Mazda Rx8 Compression Test | EASY, FAST, CHEAP!

How to test Mazda Rx8 compression at home.
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**DOWNLOAD COMPRESSION CALCULATOR EXCEL**

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[Drivenbymadness]

If you want to check out the items mentioned in the video, they are linked below:
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🟠JACK & JACK STANDS= LOCAL HARDWARE STORE

🇬🇧 UK







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[eartouch]

Thanks a lot for the tutorial, i will do my own test this weekend. You already helped me a lot with my rx, it runs great now. I just wanted to give you some advice for slowing down the video in adobe premiere (thats something i can maybe help out a little bit). Try this different approach instead of right clicking on the clip in the timeline and changing the speed, because that acually doesnt make use of the 60 fps and just skips frames. Go in the media browser inside of your premiere project and right click the video file and select: modify -> interpret footage. Then in the next window you'll see the frame rate settings, select "Assume this frame rate:" and change it to whatever you want your final clip to be, for example 30 fps. Now your 60fps footage is "naturaly" slowed down to 30fps making it twice as long as the original clip - you will see a huge increase of quality and therefore readability in the pressure reading. Also helpful for making smooth carshots :D

[DCGULL]

Thank you for the increased detail, it helps! But, please 'reduce your intake' because even to this fast talking Yankee- you deserve a speeding ticket! Add in the required mental 'Slovenian English to 'Merican' translating software, and, you need to reduce speed an additional 20%, Krys! However, I really like this updated version, because, I know that you verified data with multiple folks, showed your work, helped with the video stream (I needed that!) and validated results- including altitude! Once again- U da Best, and, I know that tons of other people appreciate your videos as well. Thanks for the extra effort- it's a big cost savings over a rotary tester ($300.00 USD!), and, does come out pretty close. Note: Gotta find out what you are taking, I could do my whole job (9+ hours) in 45 minutes at your pace... Keep 'em coming, DBM!

[jairoumana]

Awesome video! I've been meaning to test my compression just to gauge where my engine is at and this video really helps a ton. Thank you for always putting out great content. Keep up the great work! My madness has been driven. lol

[wormsali]

Thanks buddy. Saving me hundreds of $'s

[thealgerianman]

not as easy as i thought
Great video by the way

[vimprajapati]

Hi there, I was wondering how would the results from a "home test" like this compare to the results conducted by a professional garage using a dedicated rotary compression tester? Thanks :)

[theshitlist]

Indeed, your diligence and stringent research of new, old, proven, and theorized mods, and their realistic changes and priority are a very welcome guidance and reassurance. Thank you for taming our anxiety, , self doubt.. By supplying all the factors, and options for a dependable plan of attack regarding any build style.a no b.s. multi build roadmap. " Driven By Madness " and " Slip Angle Media " are the . Greatest tools I use on my - 8- . Thank you so much.

[patrickzhang]

Hi, really enjoy all you rx8 videos and I just did the compression test today to my 2010 RX8 R3 as well. But just wondering why you add the difference between MAX PSI and Highest PSI to the PSI reading to get the REAL PSI? Have been doing research online but seems can’t find anything related to this. Thanks

[Kamal-sjit]

I was just going to ask you about the accuracy of the method you used in your other compression video. That's crazy

[marksmith]

Thanks for the info. Can you explain the maths behind why you add the difference between the max psi and best rotor psi value! With the gauge valve removed are you saying the pressure reading (90psi) is just inaccurate and is actually really the 110psi recorded when the valve is in the pressure gauge? Therefore, the key part of the vid is using the go pro and editing software to be able to see the difference between the 3 faces of the rotor.
Anyone done this and then compared to a trusted rotary testing service/device to see how close/accurate it is?

[thatshaggydude]

I dont have excel you should add that to your website.

[mustafaalazey]

If the car starts and when it’s warm up turn off what’s the problem?

[mokokawi]

Do you only check trailing plug??... I want to check all 4.... Can I take all 4 out, and test each one... Or do you have to leave plug in, on opposite "trailing or leading" to get correct readings

[hemp]

Have a question, do you always do these videos at a quarter tank or is that were you fill it lol

[SoldfMC]

Just did a test with the "Rotary compression tester" from Classified performance

Front - 6.08 - 5.66 - 5.46
Rear - 6.06 - 6.13 - 5.92

Would you say the front rotor has an "extreme" difference between rotor faces?

[davidgarrison]

So this is why they are called MAZDA TECHS??
I get it now. Kidding. Great video...albeit WAY over my head... But insight to what i need to learn and study. Thx.

[SirPsychonautic]

this is not how you do a rotary compression test. to get proper results, you need to remove the Schrader valve on the compression tester and watch the pulses as you are measuring 3 values from 1 spark plug hole. If you do this, you could potentially be masking the true problems with your engine. I was dumb and did this and had 120psi on my rx7 front and rear rotors, but when I used the proper method, it was about 70 psi per rotor face, which is about the same as what a Mazda compression tester would have given me (I have both methods).

[octapc]

I watched the part about removing the Leading spark plugs. Are you suppose to remove both at the same time and then test them or remove each spark plug one at a time?

[EXPLODETHELIGHTS]

ANyone know if the compression psi is supposed to be from 90 to 120 or way higher?? first time dealing with rotary engines, Sorry if I sound like a newbie( that's what I am)