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Removing Cosworth Kidney box

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Old 08-09-2009, 09:24 AM
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cozmeister
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Default Removing Cosworth Kidney box

Can you remove the standard kidney box oil breather without removing the inlet manifold?

Just as important - can you refit it (or a proper breather system) without removing the inlet manifold?

Just want to know how much back-breaking's involved.
Old 08-09-2009, 09:38 AM
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john_p_b
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yeah it'll come out they don't go in that deep really. Twist and pull.
Old 08-09-2009, 09:46 AM
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Graceland
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Yes - a tight squeeze to remove with the engine in the car though - a lever/screwdriver under the box and lever it off

Give it a good clean out while it is out of the car aswell, it will be full of emulsified oil/mayo due to the condensation that forms when the engine is cooling down
Old 08-09-2009, 09:50 AM
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ally7th
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is it not just this bit you remove to fit bailey etc breather kits?

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so you are left with this bit-


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Old 08-09-2009, 09:57 AM
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Graceland
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That is correct - you remove the gauze flame trap and leave the big kidney box - the kidney box is essentially a breather/seperator (on 4x4 it is) with a crankcase breather and oil return and then the top port goes to the air box + inlet manifold via the flame trap on a standard setup. On an uprated setup, you remove the flame trap, the inlet manifold valve and airbox pipe and fit a 19mm internal diameter pipe from the kidney box to the aftermarket breather tank

A bit like this:

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Old 08-09-2009, 10:12 AM
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cozmeister
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I've got a new kidney box to put in instead of my original which is probably blocked and gummed up. So the kidney box remains, even with a aftermarket breather system?
Old 08-09-2009, 10:21 AM
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My kidney box is still there - it serves a purpose and works so it stays
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