Compression test
 

Does anyone know how to do the compression test on a rx8? I have the gauge and am fairly mec savey. Any advise would be great.

Compression can be checked two ways: manually with a compression gauge, or electronically with an engine analyzer that measures cranking compression. With electronic testing, a computer analyzer estimates compression in each of the engine's cylinders by measuring slight variations in engine cranking speed.

I never did it before in my life, i hope this helps a bit...

:uhh:Tell us more about the cylinders and the manual compression test.... :uhh:

There's no accurate way to measure the compression with a standard mechanical gauge.
Especially "static" compression is rpm related, that's why Mazda has a graph to correct for the right rpm range.
Without a chance to analyze the 3 different rotor faces all you're getting is a rough estimate of the rotor's average at an unknown speed.
That's not enough to get an accurate idea!

If you have a good tool however you can come to a little more accurate results by keeping the pressure relief valve open.Just look at the gauge's spikes in a determined time lapse.
Each 3 spikes = 1 revolution, right? count the spikes in 10secs, multiply by 6 and you have a rough cranking rpms estimate.
Still a very rough estimate though and not enough for a warranty claim, is that's what you're after.

It's kinda complicated at this moment. Never did it...sorry.

you can always buy the gauge yourself.

https://www.rx8club.com/showthread.p...ression+tester

...........or build it yourself.............

http://www.rx8forum.de/index.php?pag...threadID=26072

Oh gosh...
If you do something wrong with that tool you will probably end up in another dimension!

It is not a common Italian Espresso-machine.......LOL
The German guy needed it on a short term in the weekend........it worked for him and he did fix the job with it.......yeahhhhhhh......."Deutsche Wertarbeit" !!!

wow, are you serious?

that's some dedicated rotor head I gotta say !

Im a rotor head too but I rather just get the official tool ... and I already got it in fact. :) need to find a way to go get it tho cuz its not in NYC.

That's really nice, even if bulky!
I have access to Mazda's tester and own the "twistedrotor" one but this thing really looks massive.. and impressive!