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

Compression On Rebuilt Apex Seal

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Old Nov 8, 2005 | 11:30 AM
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Compression On Rebuilt Apex Seal

Does It Take Awhile For A Rebuild To Build Up Compression On New Apex Seal. 1, What Im Asking Do The New Seals Start Off With Low Compression , And As The Engine Gets Running More Compression Builds As It Seds
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Old Nov 8, 2005 | 11:32 AM
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Usually this is the case with used rotor housings againsit new apex seals, but it depends on a lot of things, how low are they starting at? Most builds I've done haven't been under 95 to start off, and usually are over 100 after the first 100 miles.
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Old Nov 8, 2005 | 01:09 PM
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Well Talk To The Mechanic, Rotor1 Has 85lbs All Around, Munber2 Has 85 On One Side And 57 On The Other Two Sides, Now Mind Ya The Engine Doesnt Have But 2 Miles On It And There Thinking Thats Why Its Not Holding Idle, Im Thinking The Car Needs To Be Driven For A Bit. What Do U Think.thanks
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Old Nov 8, 2005 | 01:17 PM
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57 is pretty terrible, that would scream some kind of mistake in the build to me.
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Old Nov 8, 2005 | 02:00 PM
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Crap I Was Hoping U Wouldnt Have Said That, Oh Well!!we Shall See
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Old Nov 8, 2005 | 02:21 PM
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You seem to have to have the abosolutely worst luck. I do hope it finally works out.
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Old Nov 8, 2005 | 05:03 PM
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Me To
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Old Nov 8, 2005 | 07:41 PM
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With only two miles on the motor it really could be anything. That car NEEDS miles on it before you consider the rebuild a failure.

Turn up the idle to 1500 so it doesn't die on you.

Park on hills so you can compression start the car (or install a fuel cut-off switch to make un-flooding easier)

And most importantly, do another compression test after 200 miles or so. If you've still got the one 'low' number, chances are there's something seriously wrong.
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Old Nov 10, 2005 | 07:36 AM
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ya i here ya , there doing some final stuff on it to make sure the electrical is ok, then im pulling the dam thing so i can get some miles on it. thanks for the info
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Old Nov 10, 2005 | 08:24 AM
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who did the rebuild?....name of the shop?

Last edited by torean; Nov 10, 2005 at 08:32 AM.
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Old Nov 10, 2005 | 09:10 AM
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it was a friend of mine, very mild port, had to put it all back to stock, i hated that part. but being in california. they love there smog here , lol. but i took it to the dealership here where i live, theres no one here that knows rotorys, so basicly im fucked. if they cant figure the car out by tomorrow im pulling the dam thing. then ill just wait tell after the first of the year and have it towed somewhere down south to the la area . theres some good shops down there
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