Nick, something wrong here. Even if the valve stem o rings were wrong, the
guides if properly fitted should not have allowed that much oil consumption.
What about the lower end? John
Nick Coleman wrote:
> Back in August I purchased a complete Aluminum Head (valves, springs, etc.)
> for the 73B. At that time, I was having oil leakage and compression
> problems. Put the head on, and the compression evened out but oil
> consumption stayed about the same. Over the next 4 months oil consumption
> increased to a quart every tank full. So, into the shop it went for an
> engine rebuild.
>
> Just got a call from the shop that the valve O-Rings were the wrong size (to
> large) and the valves weren't properly seated in the head. Possibility that
> the valves where incorrect and to loose as well.
>
> I called Steve at Northwest (where I bought it). Said that he had no other
> complaints -- but has only sold 4 complete heads. I gave him the number of
> the shop doing the rebuild. He said he was going to call them and then talk
> to the manufacturer.
>
> If you buy an Aluminum head from Northwest, you might want to check the
> O-rings and valves before installing it.
>
> Nick
> 73B
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