Stupid question! - FMVperformance.com : The site for all your Ford Mazda and Volvo needs
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post #1 of 18 (permalink) Old 06-08-2008, 03:20 PM Thread Starter
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Stupid question!

What is hydrolock and how it is done?

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post #2 of 18 (permalink) Old 06-08-2008, 03:22 PM
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Re: Stupid question!

It's when you suck water up via your CAI. This happens when you drive into standing water or in a flash flood situation.

CAI is cold air intake.

There is lot's of info on this here or you can google it. Please take a moment to search next time.

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post #3 of 18 (permalink) Old 06-08-2008, 03:42 PM
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Re: Stupid question!

I need to point out that you can get it in other ways than with just a CAI...thats a huge misconception that people think they cant hydrolock if they dont have a CAI...but if your head gasket is compromised you can also very easily hydrolock your engine

basic definition is just if there is water in the combustion chamber during the intake stroke.


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post #4 of 18 (permalink) Old 06-08-2008, 05:39 PM
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Re: Stupid question!

I have a feeling the previous two posts might just be confusing.

In case you are unfamiliar with engine operation here are the first two strokes of a 4 stroke engine:

Intake: The intake valve opens as the piston goes down in the cylinder. The vacuum created as the piston goes down pulls an air/fuel mixture into the cylinder

Compression: The intake and exhaust valves are both closed. The cylinder moves up in the cylinder compressing the air/fuel mixture (which is gaseous) into a small space to make it more volatile.


In a hydrolock situation what happens is that somehow (either by a gasket leaking or by pulling water in through the intake -- see reply 1) water gets in the cylinder during the intake stroke. When the piston comes back up in the cylinder it is met with the problem that liquids do not compress. This causes the piston to stop dead in its tracks. Because of the momentum present in the engine this usually results in bent connecting rods and crankshafts resulting in expensive repairs.



Basically, water gets in the engine. The piston can't compress the water and stuff breaks.
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post #5 of 18 (permalink) Old 06-08-2008, 06:24 PM
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Re: Stupid question!

I really dont see how that is anymore simple than the previous responses at all...we each wrote 3 lines...you wrote 10

if the OP doesnt understand what an intake stroke is..how to you figure they understand what valves/momentum/volatile means?

Sorry if this is coming off as rude but I fail to see how your post is less confusing at all


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post #6 of 18 (permalink) Old 06-08-2008, 06:30 PM
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Re: Stupid question!

forgive me if this sounds like I am being a jerk...  but because you were both wrong.

The second poster wrote that it comes in the CAI which you pointed out as incorrect. 

Then you wrote [quote author=bpboiler3 link=topic=114158.msg2375315#msg2375315 date=1212954136]

basic definition is just if there is water in the combustion chamber during the intake stroke.
[/quote]

which is also not correct.  Neither of you posted that the actual lock of hydrolock and the damage thereby occurs during the compression stroke.  Neither of you also mentioned that the reason the piston locks is because the liquid can not be compressed.  At least to me those points of information are pretty important when defining hydrolock.
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post #7 of 18 (permalink) Old 06-08-2008, 06:35 PM
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Re: Stupid question!

water make engine go BOOM. wallet cries. and there was shaking of many fists


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post #8 of 18 (permalink) Old 06-08-2008, 06:44 PM
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Re: Stupid question!

Thanks for correcting me. So I was wrong, it's okay for water to go into your intake and it won't cause hydrolock. Cool, I'll go stick mine in a bucket of water now so I can wash out my dirty engine.

rslaback, how did we get this far without you!

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post #9 of 18 (permalink) Old 06-08-2008, 06:50 PM
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Re: Stupid question!

[quote author=Marne_Aeok link=topic=114158.msg2375532#msg2375532 date=1212964539]
water make engine go BOOM. wallet cries. and there was shaking of many fists
[/quote]

lmao!

thats all you need to know

[quote author=ito]
on those rims, they are ugly at any size. Bigger just makes them more ugly.
[/quote]


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post #10 of 18 (permalink) Old 06-08-2008, 06:58 PM
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Re: Stupid question!

[quote author=danielj link=topic=114158.msg2375539#msg2375539 date=1212965086]
Thanks for correcting me. So I was wrong, it's okay for water to go into your intake and it won't cause hydrolock. Cool, I'll go stick mine in a bucket of water now so I can wash out my dirty engine.

[/quote]

Go ahead. Just don't crank it over without the spark plug out.


I can see this is going to be a lovely place to stick around. I give a correct definition of something and I am the one who gets flamed.
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