130 psi cold compression ?

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Mar 12, 2018 | 06:45 PM

evobigape

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From: montreal

130 psi cold compression ?

is it normal i have 130 psi cold compression test i got a evo 1340 flstf with 10.1 wiseco and ev27 all the rest is sotck i think is a bit low for that modification ?? everething song good no gasket leak run nice

Mar 12, 2018 | 07:35 PM

Uncle G.

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From: Upstate New York

I have no idea because I've never checked my compression cold. the book says to check it hot, so that's what I do.

Mar 12, 2018 | 07:57 PM

RLH3175

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From: Texas

Did you have the throttle open?

Mar 12, 2018 | 09:04 PM

Tommy C

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From: Pine Flat Dam/South Bay Area, CA

Quote:

Originally Posted by RLH3175

Did you have the throttle open?

^This^
Should have around 185. Is the top end broken in & rings seated?

Mar 12, 2018 | 10:03 PM

RLH3175

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From: Texas

Quote:

Originally Posted by Tommy C

^This^
Should have around 185. Is the top end broken in & rings seated?

I had 165 psi with stock pistons with 80,000 miles...

Mar 13, 2018 | 07:41 AM

evobigape

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From: montreal

no the ring is not yet seated and i did not open the throttle i have to wait for the ring seating process for a good reading?

Mar 13, 2018 | 09:15 AM

Mattbastard

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From: Tampa

Yea. Don't waste your time with compression checks until after 500 miles, and on a warm engine with the throttle WFO (wide f@%&ing open) during cranking.