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Author Topic:   Double Hump Heads
Dirt Roller

Total posts: 23
posted February 18, 2005 12:55 PM  
How big can the intake and exhaust runners be ported? Can the intake get pass 200 cc?

Dirt Freak

Total posts: 402
posted February 21, 2005 09:48 AM  
You'll find water at 185-190. This assumes you maintain good port shape. If you port to the bolt holes then sleeve it, you can get approx 190. Bad vacuum leaks though.

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