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Posted by: ndfrigi Jun 9 2020, 02:56 PM

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!

Posted by: BeatNavy Jun 9 2020, 03:22 PM

IMO those are very good cold numbers.

Posted by: ndfrigi Jun 9 2020, 03:48 PM

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.

Posted by: VaccaRabite Jun 9 2020, 04:22 PM

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

Posted by: Tdskip Jun 9 2020, 04:37 PM

I think you’re good – exciting update, press on my friend, press on.

Posted by: ndfrigi Jun 9 2020, 06:37 PM

Thank you Zach and Tom!

Posted by: porschetub Jun 9 2020, 07:17 PM

Cold test tends to provide more variation ,warm test will put you up further and more even between cylinders.
Good luck.

Posted by: ndfrigi Jun 9 2020, 07:55 PM

Hi Dean, hoping to get the engine test run and have new compression numbers.

Posted by: cuddy_k Jun 9 2020, 09:04 PM

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?