ron's rx-7

ok, i have read all the post and looked at the instructions. i have heard everything from 1 oz to 4 oz. is that right? that seems like alot of oil to put in the chambers. i got one of those oil injectors and 1 oz is like half of it. and i also saw that u should let it sit overnight, that tru or what?

TristanTII

I try to run atf a couple times a year.

I put wayyyyyy more then 4oz in, wayyy more, like 1/2 quart, maybe 3/4 of a quart. And let it sit for at least 24 hours, if not more, bumping the starter every 4 or 8 hours.

before I start her back up I pull the plugs, stuff a whole bunch of paper towels down there, and bump the starter for a few seconds. Check to see how much ATF came out, and do it again, this usually blows out most of what I put in (and it's filthy when it comes out) Still smokes like a bastard though.

ron's rx-7

ok, a couple more questions. this helps clean the chambers, as well as lubricate when flooded? will it hurt the engine if i leave it in there for more then 24 hours? and last one, to get it out i just crank the engine and it will come out on its own? thanks

Turbonut

iTrader: (1)

To answer your question, yes it will come out when cranking engine with plugs out. Rather then compressing air/fuel mixture, it "blows" it out of the plug holes. It will also "blow" it into the exhaust...hence the heavy smoke. It will help build compression after engine flooded, or after sitting for extended periods. I've never used it to "clean" the engine, but a lot of people do, and let it sit in the engine for some time. Some mix it with kerosene also.

Amur_

Some people *insist* that it will eat the oils seals. Good for them.

According to the manufacturers' own information, ATF won't turn corrosive unless it is heated above a certain temperature. What I haven't found yet is what that temp is or how long the ATF has to be above it before it becomes corrosive. I also haven't found anything stating exactly what the ATF becomes corrosive to. What I have found is this:

Regardless, ATF is not corrosive right out of the bottle. And when you put it in your motor, the motor is cold, isn't it? And when the ATF sits in your motor, the motor is cold, isn't it? And when you go to cycle the motor the motor is cold, isn't it? The point being that the ATF doesn't get a chance to become corrosive. The conditions for it aren't there.

If you want to pour ATF into a hot motor, well, that may be another matter. So pour it into a cold motor and go watch Looney Toons while it does its thing.

ron's rx-7

looney tunes are the ****, and thanks guys

jeremy

iTrader: (1)

there are other products that are made to do this without using atf and coating your exhaust/sending up a mt helens cloud. can't remember off hand. mmo is supposed to do this too. soaks in then loosens it up when burned in the combustion. also water injection into the motor running.

Amur_

The smoke is half the fun!

Aaron Cake

iTrader: (1)

I'm curious to find out if ATF has specifically been tested against the rubber used:

-in the oil O rings
-in the coolant O rings
-in the corner seal plugs

I am thinking that the manufacturers ratings on ATF are for use in an AUTOMATIC TRANSMISSION, not a Mazda rotary engine.

I do not recommend putting ATF into a perfectly good rotary engine. Take a look at http://www.aaroncake.net/rx-7/atftrick.htm for some more info.

But it's your engine...while you're dumping **** in there, might as well add a little vinegar....it's a cleaner, right? And some Windex to make thouse housings shine...Oh yeah, and diswasher powder is a great cleanser as well....

Three things go in an engine: fuel, coolant, oil.

ron's rx-7

well its already been in and pumped back out, so its to late.

aaron, where have u gotten ur info on all of this? have u pulled an engine apart and observed it first hand? i have done a bit of reading on it and people's experience with it. i have only heard of one person who's engine have deteriorated after this procedure. so im not to worried about it.

Aaron Cake

iTrader: (1)

I have heard several stories about engine damage, though have not experienced it first hand (I don't dump random **** into my engine).

Like a lot of things, the "ATF trick" is overused and constantly presented as a cure all...It is not, and aside from internal engine damage, it kills your spark plugs, requires you to then change your oil, and has a real chance of clogging the catalytic converters.

Amur_

Don't forget to change the oil.

Amur_

I haven't seen any posts alleging damage from ATF.

Quote:

Like a lot of things, the "ATF trick" is overused and constantly presented as a cure all...It is not, and aside from internal engine damage, it kills your spark plugs, requires you to then change your oil, and has a real chance of clogging the catalytic converters.

Alleged engine damage.

It doesn't kill plugs, it just covers them in crap. Use carb cleaner to clean up the plugs.

So change the oil. Big deal. Hardly the end of the world.

I soaked my current motor in a LOT of ATF for months, started it with the stock cat on and later passed emissions with that same cat (and same plugs.) I'd say you're a little quick to decry a procedure that you've already acknowledged that you haven't done yourself (ie have no experience with.)

White_FC

I agree with Amur,
as i've said in other threads I don't belive this crap about ATF eating the seals in the engine..
My engine sat for at lest 2months with ATF being poored in intermitedly over that time.. Now the engine is running better than it ever was, and any of the seals DEFINATLY arn't bad.

I will be stripping an engine soon thats had atf in it for nearly 3months now, I will let you all know when I find out it hasn't done bugger all to the seals in it.

Amur_

Do post after the teardown. Take pics if possible. I'll host them (or find someone who will.) Arguing over conjecture gets boring pretty fast. Here's a chance to gather some evidence and share it.

Please keep us posted.

kllntyme

I have used the ATF trick. At the time I couldn't get my car to do anything but rotate and flood... even after several days of sitting to "air out". I tried removing the fuse for the pump, rotating without plugs, etc. to no avail. The way I saw it, I could try the ATF trick or start working on the engine. If the ATF did any damage... that's right... start working on the engine. I had nothing to lose and gained lots. It felt like I had more power, my 3800 rpm hesitation almost disappeared, and the poor thing doesn't try to flood every time the temperature changes a few degrees. (I live in Ohio. The temp changes 30 degrees every damn day!!!)

I now love ATF. After seeing the wonderfull effect it had on my beloved rex, I may start drinking the stuff with breakfast.

Rx-7Blazin

so what exacly is the atf treatment supposed to treat. when i had my car fixed they sayd it had kinda low compression but not bad (they sayd as my miles go up it should get better because it ad been sitting for a while) soo would atf help with bad compression

kllntyme

It should harden the apex seals and, yes, increase compression. It doesn't work miracles, but it works.

White_FC

Umm ATF wont do anything to your apex seals..
but it is very good at 'disolving' carbon, by that I mean it turns it into a black thick sludge.
Which can inturn increase compression if one of your apex seals was stuck due to carbon which is fairly common.

jstyle

why dont u guys just fix it so it doesnt flood nemore? :| .. about how much would that cost?

White_FC

We're not talking about its use for when an engine floods, Jstyle.
We're talking about using it to clean the inside of your engine.