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VVT Solenoid VS VTEC Solenoid ??? Any comment?
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<blockquote data-quote="cuscostrutbrace" data-source="post: 3934976" data-attributes="member: 3867"><p>Basically all VVT systems is a electro-hydraulic system,means an ecu switching an electric solenoid,which act as a 'door' for the oil to flow to VVT system.As far as i know,only Lexus IS-F use all electric VVT called VVT-iE.However not all VVT have the same effect,it depends whether if it is cam-phasing,cam-changing or both.</p><p></p><p>Our SVT,BT VVT is cam phasing,advance or retard intake opening&closing angle only,on off system.Altezza Dual VVT-I is advance and retard both intake and exhaust,and also it is continously variable,meaning the angle of advance and retard is not specific across the rpm range.Cam-phasing VVT doesnt gives much 'kick in' feel.</p><p></p><p>Honda VTEC is a cam changing VVT,which completely change the to another cam hence it gives the 'kick in' feel and also exhaust note change as the secondary cam parameters are all different from the primary cam.</p><p></p><p>Honda i-VTEC,Toyota VVTL-i is both cam changing and cam phasing.The best...low to midrange torque and high rpm power..</p><p></p><p></p><p>Info:Just recently browsed the net,looks like LS460 also use VVT-iE</p></blockquote><p></p>
[QUOTE="cuscostrutbrace, post: 3934976, member: 3867"] Basically all VVT systems is a electro-hydraulic system,means an ecu switching an electric solenoid,which act as a 'door' for the oil to flow to VVT system.As far as i know,only Lexus IS-F use all electric VVT called VVT-iE.However not all VVT have the same effect,it depends whether if it is cam-phasing,cam-changing or both. Our SVT,BT VVT is cam phasing,advance or retard intake opening&closing angle only,on off system.Altezza Dual VVT-I is advance and retard both intake and exhaust,and also it is continously variable,meaning the angle of advance and retard is not specific across the rpm range.Cam-phasing VVT doesnt gives much 'kick in' feel. Honda VTEC is a cam changing VVT,which completely change the to another cam hence it gives the 'kick in' feel and also exhaust note change as the secondary cam parameters are all different from the primary cam. Honda i-VTEC,Toyota VVTL-i is both cam changing and cam phasing.The best...low to midrange torque and high rpm power.. Info:Just recently browsed the net,looks like LS460 also use VVT-iE [/QUOTE]
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VVT Solenoid VS VTEC Solenoid ??? Any comment?