STI Block AVCS Breather

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11 September 2014, 02:02 PM

ScottyPPP

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STI Block AVCS Breather

Hi Guys,

Does anyone know off the top of their head what size bung would be needed for the extra breather port on a Ver 8 Sti block? I'm using WRX heads so have no need for it.

Cheers,

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11 September 2014, 05:47 PM

ScottyPPP

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Measured it on the block. 15mm bung should work for anyone else who needs to know.

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11 September 2014, 07:01 PM

MOTORS S GT

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I use 16mm cup plugs, for the block & cam covers.

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11 September 2014, 09:47 PM

MattyB1983

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I used a 16mm bung from ASH hoses.
I froze the bung and heated up the block with a blow torch. Dropped the bung in and once both returned to room temp it sealed perfectly.