[V8] Engine rebuild options

pashamad at aol.com pashamad at aol.com
Wed Aug 27 22:42:11 PDT 2008


Yes, Steve, this type of separation process is used by humans from ancient times and works
 nicely in V8 engines!

Pasha


IMO we're not talking about the head design, rather the design of the oil
apor recovery system that sits in the valley between the heads.  Years ago
cott and I compared notes on this ... What I found in my research of oil
apor recovery systems was that some manufacturers use brass or steel wool
s a surface onto which the oil could collect ... where it would hopefully
rain into the return galleries as Dr. Oeldrucker intended.  What happens on
cceleration is the oil sloshes up to the line where only fumes are intended
o pass.  One time I pulled the line at the front of the engine where the
il recovery line attaches to the intake manifold and saw signs of liquid
il.  If someone wanted proof positive they could block the line at the
ntake manifold, feed the vapor recovery line to some sort of container ...
nd then go around and have some fun for a little while ... decelerating
own long hills and then punching it at the bottom, or replicating any other
equence that in the past has caused a smokescreen a battleship captain
ould be proud of.  I suspect the issue will be resolved ... 
My theory as to why a rebuilt motor resolves the problem is that the tighter
ings/valve seals reduce the amount of blow by gasses, which leads to less
il vapor to build up in the recovery system.  I have a pad of brass wool
hich I was planning to drop into
 the recovery system on the PT I have
itting in the garage (that engine that came from #2).  
Steve B
an José, CA (USA)



More information about the V8 mailing list