

I'm going to use a 160 thermostat and drill two 1/8" holes in the housing to let the air escape, and allow a small amout of water to pass by before the t-stat opens up.
this is as stated on the performance jet talk web site. I did this over a year ago in conjunction with an automatic pressure reducing valve and have been very pleased. The system, as stated, makes water temp and pressure a "NON-ISSUE" so that I may focus my educated analytical skills on other issues such as throwing the ball for the dog or applying the proper amount of oil to the wife's body in sufficient quantity and skill for proper enjoyment of her many charms.
Prior to the previously listed solution, the condor's water temp was never "right" and somewhat distracting. Others prefer different methods as they're entitled.

[Taylorman]

What kind of pressure reducing valve do you have?

[4trax]

What kind of pressure reducing valve do you have?
http://i144.photobucket.com/albums/r162/4trax67/Boat%20parts/100_0782.jpg
http://i144.photobucket.com/albums/r162/4trax67/Boating%20members%20boats/100_1484.jpg

[patrolman808]

That's the same one I'm installing, along with a pressure gauge on one of my intake manifold outlets.

[DMOORE]

[QUOTE=centerhill condor;2495661] The system, as stated, makes water temp and pressure a "NON-ISSUE" so that I may focus my educated analytical skills on other issues such as throwing the ball for the dog or applying the proper amount of oil to the wife's body in sufficient quantity and skill for proper enjoyment of her many charms.
Classic.
Darrell.

[SmokinLowriderSS]

Something I saw here on the board arround a year ago was this:
A guy had a perfectly good running lake-boat, running non-t-statted cooling (old school).
He decided t-statted was going to be better, and set it up at 170*F.
Promptly melted at least 1 piston, detonation, because he was running a pretty high CR, but the cooler engine temps (140 or threrabouts) was keeping the detonation monster just at bay. The higher head temps triggered the detonation that melted him down.
So consider the rest of the engine's build and pre-existing running conditions as well to make sure you are SAFELY raising and stabalizing the engine temp and not creating a problem.

[sanger rat]

Something I saw here on the board arround a year ago was this:
A guy had a perfectly good running lake-boat, running non-t-statted cooling (old school).
He decided t-statted was going to be better, and set it up at 170*F.
Promptly melted at least 1 piston, detonation, because he was running a pretty high CR, but the cooler engine temps (140 or threrabouts) was keeping the detonation monster just at bay. The higher head temps triggered the detonation that melted him down.
So consider the rest of the engine's build and pre-existing running conditions as well to make sure you are SAFELY raising and stabalizing the engine temp and not creating a problem.
Yup, If you are seeing 140 or so on the guage the block is hotter than that in there. 140 is just the temp of the water leaving the motor.

[hallett72]

Hey guys were would a guy find a pressure regulator like that. I can't find one on Jetboatperformance.com or danamarineproducts.com

[4trax]

Hey guys were would a guy find a pressure regulator like that. I can't find one on Jetboatperformance.com or danamarineproducts.com
http://www.mcmaster.com/

[patrolman808]

I found mine on Ebay. It was made for agricultural use, for some kind of sprayer. I'll find a link and post it up. Gave like $20 for mine.

[patrolman808]

http://www.teejet.com/MS/TeeJet/product_Detail.asp?ID=245&SUB=true

[4trax]

I found mine on Ebay. It was made for agricultural use, for some kind of sprayer. I'll find a link and post it up. Gave like $20 for mine.
http://www.teejet.com/MS/TeeJet/product_Detail.asp?ID=245&SUB=true
Those are to high of PSI. You don't wanna run anymore then 12-15 PSI max.

[centerhill condor]

Hey guys were would a guy find a pressure regulator like that. I can't find one on Jetboatperformance.com or danamarineproducts.com
performancejet.com
old jim sold me one of his..comes pre set for whatever the right pressure is.

[brad22]

This is the way to go, www.cpperformance.com (http://www.cpperformance.com/detail.aspx?ID=697)

[brad22]

Pressure T Valve (http://www.cpperformance.com/detail.aspx?ID=521) Says its for intercooler but will also work for Jet application. Adjustable too.

[patrolman808]

Those are to high of PSI. You don't wanna run anymore then 12-15 PSI max.
Mine is adjustable from 0-300 psi. I'm putting a pressure gauge on my intake as well to dial in the pressure.

[4trax]

Mine is adjustable from 0-300 psi. I'm putting a pressure gauge on my intake as well to dial in the pressure.
There ya go then:)

[nater1823]

Thanks to everyone for the helpful input. Happy boating:) !!

[thmper321]

Just changed the heads to SCJ Ford and now the motor spins faster thus creating motor water pressure in the motor thus creating a head gasket leak. Putting the pressure bypass in this weekend with a pressure guage on the intake. Father in law said he needed two pressure reliefs to get his water pressure down. He was seeing 30lbs before he added them.