Just purchased my First R, Have ?s

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Aug 19, 2004 | 11:04 PM

#11

butters

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Joined: May 2004

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Just purchased my First R, Have ?s

hhmmmmm...... true

Aug 20, 2004 | 11:56 AM

#12

sam250

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Joined: Jul 2002

Posts: 770

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Just purchased my First R, Have ?s

Quote:

Originally posted by: LT250Rodney
It is my understanding that they alter port timing on the exhaust port. Before powervalves you had to sacrifice top end power if you wanted bottom end and vice versa. The powervalve solved that problem.

Most modern powervalves do alter port timing. The system on the LT's does not. It allows the exhaust into a hollow cavity in the front of the engine case, effectively altering the exhaust's chamber. It's like running a different pipe at low rpm's than at high rpm. More info.