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148 to 155 psi in compression

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Old 06-27-2007, 06:08 PM
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pro tint
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Default 148 to 155 psi in compression
i just did a compression test on my motor and had the lowest at 148 and the highest was 155, is thatbad or is it average?
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Old 06-27-2007, 06:09 PM
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the new nos/man
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Default RE: 148 to 155 psi in compression
thats ok! for a stocker 9to1 comp
i got 190 /195 psi on my 11.75 to1 408w
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Old 06-27-2007, 06:28 PM
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pro tint
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Default RE: 148 to 155 psi in compression
so it should run alright with those #'s
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Old 06-27-2007, 06:47 PM
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the new nos/man
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Default RE: 148 to 155 psi in compression
ORIGINAL: pro tint

so it should run alright with those #'s
yes them #s are good , i perfer i good leakdown test though?
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Old 06-27-2007, 11:03 PM
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luckythirteen13
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Default RE: 148 to 155 psi in compression
as long as the numbers are within 10% of each other youll be fine
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Old 06-27-2007, 11:35 PM
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PRO50SC
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Default RE: 148 to 155 psi in compression
ORIGINAL: luckythirteen13

as long as the numbers are within 10% of each other youll be fine
I concur
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Old 06-28-2007, 03:03 AM
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pro tint
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Default RE: 148 to 155 psi in compression
what would it run like if they were low #'s like 95psi? r if they were more than 10psi apart?
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Old 06-28-2007, 03:20 AM
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Mustangkiler
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Default RE: 148 to 155 psi in compression
Youd beusing up andburning coolant or oil and youd be able to tell by the plugs and exhaust and you would definitly know it.
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Old 06-28-2007, 02:32 PM
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Twisted
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Default RE: 148 to 155 psi in compression
ORIGINAL: pro tint

what would it run like if they were low #'s like 95psi? r if they were more than 10psi apart?
In my experience, if they were all like 95 psi,the enginewould be hard to start, and feel soft in terms of acceleration. More than 10 psi apart, and it might run rough.
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