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Go Back   Australian Ford Forums > Ford Australia Vehicles > Small and Mid Sized Cars > Escort, Cortina, Sierra and Capri

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Old 09-02-2009, 07:28 PM   #1
79eskimk2
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Default Ideal compression ratio for turbo 2l?

hey all . im starting to build a blow through turbo setup 2l for my escort and i am wondering what a good compression ratio is if i want to be running about 12psi boost, thanks for any input ,.

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Old 18-02-2009, 01:53 PM   #2
T3man
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A blow through at 12 psi? I think your biggest problem will be what carby to use. Anyhow CR down to 7.5:1 should be OK for 12 psi.

PS Normally 4 psi is about the max for blow through carby system so I'd be interested to know what your plans are and what kit you are using.
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Old 18-02-2009, 01:57 PM   #3
atec77
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Quote:
Originally Posted by 79eskimk2
hey all . im starting to build a blow through turbo setup 2l for my escort and i am wondering what a good compression ratio is if i want to be running about 12psi boost, thanks for any input ,.
aroubd 7.5 to 8 or so is a good start , blow through max will be around 5lb ...
even with special floats.
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Old 22-02-2009, 02:57 PM   #4
TITO
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I once ran 8.1 with water inj and a 'Stromberg 175 CD' carb draw-through at 10 to 14psi worked well.
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