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Au 4.0 liter cylinder psi 150 

 

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jake8090
 Post subject: Au 4.0 liter cylinder psi 150
Posted: Tue May 21, 2013 10:46 pm 
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Au4.0 is 150 psi to low for cylinder compression ?? I'm going to be running 9psi into a au motor in the future and need to find out what is good compression

Any ideas would be great :)
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EBXR8380
 Post subject: Re: Au 4.0 liter cylinder psi 150
Posted: Wed May 22, 2013 11:48 pm 
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If all 150 its ok ...

 

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Shortshift
 Post subject: Re: Au 4.0 liter cylinder psi 150
Posted: Thu May 23, 2013 2:25 pm 
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I read on another Fordmods thread that the readings should be 180-200psi (non VCT). How many kms has your engine done, and is that the worst reading of all of them? I had about 170psi readings on stock E-Series engines.

 

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TROYMAN
 Post subject: Re: Au 4.0 liter cylinder psi 150
Posted: Thu May 23, 2013 3:08 pm 
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yes, 170-190psi is where ive seen a few au engines, but 150 psi is still ok, actually it will cope slightly better with boost at 150psi..
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jake8090
 Post subject: Re: Au 4.0 liter cylinder psi 150
Posted: Sun May 26, 2013 9:44 pm 
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The motor I have now is a au 4.0 ,xr6 ef head it has 150 psi in the cylinders but has a lot of blow by running9 psi
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Mad2
 Post subject: Re: Au 4.0 liter cylinder psi 150
Posted: Sun May 26, 2013 9:57 pm 
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Troyman wrote:
yes, 170-190psi is where ive seen a few au engines, but 150 psi is still ok, actually it will cope slightly better with boost at 150psi..




:shock: thats great ta see as i hav an AU mota here that i hav ta checkout.... :roll: :?
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