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

How much ATF fluid to i put in my 13b 89 NA??

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Old Feb 17, 2002 | 01:16 PM
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From: maimi
How much ATF fluid to i put in my 13b 89 NA??

I need to build up compresion because my Rx7 is hard to start. How much ATF fluid to i put in my 13b 89 NA and should i let ATF sit in my engine over night befare i start it? thanx Rx7Dragracer
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Old Feb 17, 2002 | 02:16 PM
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From: florida
I was told to do the same thing to my 88 gtu dont do it.After i did it my car smoke ever morning untill its warmed up.And my car never smoked befor.The atf killed my oil seals
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Old Feb 17, 2002 | 02:17 PM
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I have a injector needle type thing and just squit in atf till it comes out the plug hole Just get as much as you can in there. and bump the ignition a few times and go at it again, then let it sit for 24 hours. you cant hurt it by putting too much in.

Daryl
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Old Feb 18, 2002 | 10:33 AM
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From: Puerto Rico Land Of The Fastest Rotaries
Look guys you do not need to build compression, you need to stop being cheap and get new apex seals and springs... Do you wanna mess up your housings? Don't do this sloppy ATF **** to your engine.
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Old Feb 18, 2002 | 12:35 PM
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The ATF trick works. My GXL is proof of it.
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Old Feb 18, 2002 | 01:13 PM
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ATF worked for me too...I used about 1/3 cup.
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Old Feb 18, 2002 | 01:28 PM
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ATF got my $150 86 RX7 running in pretty good condition. The previous owner thought the motor was getting too tired to drive. It ONLY has 158K on it, plenty of life left
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Old Feb 18, 2002 | 03:55 PM
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From: Puerto Rico Land Of The Fastest Rotaries
I know that the trick works BUT...You do not get it... The ATF does not mess the Apex seals at all and that is fine BUT>>> When your car is in the need for ATF to start it means that it is time for new seals and springs before they break and **** up your housings. All the ATF does is compensate for the loss of contact on to the housing due to Seal and spring wear. A set of seals is cheaper than a set of housings... That is all that I am trying to point out...I know the trick works BUT I also know what happens on the long run (How long?) up to engine usage...Be carefull with your wankel or it might break...
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Old Feb 18, 2002 | 04:03 PM
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angelguard the atf does not compensate for weak springs and seals, the atf gets rid of the carbon crap that has been there so long your seals dont even make contact anymore due to carbon buildup in the way. once that carbon is gone your seals make contact again. in rare instances where some person has left carbon buildup in there for soooooooo long, the seals are just stuck/weak and they dont contact the edge anymore. its the carbon that kills, not the atf.

people lose compression sometimes after aft treatment because that carbon buildup was the only thing keeping compression against the apex seals. without the carbon you get all kinda of symptoms associated with bad seals/low compression/ ect....
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Old Feb 18, 2002 | 04:07 PM
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From: BC, Canada
Originally posted by Angel Guard Racing Team
When your car is in the need for ATF to start it means that it is time for new seals and springs before they break and **** up your housings. All the ATF does is compensate for the loss of contact on to the housing due to Seal and spring wear.
Bzzzzz! Incorrect.
ATF doesn't compensate for anything. It breaks down the carbon in the engine that prevents perfect sealing. If your drive a RX7 very weakly, with no high revs, it'll build up carbon. The apex seals will stick into the housing, and not come down. Its really common in the automatics. Add some ATF, the carbon is dissolved, and wammo, the seals are again in perfect contact with the housing.
Adding ATF will NOT weaken the apex seals, or make them any more likely to break. Breaking is caused by detonation, and none of the cars on this page are turbocharged. If the springs break, your car will not start, but it will not **** up your housings.
Sean Cathcart
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