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

drive slow rx7 reacts slow???

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Old Jun 10, 2006 | 12:26 PM
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Ravingecu21's Avatar
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87 Mazda Rx-7 Mods**91 JDM
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drive slow rx7 reacts slow???

Ok my car overheated and i have been driving it slow while before the boost starts to kick in so my question is i pushed it a little bit cuz still afraid of overheating again and it felt slow could the overheat drain it's power or just driving it like a grandmom made it slow?????? any help please??
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Old Jun 10, 2006 | 02:46 PM
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Overheating will usually cause you to blow a water seal in the engine. Chaeck your coolant for oil or a gas smell. Also check your exhaust for a sweet smell, that would be coolant entering the combustion chamber and burning. If any of these are present, then it is time for a rebuild.
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Old Jun 10, 2006 | 03:52 PM
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you may have lost compression. check for compression.
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Old Jun 10, 2006 | 04:04 PM
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if i lost compression how do i gain it back???
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Old Jun 10, 2006 | 04:17 PM
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lol, rebuild, no one likes to hear it, but if you lost compression you need some new seals,and because you overheated it, i wouldnt be suprised if you warped one or both of the housings,

DONT EVER OVERHEAT A ROTARY

not trying to be a dick so dont think that, but now you know, as soon as that needle goes past halfway, pull the fu** over


but first, either do a compression test your self or have someone who knows what he/she is doing do it for you
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Old Jun 10, 2006 | 04:22 PM
  #6  
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87 Mazda Rx-7 Mods**91 JDM
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From: Orlando,Fl
damn!!what do u mean by warped the housing?? and i saw this kit to do a compression test at advance is it hard to do it how does it work??
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Old Jun 10, 2006 | 05:27 PM
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Originally Posted by Ravingecu21
if i lost compression how do i gain it back???
this is such a sad innocent question. I almost want to put it in my sig. I'm sorry my friend but I have low compression on my engine and I have to rebuild. One of your seals is torn/worn.
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Old Jun 10, 2006 | 05:36 PM
  #8  
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From: Orlando,Fl
yo I still refuse i need a rebuild until i see proof which i haven't yet! no white smoke or no coolant smell and i havent been lossing coolant latley
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Old Jun 10, 2006 | 05:51 PM
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just pull one of the plugs on the first rotor crank it over
listen for 3 loud PSH PSH PSH, then to the rear rotor,
they should be fairly loud,
if one rotor is more quite than the other,
then you have a bad seal.
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Old Jun 10, 2006 | 06:10 PM
  #10  
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From: Orlando,Fl
ok i'll try that another question is if the overheat was not that long and bad can it mess it up???
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Old Jun 10, 2006 | 06:17 PM
  #11  
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From: nebraska, lincoln
it all depends. on the shape your motor was in already.

I would check compres. if that turns out good then start at square 1
pull your thermostat.
flush your coolant ect. ect ect.
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Old Jun 10, 2006 | 09:19 PM
  #12  
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well i dunno if this is what you mean, but i have a t2, and its about as fast as a geo metro until i get it above 3000 rpm (this is how i avoid speeding tickets)

if your compression is gone. . . you need a rebuild
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Old Jun 10, 2006 | 09:29 PM
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Originally Posted by RE_GTUs
just pull one of the plugs on the first rotor crank it over
listen for 3 loud PSH PSH PSH, then to the rear rotor,
they should be fairly loud,
if one rotor is more quite than the other,
then you have a bad seal.
no, that's not how you tell if there is a bad apex seal!

you do not compare the rear rotor with the front. first you take out a plug from a rotor. if the 3 wooshes are not even, then an apex seal is broken or missing.

better yet, get a piston engine compression tester and use that. there is a writeup on rotaryresurrection.com on how to do this.

as far as seeing proof... unless your apex seal finds it's way past the cats you won't see any proof until you pull the engine apart. by now you should have figured out that a blown coolant seal isn't the only reason for a rebuild.

Last edited by alexdimen; Jun 10, 2006 at 09:33 PM.
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Old Jun 10, 2006 | 10:29 PM
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Originally Posted by Ravingecu21
yo I still refuse i need a rebuild until i see proof which i haven't yet! no white smoke or no coolant smell and i havent been lossing coolant latley
then it's MORE likely low compression.
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