<VV> Dang 40 yr old aluminum !!!!

[Bryan Blackwell]

I suspect these heads were overheated badly one or many times, #2 and  
#5 usually bear the brunt of this because of the oil cooler and  
(often missing) fresh air hose.

As I recall, you also had issues with the crankcase studs, tho maybe  
that was a different engine.

Since you're now replacing the exhaust seats, that might be the  
problem - those seats were able to shift enough to allow the intake  
to relax.  Still, it may be worthwhile to go with a completely  
different set of heads.

Good luck!

--Bryan

On Mar 5, 2008, at 10:24 PM, D. Barry Ellison wrote:

> So, the bad seat areas will be welded up tomorrow, taken to the  
> machine shop for 6 new exhaust valve seats and one more intake  
> again.  After that, we'll weld a small bead around them to hold  
> them.  (Is there a real need to run a bead around the entire seat  
> or is two 1/4" beads 180 degrees apart enough?  3 beads at 120  
> degrees?)