We made some intake flanges and port matched them to the heads, in preparation for making the manifolds.
We have received a few emails about these heads, yes they were 30 hp single port heads to start with before we modified them, look back at the post on the heads and check the part number :-)
To elaborate a little more, 35.5mm and 32mm stainless intake & exhaust, 6mm stems, high rev springs and 12mm spark plugs.
12mm spark plugs are nothing new, we believe CB were the first to do this on their heads..........
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