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7.8L compression specification

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Oct 26, 2024 | 04:16 PM

#1

79sparky

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Tuned

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7.8L compression specification

Hi there, I have a shop manual but I can't seem to find what the compression spec is in it. If you know it let me know please. Thank you.

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Old

Oct 26, 2024 | 04:37 PM

#2

85e150

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Welcome to FTE!

Do you mean cylinder pressure when doing a compression test or compression ratio?

16.7 : 1 for the ratio. Scroll down to page 35 which will show page 33 on the page itself:

https://www.dtnaecomponents.com/DTNA...nd7_8L1987.pdf

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Oct 26, 2024 | 05:01 PM

#3

asavage

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[Oops. I missed the diesel reference. Ignore the below]

No absolute specs found, only the 75% guidance:

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Old

Oct 26, 2024 | 05:25 PM

#4

85e150

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Generic search says 300 to 500 psi......

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