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Old 10 April 2016, 09:45 PM
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CharlesTuna
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Default 14mm headbolt conversion
Does anyone know how much boost the 14mm headbolt conversion can take on an EJ20 SCDB with v5 sti heads safely ?

Tia
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Old 10 April 2016, 09:52 PM
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banny sti
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The bores will move before the headstuds will give way
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Old 10 April 2016, 10:27 PM
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Steve Whitehorn
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Given it is a SCDB, 11mm ARP will probably do the job and you will save the hassle for machining for the 14mm
(If you already have it machined for the 14mm then ignore me )
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Old 10 April 2016, 10:38 PM
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johnlogie
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I have SCDB, V5 STi heads and 11mm ARP studs and I'm running 2 bar
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Old 10 April 2016, 10:38 PM
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CharlesTuna
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Work for 14mm headstuds already done and fitted I'm going to be running an SC46 on a forged 2.1 and just wanted to know how hard it could be pushed
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Old 10 April 2016, 10:47 PM
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banny sti
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I ran a billet GT35R at 2 bar on a 2.2cdb with 14mm studs no problem
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