[DeTomaso] Stud Mount 7/16 1.73 Cleveland roller rockers

[JDeRyke at aol.com]

In a message dated 10/14/10 9:43:36 AM, wkooiman at earthlink.net writes:

> I believe the other rockers squirted a lot more oil.
> I know - the deciding factor shouldn't be how they manage oil, but it is a 
> factor - one that is normally overlooked.
> 
On some aluminum roller rockers, that's manageable. On a 351-C engine that 
was flooding the valve covers and smoking out the PCV, I inserted small 
sections of hollow roll pins in the oil holes, cutting the volume of oil being 
thrown around. A year later, the real fix was clearing a blockage in the 
dog-leg drainback hole, but that took head removal & a valve job as well. I 
think the owner left the roll pins in place afterwards and I never heard any 
more about oiling problems. This will NOT work on the 
stamped-steel-with-roller-tip types, of course. Of course, those types suffer from too much contact 
surface with the pivot ball or sled. A few years ago, one magazine test 
engine with those style 'rollers' burned them up in a single dyno pull with heavy 
springs, even with grooved pivot balls and lots of oil. FWIW- J Deryke