Some time in the past four months I had to purchase some very long bolts to mount a RAJO four valve overhead. I had to purchase 10, only needed two, and someone asked if I had any spare...
The answer is yes, but I can't remember who asked....
If you still need them, contact me at tonybowker at aol.com
I ran a four valve Rajo for some time. It ran well with high dome pistons for more compression in a 26 tudor sedan. In fact, I drove it home from Seattle to Sacramento in five days after buying it from pics on the MTFCA classifieds in 1999. The problem with these heads is that the rocker towers are held down with two bolts at right angles to the rocker arm shafts, and they will come loose over time. If you watch one of these things run, you can see the rocker arm towers bend back and forth, especially if you have a high lift cam or stiff valve springs. I had to spend a bunch of time repairing the head on my car because the bolt holes for the rockers were trashed. I solved the problem by using a one piece stainless steel rocker arm shaft that served both the rocker arm assemblies and stabilized them. The only down side is that the two rocker covers would have to be slotted for the shaft. This was no problem for me as I did not have any covers. Something to consider if you have one these four valve Rajos.
For what its worth--I had a few covers, the one-piece, made and have a few left for sale if anyone is interested.
Bill Kerndt 563-380-6230