Category: Honda CR-Z
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GE8 (RB1) Intake Plenum Physics
The RB1 intake manifold (plenum) as most of you know is a common swap for the CR-Z. Over the years, I have seen many different explanations and interpretations of what the manifold is, how it works and the resultant engine performance. The intent of this post is to describe the plenum and the design goals…
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Honda CR-Z Rear Diffuser
Original Development – 2019 By this time, the car had already been fitted with a flat, Aluminum undertray and a rear diffuser was the next item on the list for fabrication. Model Development – 2020 After constructing the prototype, I became interested in testing the performance of the diffuser and keeping a record of the…
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Part 2: CVT Honda CR-Z with Modified L15A7 Valvetrain: A comparative analysis
L15A7 Valvetrain CAD Models Onshape was used to model the various rocker arms of the L15A7 valvetrain: These models are based on measurements taken directly from the rocker arms I have in hand and plan to use in the car. The arm ratios are 1.7:1 and 1.8:1 for the intake and exhaust rockers respectively. The…
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Part 1: CVT Honda CR-Z with Modified L15A7 Valvetrain: A comparative analysis
Introduction This study is focused on the analysis of the valvetrain stress when changing from the LEA1 to L15A7 cam and rocker assembly coupled with upgraded valvetrain components in the case of a CVT equipped CR-Z. OEM, Supertech, Brian Crower (PAC Racing) and CAT Cams valvetrain components are considered in this analysis. The objective of…