IMCA Sport Compact Rules

[Carnival4]

I have another question about legal motors. How about the VTEC motors with variable valve timing? Specifically the 1994 Honda Civic, D16Z6? Are these motors legal? How are they similar or different from a motor with variable cam timing?

[MM90]

VTEC, VCT are all basically the same thing just different names. If the engine can change the cam timing while it's running, it isn't legal.

[stock car driver]

IMCA.com has the rules, they are clear and simple to understand.

[Carnival4]

Thanks for the website. Didn't see anything about variable valve timing in the rules except variable cam timing stuff. I have heard VCT is like VTEC and I have heard the opposite too.