Now my true noobness shows..
Ok So my Jspec s5 t2 motor is sitting on a pallet in my garage. Decided to check compression on it. Now I know I don't have the mazda tool but I have also read many of you don't use them anyway. I also know that to get a true reading the motor needs to be up to operation temps ect ect.. But I figured I could get an Idea of what I was looking at as far as if I needed to rebuild right away. So I hooked my battery up to the harness and turned the motor over And tested the rear rotor first and I did the surge test first and it was right at 85 psi everytime the needle surges then I let go of the button and within the first 3 or 4 surges it went straight to 110 psi Then I did the same thing on the leading plug same readings.
Then to front rotor, and nothing. Zero!!! Any Ideas? |
probably apex seals stuck from sitting. Mine were, shot some oil in there, turned it over till they freed up. good compression.
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Correction on the surge PSI it is 25 not 85...
thanks ABC I will try that.... Nice name btw, where all your normal ones taken? |
No, I hate registering for websites, so lame, so I had an fb at the time, hence ABCDE-fb! tada!
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Inspect the apex seals through the exhaust first. If they are intact and go ahead an spin the motor up. Drop some oil inside the chamber. check compression from the T plug holes. Cold you should see at least 75psi on all faces. It is not uncommon to find a 100psi on one rotor and 75 on another if this is the running case expect it to blow.
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Thanks guys, I'll let ya know I'll mess with it tonight.
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i know that with the "bounce" test, it should be in the 30-35 range, so i think your right in there.
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30 to 35 range thats one weak motor. It should be 80 to 120
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Ice we're talking cold, not even in the car. Still weak?
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Yes
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Umm... sad...
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^Yeah, just rebuild it and you'll be set :D:D
BTW, I've been to the 1/8mile track in Lakeland a few times. |
Shh.. dont say that, Our poor poor track...
Yeah I was thinking about rebuilding anyway. The guy I want to send it to is in TN, so I may just attempt it myself... |
Originally Posted by cpubugs
(Post 7255771)
Shh.. dont say that, Our poor poor track...
Yeah I was thinking about rebuilding anyway. The guy I want to send it to is in TN, so I may just attempt it myself... BC |
^Aye, otherwise known as "Rotary Resurrection".
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lake land huu used to go to church there
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Where at? I am a lakelander born and raised.
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that lakeland track is sad lol...my local 1/8 is about as sad here in the bay area lol
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Ahh, your in largo so your close enough to ft desoto to go to theirs I hear it is sweet.
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yeah, that one is a very nice track.
Originally Posted by cpubugs
(Post 7257316)
Ahh, your in largo so your close enough to ft desoto to go to theirs I hear it is sweet.
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