<VV> Need some tuning help

[BobHelt at aol.com]

Scott,

It sounds like the problems are a result of the 110hp heads. The change  in 
Cr is likely causing the problem.
Try setting the initial timing to something between 4 and 12 degrees and  
see how it runs. Also try a different distributor.
 
But the overheating?....How do you know that it is overheating? This isn't  
a likely occurrence from your description of things. Are you sure you are  
getting overheat?  
 
When you say it's set to 12 deg, runs but won't restart,  please  define 
conditions. Is the engine turning over? At what speed ? slow? Will it  start 
then if you retard the timing a little?
 
Did you change anything else? Are the valves set correctly? I ask, because  
your engine should start and run pretty well at either 4 or 12 deg. 
 
I'm inclined to think something else is causing the problem.
 
Bob Helt
 
 
In a message dated 11/6/2015 10:46:00 A.M. US Mountain Standard Time,  
virtualvairs at corvair.org writes:

I  recently rebuilt the engine in my '61 Rampside due to several dropped
valve  seats. The engine is (as best I can tell) the original 80hp, 4 spd
that  came in the truck. I installed new 30 over pistons and jugs, new
lifters,  new head studs and remanufactured '64 110hp heads. I did not split
the  block so it has the original camshaft installed. If I set the timing to
12  degrees BTDC it runs great but overheats after driving any distance  and
will not restart. If I set it to factory recommendation 4 degrees BTDC  then
as soon as I hit about 30mph it just lays down and has no power, but  will
restart no matter how long it runs. I'm guessing the advance curve  needs to
be adjusted but I'm not sure what I should do.  Any  suggestions?



Thanks,



Scott  Ford