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Originally Posted by Keithc8
The problem with the small chamber as you describe it is that it kills the flow down low where most street engines need it. I had to open the chamber up to about 80cc to get the valves un shrouded.
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I didn't understand what you meant by 'small chamber...kills flow down low'. Could you elaborate on this a little more?
Do you port the BT heads yourself or use ET or similar shop? Was the unshrouding part of the CNC?
And finally, how much are they?
Thanks,
David