The best way to destroy a good airboat motor!

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Waterthunder
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The best way to destroy a good airboat motor!

Post by Waterthunder »

Hydraulics 101, I have seen this so many times on both A/C and car motors. Someone has an air cleaner that allows water to get into their motor. Remember when your Jr High school physics teacher told you that you can not compress a liquid well he was right! Most of the time the motor doesn’t start up and just dead heads but if your unfortunate enough that it starts something in your motor will compress leaving you with a bent, or broken rod and maybe even a bent or broken crank shaft!
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Re: The best way to destroy a good airboat motor!

Post by Waterthunder »

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THE PROOF IS IN THE PROP!

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Re: The best way to destroy a good airboat motor!

Post by MadSid »

Did the same thing with a outboard at 6 grand ,it compressed allright but moved a lot of metal

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Re: The best way to destroy a good airboat motor!

Post by yobee »

NICE!
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Re: The best way to destroy a good airboat motor!

Post by cowtown »

how far is the crank out of square now?
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Re: The best way to destroy a good airboat motor!

Post by Joe »

And they probably want it fixed under waranty to :?
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Re: The best way to destroy a good airboat motor!

Post by bondsman »

com'on dave tell them the truth that is the new top secret offset performance rod from oliver. :twisted:
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Re: The best way to destroy a good airboat motor!

Post by Waterthunder »

I must admit the customer is a great stand up person and has become a friend of mine! Right from the start he stated the truth and told me what he did. When customers are honest and considerate I do all I can to help them! I will have him a new shortblock done in time for the weekend! He beats the hell out of this motor many people tell me how he run’s it hard. So it was nice to tear it down after he has ran it for a while to see how she looked! The motor was jam up and the bearings were like new accept fro the bent crank and rods!
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Re: The best way to destroy a good airboat motor!

Post by plumcrazy »

the standard crate moter will break rods and cranks under the same circumstances just ask my bro one little rain storm with a crappy breather hit the key and it grenaded :| damndest thing ive seen most moters will hydrolock but if they fire your done hoss :blackeye:

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Re: The best way to destroy a good airboat motor!

Post by gruprgetr »

looks kinda like some o that new york new wave art stuff :blackeye: :bounce:
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Re: The best way to destroy a good airboat motor!

Post by Olf Art »

When in doubt, pull the plugs and crank it through for a couple seconds before you try to start it. It can save a lot of heartache.
Back in the day on the RR if I went out to crank up a locomotive that had been sitting for a couple of days, the instructions were to open a bleeder cock on the side of every cylinder and crank it through on the starter with the fuel pump off. Then close 'em and start it.
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Re: The best way to destroy a good airboat motor!

Post by Bob in Canada »

Thunder;
This might sound like stupid question 101 but ... when you say " an aircleaner that allows water into the engine " , which way do you mean ? what type of air cleaner is good and not so good?
Mine came with the marine type flame arrest screen and that was it , got rid of that P.O.S.(it would only stop birds) and went to a Morosso .
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Re: The best way to destroy a good airboat motor!

Post by rost495 »

Yep for newbies like me.... more data on what should be used is always nice.

The upside down oil drain pan over the top of my carb should help though.

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Re: The best way to destroy a good airboat motor!

Post by JOLLY ROGER »

Being a farmer I check the oil in every engine before I start it. Last year after being on the the road for 5 weeks , couldn't wait to ride my boat, but out of habit I checked the oil only to find it over full ! Removing the drain plug in a bucket pure drinking water came out ! Stopped right there, pulled the plugs,and kill switch and cranked her over. Changed oil and filter, no blood ,no Foul. She lived to hunt again! I installed one of GTO'S all weather breather kits. No problems since.
Now to show you how smart I really am, This weekend had boat loaded heavy as usual, [4 people.2 cases of beer,and cooler full of snacks, and 15 gallons extra gas] ran about 5 miles up the river, stopped and grilled some shrimp. After about an hour or so headed up stream about a mile or so and all hell broke loose ! Radiator cap started to blow steam like crazy! Stopped ,let it cool down. Could not find leak.Figured it was a head gasket, so filled her up with river water and tried to idle back in. Made it 7 miles back to ramp. When we tore it down yesterday, had cracked head, and scoured cylinder wall on same cylinder {#4} so by making it back I cost myself a block ,instead of just a head.
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Re: The best way to destroy a good airboat motor!

Post by Waterthunder »

An open airfilter that when it rains water can get into your motor! On a carb motor I just have a rain cover. Something else that works great and looks good is to buy a stainless dog bowl. Drill a hole in the middle for the stud to run thru and remove the top of the air filter and replace it with the bowl. I get them at Tractor supply turn them upside down and place them over the air filter and it's base. There are dozens of way's to keep water out but a rain cover or a stainless bowl work great and cost around $15
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Re: The best way to destroy a good airboat motor!

Post by Hogheaven »

The wife's stainless steal mixin bowl from the kitchen works well too.
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Re: The best way to destroy a good airboat motor!

Post by Olf Art »

Hog, I found a 3-bowl set of stainless bowls over at Dollar General one time for $10.00.
I used the one that fit for a carb 'rain hat', and the other two are handy in the shop.
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Re: The best way to destroy a good airboat motor!

Post by Ted »

Pie pan aluminum cook wear usually under 10 dollars. Add hole to fit over breather, air filter. Use a little silicone and two wasters at top so no rain leeks into carb while sitting. A 10 inch cake pan is what I used.

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Re: The best way to destroy a good airboat motor!

Post by Canes350 »

Question Are these ideas you leave on the carb full time or just when the boat sits. I mean can you leave the dog bowl on the carb while running down the river?
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Re: The best way to destroy a good airboat motor!

Post by Olf Art »

Sure. It becomes your air filter top. Then if it starts to rain while you're out .... no problem. Just get one that's large enough so that it will allow enough airflow.
Last edited by Olf Art on Wed Oct 29, 2008 6:57 pm, edited 1 time in total.
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Re: The best way to destroy a good airboat motor!

Post by JAMES »

i no a motor needs air to breath what sz air filter do u all recommend on automotive engines
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Re: The best way to destroy a good airboat motor!

Post by Jimmy Rickards »

I use one of them plastic pans that you drain oil into fits over the air cleaner perfect. Never had any problems.
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Re: The best way to destroy a good airboat motor!

Post by T-REX »

one example of how this website can save your azzz! i got my boat all loaded up this mornen-coolors-tools -spares-etc.....just before i left the house .....said to myself......self lets start this sucker just to make sure everything is cool. well it turned over twice then went 'clunk'......i said self, that didnt sound good. turned key off. went around and checked prop- nothing there- so i hand turned the prop and sure enough, something wasnt right. got some tools out and started pulling plugs- well i found a wet one, but kept checking- the rest were dry. with that plug out i turned the engine over and it fired right up-shooting water out of that cylinder.

long story still long but if i hadnt just read about this- maybe i would have tried to keep starting my engine..........thanks again everybody that makes this site happen!! maybe saved my engine. :)

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Re: The best way to destroy a good airboat motor!

Post by Olf Art »

I may be gettin too old and cautious but I never leave the driveway with my boat until I've wiggled and poked at most everything on it. That includes checking the fluid levels, the lights, and starting it. Then I check out the trailer too.

It's a whole lot easier to fix something sittin there near your tools than it is at a ramp or on river bank miles from home. Make yourself a good checklist .... everything from transom plugs to tire pressure on the trailer ... and keep it over the visor in your truck. Last thing you do before you drop it into Drive is go over that list. It's helped me a hundred times.
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Re: The best way to destroy a good airboat motor!

Post by Bob in Canada »

On the same line that OlfArt was talking about checking things...
Friday morning , 6:45 AM , backing out of the driveway with my old Suburban , turn the wheels to make the 90 to the street and the right lower ball joint snaps in two . The truck dropped so hard and fast to the road the girlfriend hear it from inside the house .
That was the truck I was going to use today to tow my boat to the bush . Wouldn't I have been bummed out if that happened on the road with the boat hooked on . Who's fault? My fault .
Too lazy or cheap to check or have the front end checked on my truck . Well it was a small blessing that the wheel flopped off at 3 MPH, 25 feet from the house .
Should have check all my gear , That would have been a stupid way to wreck a boat . :shock:
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