Dubsquad.org
Welcome, Guest. Please login or register.
November 23, 2008, 03:22:46 AM

Login with username, password and session length
News
DCI gets no respect from me. Always drive by there when at h2o more or less have to. Everytime no matter I be in my mk2 or mk3 they yell an curse their mouths off at me. -ktm8806 on vortex
Stats
75684 Posts in 5875 Topics by 256 Members
Latest Member: DFscalseclink
Search:     Advanced search
* Home Help Search Calendar Login Register
+  Dubsquad.org
|-+  Car & Tech Talk
| |-+  Volkswagens
| | |-+  A4 Golf/Jetta
| | | |-+  CAI+Puddle= :-(
« previous next »
Pages: [1] 2 Print
Author Topic: CAI+Puddle= :-(  (Read 1735 times)
leakypipe
Demonic Horde
Applebag
******
Posts: 724


View Profile
CAI+Puddle= :-(
« on: November 05, 2006, 07:17:42 PM »

I had to go through a pretty deep puddle last night, and after getting through it my car died.  Since I have only had the car about a month, I didn't even think about the cold air intake being so low down in the bumper.  I kept cycling her over and she finally fired, blowing out large clouds of steam.  Babied her to a safe place to pull over, and let the water cycle itself out of the system.  Went to dinner, drove all the way home without any problems.  I go to change the oil in it tonight and it will barely runj and then die.  I pulled the MAF out and there was some moisture, so I hit it lightly with the heat gun and got the water out.  THere is still some watero n the filter, so I am going to wait to test everything until the filter dries.  What are the odds my MAF is toast?

I posted this on Vortex too, but thought you guys might be more help.
Logged

el sea
Demonic Horde
Applebag
******
Posts: 461


View Profile Email
Re: CAI+Puddle= :-(
« Reply #1 on: November 05, 2006, 07:28:23 PM »

everything should be ok once it dries out. .. .
Logged
leakypipe
Demonic Horde
Applebag
******
Posts: 724


View Profile
Re: CAI+Puddle= :-(
« Reply #2 on: November 05, 2006, 07:37:27 PM »

One guy on Vortex has said "hope you didn't bend your rods".  How the fuck would that happen?
Logged

MrJoshua
Demonic Horde
Shriveled Applebag
******
Posts: 1330


Limey Squad

mrjoshua@hotmail.co.uk
View Profile WWW
Re: CAI+Puddle= :-(
« Reply #3 on: November 05, 2006, 10:06:00 PM »

One guy on Vortex has said "hope you didn't bend your rods".  How the fuck would that happen?

If the CAI actually sucked enough water into your engine (not just moisture, actual water) then you can get something called Hydrolock, where water goes into the cylinder and the piston tries to compress the water like it was air/fuel...  This can bend/snap rods and seriously fuck up your day.

Let's hope it all dries out and you're cool.

You might want to get some isopropyl alcohol to wash the MAF sensor...  Just a thought.
Logged

Cheers

Josh

Putting the I into DCI
carsluTT
Guest
Re: CAI+Puddle= :-(
« Reply #4 on: November 05, 2006, 10:11:03 PM »

yeah, i have to be ready to deal w/ this soon on my golf w/ the locaton of the new filter set up and all.........
Logged
leakypipe
Demonic Horde
Applebag
******
Posts: 724


View Profile
Re: CAI+Puddle= :-(
« Reply #5 on: November 05, 2006, 10:13:21 PM »

If the CAI actually sucked enough water into your engine (not just moisture, actual water) then you can get something called Hydrolock, where water goes into the cylinder and the piston tries to compress the water like it was air/fuel...  This can bend/snap rods and seriously fuck up your day.

Let's hope it all dries out and you're cool.

You might want to get some isopropyl alcohol to wash the MAF sensor...  Just a thought.

Ahh gotcha.  THe added water creates a higher compression ratio, correct?  THe weird part is it ran fine all the way home.  At Duff's suggestion I am going to take the tube out for the winter and run the filter straight off the MAF.
Logged

MrJoshua
Demonic Horde
Shriveled Applebag
******
Posts: 1330


Limey Squad

mrjoshua@hotmail.co.uk
View Profile WWW
Re: CAI+Puddle= :-(
« Reply #6 on: November 05, 2006, 10:44:19 PM »

Yeah, that would probably be a good idea over winter...

Not sure how much power you're running, but over here, there have been quite a few tests that show the OE Airbox (with a decent cold air feed going to it) will flow 400+ BHP with a cotton panel filter installed.  This setup is actually better in a lot of cases than having a cone filter attached to the MAF.
Logged

Cheers

Josh

Putting the I into DCI
leakypipe
Demonic Horde
Applebag
******
Posts: 724


View Profile
Re: CAI+Puddle= :-(
« Reply #7 on: November 06, 2006, 12:06:12 PM »

I would guess around 200 hp.  I am not going to do anything extravagent to this car, as I need it to be mt reliable daily. 

You would think the head gasket wouldblow before rods bent. 
Logged

MrJoshua
Demonic Horde
Shriveled Applebag
******
Posts: 1330


Limey Squad

mrjoshua@hotmail.co.uk
View Profile WWW
Re: CAI+Puddle= :-(
« Reply #8 on: November 06, 2006, 02:15:00 PM »

I think you need to suck in a fair bit of water for it to snap your rods, but if you think about it, the pressure would be pretty hardcore with a cylinder full of water, and with nowhere to go, I'm sure the rod would say "fuck it".
Logged

Cheers

Josh

Putting the I into DCI
Duffman
Demonic Horde
Shriveled Applebag
******
Posts: 1402



View Profile
Re: CAI+Puddle= :-(
« Reply #9 on: November 07, 2006, 12:52:38 AM »

it's really not something called hydrolock....it is hydrolock.

you can't compress water. if you fill up the cylinders, it wont compress, being as though the engine is turning, even 900 rpms (or whatever idle is), it's still fast enough IF the cylinder is full, you'll bend a rod.

here's the thing though...chances of you filling it at idle are slim.

1) the throttle plate is closed. think of how small that opening is when it's shut, you can barely see light through it.

2) by the time ANY water hits the cylinder, it's going to pretty much put out the spark...might take a revolution or two before it does, but it will. doesn't take much, then the engine shuts off, preventing any more vacuum from pulling in water.

when i worked at VW (back in 2000), there was a MK3 VR that came in. RO stated "customer ran through puddle at 34mph, then car died."....that was it. the tech pulled the intake manifold off and it was full...pulled the head off, all the cylinders full....so think about that. 35mph, we'll say 3rd gear (woman driver, she was probably in fucking second, ahhaha...jokes people)...that's what, 3000rpm....ish. ? that's pretty much what it would take to fill it.

the advantage you have is you have turbo piping to go through...idle speeds, all that piping...it's gonna find it's low spot (the intercooler) and want to stay there, until it fills up...giving you the advantage over an NA car that you'll come out just fine from it, at low RPMs.

apparently AEM sells some CAI peice that actually prevents hydrolock and any water getting sucked into the intake...how it works, i have no clue. from what i've heard, it's a foam connector that goes in mid intake pipe, it either lets water fall out of the intake when it gets sucked up, or provides an alternative air intake when water hits the filter (which would require more vacuum to actually suck it up, since it's kinda heavy)

i've typed enough...my back hurts. camping chairs make horrible computer chairs....
Logged
leakypipe
Demonic Horde
Applebag
******
Posts: 724


View Profile
Re: CAI+Puddle= :-(
« Reply #10 on: November 07, 2006, 08:42:01 AM »

Some people have had a problem with the foam diaphragm on that AEM unit disintegrating over time and the chunks of foam getting sucked into the engine. 

We dismantled the CAI last night, and used the pieces to mount the filter straight to the MAF housing.  There is no noticeable power loss, but the loud pssssssh sound I had went away.  The carbon intake acts like a megaphone for that sound, and with the tube out of the picture now, no cool noise. 

The cold idle problem I was having has seemed to gone away as well, which could be an effect of the MAF getting washed and dried, as well as the filter cleaned and re-oiled.  I will take some pics tonight of the setup for future reference. 
Logged

jewish
Demonic Horde
Applebag
******
Posts: 800


pvyt40
View Profile Email
Re: CAI+Puddle= :-(
« Reply #11 on: November 07, 2006, 11:14:17 AM »

noises are nice but running is better
Logged
carsluTT
Guest
Re: CAI+Puddle= :-(
« Reply #12 on: November 07, 2006, 12:49:06 PM »

lots of water in any mtoor isnt useuly good. in TX i had a few custamers sink jeeps tyring to be retards. boy one guy was pissed to find out he bent 2 rods and had to get his motor repaid/built........... aww...... joy
Logged
carsluTT
Guest
Re: CAI+Puddle= :-(
« Reply #13 on: November 07, 2006, 01:13:51 PM »

DID U change your oil? just wodierng if u got enough water in the mtoro to end up w/ some in the oil. thats never good.
Logged
leakypipe
Demonic Horde
Applebag
******
Posts: 724


View Profile
Re: CAI+Puddle= :-(
« Reply #14 on: November 07, 2006, 02:26:23 PM »

Changed the oil last night as well, and about 1/8 of a teaspoon came out. 
Logged

Pages: [1] 2 Print 
« previous next »
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.7 | SMF © 2006-2008, Simple Machines LLC
Mercury design by Bloc
Valid XHTML 1.0! Valid CSS!