PVC Exhaust

How much money would you back that up with? I know you not an engineer but maybe your a gambler.

PAR does'nt think it will get out of the Dock.

 

And neither do I. My gut tells me that the most likely failure will occur under low water flow conditions...like idle. If you manage to make it out of the harbor, make sure you have another boat standing by...just in case.

I did spend a few years living in Vegas, and found there's more then one kind of gambler. There's the guy that tries to pull to an inside straight (he thinks Luck is on his side, and there's the guy that plays his hand according to the odds, and does everything he can to increase his chances of winning. I'm more like the later...I like increasing the odds in my favor, and hate doing something stupid thinking Luck is going to pull my @ss out of the fire.

What kind of gambler are you?

MM

 

Let him start it up, pull the engine up to temperature and shut it off after reving it up several times. This should get that turbo hot enough to cook the pipe off pretty quickly, saving him some embarrassment a few miles out, when he realizes he's taking on water and exhaust gases.

Water can rise over 100c, water vapor considerably higher, but as pointed out, this isn't the concern. The exhaust gases are in the 1,200F range at the port and when the engine is shut down, one or more exhaust valves will be open or partly so. The heat will dump into the exhaust and bye bye pipe. The glowing red turbo will just expedite the process.

I'll take the bet, as he has absolutely no chance of success with this kind of rig, even with the isolation from a bit of hose shown in the picture.

 

Yah, thats a bad exhaust system.

 

Ille wager 100,000 dollars, your all very wrong.

If some one can figure out the finances of it im on for 100k

Granted it looks a bit domestic --shall I wrap some silver sound insulation round it.

Come here open an account TT in 100K

I'lle do the same. we will get a third party to hold the money. we shall take the boat out and hold at 3800 RPM for 20 minutes that will be nearly the end of the harbour. If it has melted or smells hot or bubbles ille give you 100K.

None of you know what you are talking about I love a little bet, I hope im right ---maybe im wrong.

 

First thing I see is that there is no pipe barb on the flex to PVC joint. Then consider that the PVC is under compression by the hose clamp. As soon as you shut the engine down the residual heat will soften the PVC , the clamp will compress the PVC and the joint will fail.


Rubber exhaust hose is designed so that if you overheat it and ruin the rubber, its fabric reinforcement prevents the hose from blow out and the wire reinforcement keeps the hose from collapsing. PVC has no reinforcing

Also I see no way for engine vibration to escape from the exhaust system. The flex link is way to small. The whole system will be vibrating , jumping around, chafing and is going to fail.

Also with those sharp 90 degree bends be careful that water doesn't fill the tube and back flow into the engine.

 

I'lle start to clean under the boat then and get it ready for a test run!!

when are you coming?

There is no mountings on the pipe at all, it is just held by its clamp and the outlet only,--- that is allowed to move in the hull.

There is 6 to 8 inch of 85 mm stainless pipe with 3 bolts holding it in the PVC I explained this previously) no barb on the stainless pipe but there is one on the turbo outlet. There is no back pressure on a 90 mm pipe only 4 feet long.

On stopping the engine residual water will collapse to the bottom where it can be drained for a dry exhaust.

Will you be transfering the money or will you bring travellors cheques.

On your arrival I will T/T the 100 k into my account here on the island.

We will both sign transfer slips from yours to mine an mine to yours.

Third person can be your choice.

The slips will change hands at the end of sea trials.

26th 27th Nov would be fine. Langkawi Geo park royal langkawi yacht club -- you need to get to Kuala Lumpur.

No one else 100k each --- no one can back up there engineering fantasies.

 

The tech sheet for heat handling with plastic pipes state

PVC (Polyvinyl Chloride) Schedule 40 = (White) 140 F

ABS (Acrylonitrile butadiene styrene) (Black) Schedule 40 = 160 F

PVC (Chlorinated Polyvinyl Chloride) (tan) Copper Tube Size = 180 F

CPVC (Chlorinated Polyvinyl Chloride) (Gray) Schedule 80 = 200 F

PP (Polypropylene) Schedule 40 = 230 F


Obviuosly if you dont start the engine your system will perform perfectly !

 

You and every one else obviously knows nothing of wet exhausts. You are all very wrong and spout this stuff out like it is true.

Im sorry but you dont know what you are talking about.

Look at the stats you have posted,--- now how hot does exhaust water get?

Please no more dreaming or --I think this or that do some experimentation.

Some forum readers depend on what is written for thier builds.

Whats been written here about it such as a PVC system wont get out of the dock or idle is utter fabricated fantasy.

 

Hey , nothing wrong with being a test pilot .


Take your protien pills ,put your helmut on and go for it !!!!!!!!!!!!!!!!!!!!

THIS IS GROUND CONTROL...COME IN FROSTY....COME IN FROSTY........

 

Instead of proving what you obviously don't know, just start it up a wait. It will not take long. I've bent PVC pipe hundreds of times, with heat a fraction of what that setup will see. So, instead of your get rich quick scheme, just start it up.

 

Hi Frosty, do your friend a favor & get him to email or call Brad, here............................. http://foreshoremarineexhaust.com/

Jeff.

 

Jeff, Frosty likes this sort of thing. He typically ignores common sense, reality and physics, preferring to bluster imaginary arguments, simply for argument sake. He's repeatedly refused to accept common understanding, about hydrodynamics or elemental physics, instead spouting off about unquestionably flawed concepts. This is a classic example of Frosty's efforts. No one in their right mind, would consider this a reasonable setup and you'd be towed back to a dock, if boarded and inspected by any reasonable harbor patrol or USCG officer. You couldn't find any professional willing to back such a contrivance, yet he defends it, declaring any and all that suggest it's flaws as uneducated. He has some skills, but really should stick with what he knows or taken with the whole salt shaker, rather then just a grain, when he's on one of his ridiculous rants about the latest absurdity, that he's incapable (or unwilling) of rationally or logically supporting. Of course the setup being illegal, doesn't matter to him either.

 

I am offering 100k if it melts PAR I am sure of my work If you are sure of yours take the bet.

Get your finest American lawers what ever you want back up your big talk with your money.

I know what I am talking about far more than you can imagine. You are misleading this forum and filling its archives with rubbish.

So--bet or no bet?

 

How can it be a get rich quick if im wrong --are you saying it wont melt.

You don't even know what your saying -- are you agreeing with me now.


Par --slow down and seriously think about what you are saying just for a change.

Think again .