4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

compression

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Old 06-06-2008, 06:09 PM
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timeformiller44
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Default compression

what is the spec for compression on an 01 romeo block
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Old 06-06-2008, 06:22 PM
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lilc1511
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Default RE: compression

9:1 as far as i know
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Old 06-06-2008, 06:42 PM
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timeformiller44
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Default RE: compression

i meant compression rating..when u do a compression test
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Old 06-06-2008, 06:44 PM
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oxfordgt
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Default RE: compression

9.0:1 if its a mid 01 up 8.8:1 if its a mid 01 and older
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Old 06-06-2008, 06:45 PM
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Default RE: compression

190ish
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Old 06-06-2008, 06:53 PM
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Default RE: compression

so they should all be around 190ish
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Old 06-06-2008, 07:03 PM
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oxfordgt
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Default RE: compression

They should all be within 20% of each other. I make 190 in my motor I highly doubt you will see above 170 in yours
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Old 06-06-2008, 07:44 PM
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Default RE: compression

so then wtf is my spec then what should i go by...if they are all low how will i know where they should be
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Old 06-07-2008, 01:38 AM
  #9  
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Default RE: compression

If your highest is 170 then all the rest should be no less then 150. I ment 10% in the last thread, I was typing in the dark.
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