This is more of a question for the rest of the list than an answer as I'll
be pulling my own head for a bi-opsy next month. Would it be worthwhile to
give the rest of the valves a grinding by hand while the head is off? Or is
this reserved only for old Briggs and Stratton mower engines?
Paul
----- Original Message -----
From: "Robert Palmer" <rbpalmer_nrt@hotmail.com>
To: <lro@koan.team.net>
Sent: Sunday, April 13, 2003 6:16 PM
Subject: [lro] While I have the cylinder head out...
>
> Finished pulling the cylinder head - and found the exhaust valve in
cylinder
> #2 had a couple of pie-shaped gouges in it. Beyond that, all of the
valves
> look pretty sooty - which coincides with my sooty spark plugs (I had them
in
> there for less than 30 minutes running time and they came out coated in
> black soot) - so I guess I get to lean out the mixture screw on the carb
> once I get everything back together.
>
> So a couple of questions :) First, I'll be ordering all of the bits to
> replace the exhaust valve, plus the replacement head gasket. Rest of them
> look fine - so is there anything else I should be ordering while I have
this
> torn open?
>
> Second - How can I tell if my head has already been milled to 8:1 or not?
I
> checked for the stamp and it looks like a 7:1 head. Can I go by the push
> rod length, or should I get the thickness measured, and mill down to
3.590"
> (v. 3.690")
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