? 460 Thermostat ?

[Ken F]

Who makes a 460 thermostat?
I've searched REX & CP Performance sites and can't find them listed anywhere.
I'm needing the plumbing diagram.
Thnaks,
Ken F

[BigBlockBaja]

Ken, I sugest the one made for 454's and 455's.. With very slight modifacation it will work with the BBF.. I got one on mine and my motor stays at a constant 160-180 all day.

[Oldsquirt]

Ken, I scanned this out of an older CP Performance catalog.
Boat is looking real nice! I guess they must be getting ready to reinstall and plumb the engine. :D
http://www.hotboatpics.com/pics/data/500/3633460T-stat.jpg

[Ken F]

BBB, thanks, but I already bought one several years ago, but can't remember who I bought it from! (CRS disease)
Anyone recognize this?
Ken F
http://www.hotboatpics.com/pics/data/500/5520DCP_4123cr.jpg

[Oldsquirt]

Originally posted by Ken F
Anyone recognize this?
Ken F
Ken, that looks like the HardinMarine Ford 460 t-stat kit, part # 620-50460, in the 2002/2003 CP Performance catalog. Oddly enough, that catalog has a pic of the parts. It was an earlier catalog that had the plumbing diagram I posted above.

[Ken F]

Great OS! You are my hero!
That is exactly the one I was looking for.
Thanks for the compliment, and yes, they are beginning final assembly. I'll post pics of todays progress in just a minute.
Thanks for your help!
Ken

[AmericanThunder1]

I must be missing something because I have no thermostat:eek:
Is this bad:eek: I do run only 120 but I thought cool engine longer life hotter engine better performance but shorter life:confused:

[Ken F]

AT-
Yes, I would sure suggest running one for these reasons:
At 120 your oil really is not warm enough to lubricate & flow properly. It is not really warm enough to overcome the buillt-in tolerences for your engine parts to expand and fit properly. You will get much better combustion running warmer also. I'm sure there are others, but there are 3 good ones.
Ken F

[riverbound]

I used the one that Rex sells for the 454. You do hsvr to grind on it a lot to make it fit. Its even worse if yousre running an aftermarket manifold. But IMO it is worth it my boat stays @160 all day. Theres is a lot more plumbing involved also (instead of 2 hoses coming off the top there is now 4)

[Ken F]

Old Squirt, can you explain something?
In the diagram above, what keeps the incoming water from bypassing even when the thermostat is open?
There is no way for the thermostat to block off the flow to the bypass like there is on the Chebby & Olds kits. Seems to me that since water is going to take the path of least resistance...the bypass is where it's going to go. I know the unit works cause I've had it for several years.
I just don't understand after thinking about it! lol
Ken F

[Oldsquirt]

Ken, as I looked at the diagram and the pic last night, I was wondering the same thing. All I could come up with is that once the t-stat opens, there is actually less resistance through the engine than there is through the single small bypass hose. Purely conjecture, though. I wonder if, since you are using Duane's bypass-style regulator, you couldn't eliminate the bypass hose in the t-stat setup?

[Ken F]

Hmmm....interesting thought. So you are thinking that the bypass hose is meant to regulate water pressure to a degree?
The setup seems to work fine running the pressure regulator, and the thermostat set-up. Dunno..we'll just have to see.
Thanks for your thoughts!
Ken

[82SleekCraft]

Isn't the thermostat setup supposed to let water go to the bypass hoses when cold, and to the motor when hot? A partially warm motor should proportionally divert water to the motor and bypass hoses.

[Ken F]

82 thats the only thing I can see. kind of strange...but it seems to work.
ken

[adsala]

I have the exact same setup as in the pictures. Never had any problems with cooling. However, the temp does vary from 140-180 during normal usage.
It looks like, when cold, most of the water deverts to the exhaust. I've often worried about cold water running through the hot exhaust. My boat is a 1981 and the exhaust manifolds are still in very good condition. Knock on wood. I believe I got the thermostat from CP. But I've used a standard automotive thermostat as well. No problems. I think CP's version has a small hole drilled in it. Hope this helps. If you need a close up picture of my setup, let me know.

[Ken F]

Dean,
Great job on the boat! Looks great now!
I just sold the exact same boat, except mine was an Omega. After quite a few years & tons of money I was finally able to reach 72.4 mph by GPS. That's when I decided it was time to move on to something with a little more speed potential. I know we are going to miss the room these boats have inside.
Ken F

[AmericanThunder1]

Thanks Ken, I will put one in as soon as I get my new intake.

[Hallett19]

when I run in cold water, I barely even come off the peg on the water temp guage but my oil has no problems getting up to 260-280 degrees. As far as the temp in the heads goes, if you are running 120-150, which is where my boat usually runs and your oil temps are above 220, you are running fine. Most any builder will tell you temps at 180 for water temp are the best, but if you are at 150, you are only 30 degrees off, not too bad. When I restrict the water to my motor and get it up to 180, my oil goes to the end of the oil temp guage, 300 + !!!

[hack job]

when on the dyno , we made more hp with the motor cooler ( water temp) we would warm up the motor( ie. the oil) and then shut it down( high powered fans cool the motor ) and then after a min or two fire up the motor and do the run. i was also told to keep my temp around 150 the motor would make more hp. hints the reason i have no thermostat;) and i have never had a problem;)