On Jul 25, 12:57*pm, Vic Smith
wrote:
On Fri, 25 Jul 2008 12:14:36 -0400, Gene Kearns

wrote:
On Fri, 25 Jul 2008 09:01:33 -0700 (PDT), penned
the following well considered thoughts to the readers of rec.boats:

|On Jul 25, 11:21?am, JR North wrote:
| The result of the failed right bank manifold, allowing sea water to run
| in the exhaust port into the cylinder. That's what seized the valve
| also. Only 2 cylinders show rust on the right bank, none on the left.
| JR
|
|
|
|That makes sense. *So what's the plan?

IMHO........................... Jasper......

Just one data point. *Had a Jasper rebuilt 350 develop a rod knock
with only about 25k miles on it.
I'd go with a factory crate. *IMHO.

--Vic

I'd pull the valves on the two cyclinders with the rust, clean them up
and lap in a new exhaust valve. Stick it back together and run it
until something else goes. It'll only cost a hundred or so for
gaskets and a valve. The engine had good compression so it could go
another 500 hours. The valve problem is from going too long with a
bad exhaust. Not an engine problem.