what's the differance?

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69crx69

Member
What is the differance between the d15z1 vtec-e head compaired to the d16z6 or 8y heads? Is it the cam or or port design?
 
It's actually a different vtec design. The vtec-e was designed with economy in mind. The z6 and y8 have the true vtec that was designed with performance in mind.
 
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