 Cold Compression test 2.0, 4 cylinders at 150 result |
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| ndfrigi |
 Jun 9 2020, 02:56 PM
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#1
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Advanced Member  Group: Members Posts: 2,933 Joined: 21-August 11 From: Orange County Member No.: 13,474 Region Association: Southern California 
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two weeks ago I drained oil, cleaned the strainer screen and taco plate cover, add new oil and filter and did the valve adjustments.
Before I did the valve adjustments, the compression rates (cold) was 150, 148, 165 and 175. So after valve adjustments still cold engine, all are around 150. Is it a good compression as cold engine and what should I expect when the engine is warm? thank you!          |
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Replies(1 - 8)
| BeatNavy |
Jun 9 2020, 03:22 PM
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#2
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Certified Professional Scapegoat Group: Members Posts: 2,924 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region
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IMO those are very good cold numbers.
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| ndfrigi |
Jun 9 2020, 03:48 PM
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#3
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Advanced Member Group: Members Posts: 2,933 Joined: 21-August 11 From: Orange County Member No.: 13,474 Region Association: Southern California
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QUOTE(BeatNavy @ Jun 9 2020, 02:22 PM)  IMO those are very good cold numbers. Thank you Rob! I Hope I can test run the engine this week and get the engine warm and measure again. Last time I tried to run it but my spare battery has no enough juice. |
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| VaccaRabite |
Jun 9 2020, 04:22 PM
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#4
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En Garde! Group: Admin Posts: 13,465 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
Excellent cold numbers.
They will go up when the engine is warm, but with cold numbers around 150 I'd not bother with it. Zach |
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| Tdskip |
Jun 9 2020, 04:37 PM
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#5
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Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None
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I think you’re good – exciting update, press on my friend, press on.
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| ndfrigi |
Jun 9 2020, 06:37 PM
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#6
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Advanced Member Group: Members Posts: 2,933 Joined: 21-August 11 From: Orange County Member No.: 13,474 Region Association: Southern California
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Thank you Zach and Tom!
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| porschetub |
Jun 9 2020, 07:17 PM
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#7
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Advanced Member Group: Members Posts: 4,707 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
Cold test tends to provide more variation ,warm test will put you up further and more even between cylinders.
Good luck. |
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| ndfrigi |
Jun 9 2020, 07:55 PM
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#8
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Advanced Member Group: Members Posts: 2,933 Joined: 21-August 11 From: Orange County Member No.: 13,474 Region Association: Southern California
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QUOTE(porschetub @ Jun 9 2020, 06:17 PM) Cold test tends to provide more variation ,warm test will put you up further and more even between cylinders. Good luck. Hi Dean, hoping to get the engine test run and have new compression numbers. |
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| iankarr |
Jun 9 2020, 09:04 PM
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#9
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The wrencher formerly known as Cuddy_K Group: Members Posts: 2,482 Joined: 22-May 15 From: Heber City, UT Member No.: 18,749 Region Association: Intermountain Region
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150 is a really solid number...but it's also great that you have little variation between cylinders. Has your engine been rebuilt? How many miles?
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