Baseline Compression Check

Sep 30, 2011 | 03:36 PM

russ

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From: St Pete FL

Baseline Compression Check

I was wondering if a baseline compression check for a new RX8 is worthwhile. I'm not a hypochondriac, but I did get a baseline ECG a few years ago for myself

.

TIA, russ

Sep 30, 2011 | 06:33 PM

ASH8

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From: Australia

Acceptable Levels..

830kPa/ 8.5kgf/cm2/ 120.PSI- Standard Level
680kPa/ 6.9kgf/cm2/ 98.6PSI- Minimum
150kPa/ 1.5kgf/cm2/ 21.8PSI- Difference Between Chambers
100kPa/ 1kgf/cm2/ .. 14.5PSI -Difference Between Rotors

Factory Settings @250 RPM

Sep 30, 2011 | 07:27 PM

russ

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From: St Pete FL

I have a feeling there is no real reason to have this done, it was probably done right after assembly anyway as QC. If they did, I wish they would have put it in the docs.

Apr 14, 2016 | 07:58 PM

jamesfickackerly

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True !

Apr 14, 2016 | 08:05 PM

Williard

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From: PA, corn fields. Ho-bud

Compression tests can't be completed just after building a fresh motor... Well i guess you CAN but it's pointless really.

You have to give time for everything to break into each other..

Travis

Apr 15, 2016 | 07:16 AM

NotAPreppie

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From: 2017 Miata RF Launch Edition

Quote:

Originally Posted by Williard

Compression tests can't be completed just after building a fresh motor... Well i guess you CAN but it's pointless really.

You have to give time for everything to break into each other..

Travis

How long would you say this period is?

I wish I'd bought a compression tester (or had my home-built one calibrated/validated) when I had my engine rebuilt so I could track its progress.