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Mods to R33 TB to suit R34 plenum ?


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Hi all , just curious as to how people modified the R33 throttle body when fitting them to R34GTt inlet manifolds .

Would be a straight bolt on but it has a vacuum port in the top of its mounting flange that actuated the charcoal canister valve . The 33s plenum has extra material to seal the back of it but the R34s plenum mount flange doesn't . I suppose the easy fix is to make up a thin spacer plate to seal this port or weld and face the R34s plenum mounting flange . Or is there an easier way ?

Cheers , Adrian . 

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