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Title: Compression test result
Post by: J.j. on February 10, 2005, 11:10:19 PM

Hi,
Took the car to have a compression test today.
The result.

Front
7.0
7.0
7.0

Rear
6.7
6.9
6.7

@200 something rpm (Arent they usually tested at 3 or 400 something rpm?? , does that make any different??)
Anyway, was told the engine\'s quite health. They even suggest that these kind of figures are usually found on a car with 20 something k miles.

What do you guys think??

Cheers

Title: Compression test result
Post by: mattmaclennan on February 11, 2005, 01:44:37 AM

ooooohhhh spangally! What model/year is it.... it must be like when your kids get their GCSE results LOL

Title: Compression test result
Post by: J.j. on February 11, 2005, 11:12:43 AM

Quotespangally!

:confused: :confused: :confused:

Sorry, forgive my very limited English.

Yeah, you\'re right Matt. If only every parent\'s like me(not knowing what all those figures mean), no kids will ever be in trouble.
So, my kid doing ok? or do I need to give it a good kicking...
:rollin :rollin :rollin

Title: Compression test result
Post by: Spotlamp on February 11, 2005, 01:24:16 PM

They\'r pretty healthy to say the least, think they\'re pretty close to new engine compression results, looks good.

H

Title: Compression test result
Post by: Freddy on February 11, 2005, 02:55:59 PM

New engine compression results will show you much higher than that.

All 6 pots are even. With stage 1 modifications and PFC. You still have good life in that engine. What is the current mileage?

Title: Compression test result
Post by: Iwan on February 12, 2005, 08:30:22 AM

Compression is normaly tested at/about 250RPM, so thats fine.

Figures looks like 60-80K engine, and Freddy is right, you should see still good power from your engine.

But please Freddy, dont use this crap word "pots" let us say on all chambers :)

REgards
Iwan

Title: Compression test result
Post by: asp on February 12, 2005, 08:50:20 AM

i had mine done the ather day,very low but even
had 4.9 to 5.0 on all 6 faces on a 60k engine.

Title: Compression test result
Post by: 20B_boy on February 12, 2005, 10:58:25 AM

QuoteOriginally posted by asp
i had mine done the ather day,very low but even
had 4.9 to 5.0 on all 6 faces on a 60k engine.

Does it still start ok?

Title: Compression test result
Post by: Freddy on February 12, 2005, 12:16:10 PM

QuoteOriginally posted by Iwan
Compression is normaly tested at/about 250RPM, so thats fine.

Figures looks like 60-80K engine, and Freddy is right, you should see still good power from your engine.

But please Freddy, dont use this crap word "pots" let us say on all chambers :)

REgards
Iwan

Seen as you asked nicely. I will use "Chambers" in this thread. :D

Title: Compression test result
Post by: asp on February 12, 2005, 04:32:14 PM

funny u as that 20b boy,carl asked jus after ian did the test,
starts ever time.not 2 long on the starter motor neather,
start ok wen shes worm 2

Title: Compression test result
Post by: J.j. on February 13, 2005, 12:15:40 PM

Hi guys,
It\'s a 96 RS, with 51k on the clock.
Those figures look like engine with 60-80k???

Cheers

Title: Compression test result
Post by: Iwan on February 13, 2005, 07:43:55 PM

My first REX was tested with 7.1 to 7.4 with 50k miles (or about 80k km)

REgards
Iwan

Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: J.j. on February 10, 2005, 11:10:19 PM