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Message: <blockquote data-quote="pcmoddingmy" data-source="post: 3468471" data-attributes="member: 25616">Nice topic. Just to add a few more things on combo/hybrid 20v stuff. Which one has higher compression?1. BT block + BT head + SVT piston2. BT block + SVT head + SVT piston3. SVT block + BT head + SVT piston4. Or other configurations...I heard somewhere that BT (block+head) using SVT piston can improve compression. But some say if use SVT piston on BT block, must use SVT head as SVT piston and SVT head only can produce higher compression. Is it true that SVT piston is more durable than BT piston?Anyways, didn't toyota rate BT at higher compression than SVT on paper spec?bro km_chew: I've tested an AE92 corolla with SVT engine and full BT wiring... the result was good but I still feel that ori BT is faster. Prolly would be best to test on same chassis with same weight / setup. Also, usually SVT convert to MAP or BT wiring will usually not change to BT ITB because a lot of work required and might have idling issues. It is also costly to port match the SVT's intake to BT's ITB, because SVT's head have "teardrop" design. Correct me if i'm wrong...</blockquote>

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