Re: 1970 cb 4-1 on a 1981 cb?
Posted by
shinyribs on
Sep 07, 2013; 5:03am
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/1970-cb-4-1-on-a-1981-cb-tp4045011p4045478.html
Way to steal my thunder buddy!

I measured them tonight and they match just like you say. The DOHC heads have what look like deeper fins around the exhaust ports. I'm not sure if you used a SOHC spigot style exhaust if you'd be able to get the clamps on or not.
Hopefully,if I ever get the time,I'm gonna try a spare set of pipes on there and see what it ends up looking like.