if so how are they doing n any pointers ?
One obvious thing will be more valve train noise with solids. Once you get into the expansion rates of aluminum hyraulics are desirable. Ask anyone who tried solids in a panhead. I sure wasn't a happy camper with it.
Ron
who makes aluminum heads for a knuckle ?? tia
Below is what I know of who sells them, and "maybe" who is making them.
These are sold stating large port, so not a 100% OEM match.
These guys sell them in the states.
https://aaok.com/index.php/motor-parts-knucklehead/knuckle-heads-parts/big-port-aluminum-knuckle-heads-bare.html
These guys sell them in Germany
http://www.cannonball.de/#Knucklehead
I read somewhere that these guys make them, however aluminum KH heads aren't shown on their site.
https://www.motortechnic-mfg.com/
I get FB updates from them and they were casting some last month
I used a set of there cases ..cannon ball they are dead on good stuff.iam gonna try a set of there alum heads.