2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

atf alternative?

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Old Mar 10, 2003 | 09:19 PM
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atf alternative?

Atf is supposed to break down carbon in your engine and help improve compression, but a lot of people think its bad for your engine because it's corrosive. If you sprayed water into your intake while running, wouldn't that have the same effect? I hear that cars running water injection always have really clean engines. Plus, water offers no theat to the engine, the worst you could do is stall it if you put too much in.
If that does work, is it allright to spray it right into the afm? It's not like you can pull off the intake hose and spray into the TB.
Let me know what you guys think. Seems to me that if it does work, it's a safer, and less polluting way of doing it.
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Old Mar 10, 2003 | 09:22 PM
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pei > caek
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Spraying water into the engine while its running causes it to turn into steam, pretty much steam cleaning the internals.

How I would do it, start the car let it warm up. Get to full op. temp. Pull off the boost sensor vac line, stick that in a jug of water (a gallon). Hold revs at about 3 or 4k until the water is all sucked up. Reconnect vac line and go drive
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Old Mar 10, 2003 | 09:24 PM
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MMO is good too.

Jarrett
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Old Mar 10, 2003 | 09:25 PM
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I second drox's suggestion...works great.
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Old Mar 10, 2003 | 09:26 PM
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I've used atf about 3 times...MMO has sat in my engine anytime its been down for more than a couple days being worked on. They all work...
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Old Mar 10, 2003 | 10:32 PM
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I MMO'ed my engine a while ago.
After pulling apart my friend's 13b, I saw all the carbon all over the rotor faces, and I'd love to get that out of my engine. I've seen what a blown head gasket does for cleaning a piston, makes it look like it just came off the assembly line.
Plus, if you pour water into the intake, you just get a bunch of steam, not a giant oil cloud that gets the fire dept called.
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Old Mar 10, 2003 | 10:53 PM
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From: Kitchener, Ontario (Hamilton's armpit)
Check this out. ATF becomes corrosive when it is exposed to heat. I take this to mean that when you just use it for the ATF trick in a cold engine you do not need to worry about it eating your seals...

Petroleum ATF is dramatically affected by heat, which can ultimately cripple a transmission. Heat makes petroleum lubes oxidize, leading to a buildup of corrosive acids that eat away at transmission surfaces. Heat also reduces the lubricating abilities of petroleum ATF, causing increased wear. Petroleum ATF thickens at high temperatures, making shifting more difficult (especially when this thick ATF is subjected to cold temperatures). Heat also depletes the addititive packages of petroleum ATF. When this happens, the additives are no longer there to combat the effects that oxidation by-products have on the transmission and ATF performance.
http://www.the-oilman.com/products/a...r-Solvin-45016
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Old Mar 11, 2003 | 04:47 PM
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drOx--

so you have done this safely? I was gonna try the ATF trick until I read this....I don't think I could pull off all that smoke without trouble from the neighbors!!

thanks!!
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Old Mar 11, 2003 | 07:18 PM
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oh, and dr0x, where should I put that water if I don't have a boost sensor (it's an N/A)?
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Old Mar 11, 2003 | 08:50 PM
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NA's have a boost sensor too. It's onh the passenger friont strut tower. The rectangular box thingy.
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Old Mar 11, 2003 | 09:26 PM
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The one in the turbo cars isnt even called a boost sensor, its called an Atmospheric Pressure sensor.

Jarrett
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Old Mar 11, 2003 | 09:44 PM
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pei > caek
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From: Mars
J-Rat if you want to get technical about it

And yes steaming the engine works fine. Just dont let the car die.
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Old Mar 11, 2003 | 10:30 PM
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could this possibly help compression to steam it?
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Old Mar 11, 2003 | 11:10 PM
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From: Mars
Perhaps. You are cleaning a lot of **** out of the motor and some carbon might be making a seal stick slightly. You never know until you try it
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