I have owned my own Race and performance business for over 40 years, written over 50-60 magazine articles for several Performance car and boat magazines, had a tech column, still write for Industry only magazines, not monthly newsstand stuff. I was guilty of oversimplification in some statements. There is no reason for me to banter semantics with anyone. Refer to my last post: "It must be worth my time."

I will not post in this thread again, but in my defense, "over simplification" and just out right "incorrect information" has too large of a delta for me to let stand.

For anyone else on here, from now forward, I will only point out what is wrong with some information and it will go no further. Didn't mean to single anybody out.

I used to provide feedback for Mercury Marine back in the day for service bulletins and warranty procedures. I helped out Fineline Industries (makers of the Ski Centurion line of boats) with the first few Yamaha powered boats they built.
I came up with a fix for a problem that Yamaha Marine had with their inboard outboard line of marine engines that they struggled with for over two years (a mere lifetime when you consider how many engines they built).

Mercury Marine Master Certified mechanic.
Yamaha Marine Master mechanic.
Johnson, Evinrude, OMC Certified technician
Caterpillar Marine Certified Technician
Foruno (radar) Certified installer
Chrysler Driveablility, fuel injection and passive restrain technician
Certified Welder/med gas
Trane chiller tech
Attempting to achieve an AS in Science. (spare time thing.).

It was worth my time because I am very passionate about doing it right or not at all. If the information is out there, it needs to be correct and concise. Otherwise it's just words.

The reason I joined this forum so many years ago is because there seemed to be some people on here with many of the same interests I had and noticed how many owners were struggling with something so simple. It was always second nature for me.

The only reason I posted my resume' is because you seemed to think it was necessary.

I don't doubt you have a ton of knowledge, that was never the point, you don't need to defend your character to me or anyone else, but these are smart folks on here, you are not going to be able to "phone one in".

Sorry I pooped in the sandbox folks...

Brad, sorry man.. 

GT

Fu*k it... I'm going Air Cooled

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Google Jim Coffey.  He use to work for Berkeley jet he is the best pump builder and he has built many performance engines.  Brad from JetBoat Performance recommended him to me a few years back and he's the man.  He has info about the water temp/ pressure topic.  He showed me now I'm sharing the love so go look it up gather info and before u decided Google "gate valve" you will read Not recommended to regulate flow; not my opinion, its a fact. Anyway look up Jim Coffey water pressure

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Yeah that's the same info he gave me.  I talked to Jim directly and it took a lil while to understand and visualize but top notch setup after understanding and run on my boat. 

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Someday Im going to start an historic epic thread like this on plug reading, oil temp, header diameter size, and size of cup holders and how many are needed.

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All it does is relieve excess pressure doesn't control flow homes


How many times you gonna smack a dead ho?

Sorry I tried to read it but it just gave me a head ache. All the pissing and moaning I thought I was reading a thread on a different site. Actually had to check and make sure I was on SCJB site because I rarely see that kind of bickering here. That's what makes this site such a pleasure to be a part of. All of us on this site are here for each other. Lets leave the pissing contest for the other sites. JMPO


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I will not post in this thread again, but in my defense, "over simplification" and just out right "incorrect information" has too large of a delta for me to let stand.

For anyone else on here, from now forward, I will only point out what is wrong with some information and it will go no further. Didn't mean to single anybody out.

I used to provide feedback for Mercury Marine back in the day for service bulletins and warranty procedures. I helped out Fineline Industries (makers of the Ski Centurion line of boats) with the first few Yamaha powered boats they built.
I came up with a fix for a problem that Yamaha Marine had with their inboard outboard line of marine engines that they struggled with for over two years (a mere lifetime when you consider how many engines they built).

Mercury Marine Master Certified mechanic.
Yamaha Marine Master mechanic.
Johnson, Evinrude, OMC Certified technician
Caterpillar Marine Certified Technician
Foruno (radar) Certified installer
Chrysler Driveablility, fuel injection and passive restrain technician
Certified Welder/med gas
Trane chiller tech
Attempting to achieve an AS in Science. (spare time thing.).

It was worth my time because I am very passionate about doing it right or not at all. If the information is out there, it needs to be correct and concise. Otherwise it's just words.

The reason I joined this forum so many years ago is because there seemed to be some people on here with many of the same interests I had and noticed how many owners were struggling with something so simple. It was always second nature for me.

The only reason I posted my resume' is because you seemed to think it was necessary.

I don't doubt you have a ton of knowledge, that was never the point, you don't need to defend your character to me or anyone else, but these are smart folks on here, you are not going to be able to "phone one in".

Sorry I pooped in the sandbox folks...

Brad, sorry man..  :-

GT

Awesome! Lol you rock GT!!

sent from my smarter than me phone

Okay so I read this entire thread...my god you fellas are hella passionate!! Lol so why not just put a ron Davis 6 core radiator,  a dual 12" electric fan setup and just run plumbing from the jet pump to the headers and put a gate valve in between the pump and headers for flow control?

Meaning, build a motor that is spec'd out somewhere in between a street motor and a marine motor and run a closed loop "automotive style" cooling system?

You'd eliminate the sand in the engine all together and you'd have consistent, variable flow, accurate water pressure. You could run any temp tstat, a modified stat (purge holes), or no stat at all. A radiator cap will control your pressure and you'd have a lot less plumbing to fail.

GT AND jet fever...please share your opinions..im calling you two out because you guys seem to get along best lol

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ive always wondered this too. Seems too easy haha

Okay so I read this entire thread...my god you fellas are hella passionate!! Lol so why not just put a ron Davis 6 core radiator,  a dual 12" electric fan setup and just run plumbing from the jet pump to the headers and put a gate valve in between the pump and headers for flow control?

Meaning, build a motor that is spec'd out somewhere in between a street motor and a marine motor and run a closed loop "automotive style" cooling system?

You'd eliminate the sand in the engine all together and you'd have consistent, variable flow, accurate water pressure. You could run any temp tstat, a modified stat (purge holes), or no stat at all. A radiator cap will control your pressure and you'd have a lot less plumbing to fail.

GT AND jet fever...please share your opinions..im calling you two out because you guys seem to get along best lol

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You could just run a water to water heat exchanger, that's the proper way to do it. San Juan makes a really nice kit for a 454 for under $900.

The reason the radiator idea hasn't taken off is because of the lack of real estate. A San Juan is only 6" in diameter and about three feet long. You have three of them, one of them has an oil cooler built right into it.

The final set up on the rock dodger had a closed system in it. We dumbed it down a lot from what they normally run and made it as simple as possible, the water was controlled by a valve on the dash because the race boats required two persons in the boat at all times, when we first started in the sport there had to be three.... A driver, a mechanic and a navigator...   

GT

Ive seen the san Juan setup and it looks like that system uses a  pickup either fro the pump or it uses a belt driven auxiliary water pump to feed the san juan...correct me if im wrong but it seems as if it would be very simple to mount a full size automotive radiator and engine driven water pump thus completely separating the jet pump from the engine. From there it seems like one could control the water baffling the headers with much more ease and way less guess work.. my frame or reference is from NASCAR.  they run 9000 rpms all day long (most of them lol) on a closed loop system.

I sincerely apologize to the guys that have been using the gate valve system forever but it seems like there is way too much guesswork.. :/

Your turn GT lol

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Yeah, but that set up would require a huge rebel flag painted on the deck of the boat and I'm just not too hip on the idea of trying to figure out how to place the radiator without having a 40' cruiser.... Besides, if you have a virtually unlimited supply of 50-70*F water, why on earth would you go air cooled? Absolute waste of effort IMHO.

Volley!

GT

Tag!

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Not It!   

GT