One part of the reason Mike uses the open chamber cyl head is because,if he is going to braze them ,he prefers a new casting,less chances of cracks.
Always better when using new or newer castings when you can.
Look how old the castings are for a small chamber head.
When was the last year they were made?
Anytime you are using used cylinder heads you are taking a risk that the casting is good still.
If it goes bad & or is bad & you have done a lot of work to the head,well you need to do some type of warranty?
GMCCORBETT ,
I do not feel bad @ all about my statements on the 194 cylinder head,I still stand by what I say about them.
Also, when Turbo 6 hear devided he intake ports on his 292
he stated he had to increase the boost pressure quite a bit to make the same HP as he did w/no deviders,but it helped w/the un even fueling from cylinder to cylinder.
MBHD