Ok I did it again (4 th time) I rode my Pilot hard for about 30 minutes following Tom through 
the trails at Little Sahara (2001 Fall Trip) I felt the power and throttle response dropping off 
but figured since it was only about 65 degrees out I could back off just enough to keep Tom 
in site to let the engine cool off then go at it again, WRONG, after about another 10 minutes 
I see antifreeze coming out the over flow tube, (antifreeze dripping on my leg, I routed the over 
flow tube from the coolant tank up to the front of my Pilot after it happen the first time) in the 
past this usually indicates that the head gasket is leaking and the compression from the 
engine is trying to pressurize the radiator forcing the coolant out into the catch bottle, let the 
engine cool off and it sucks it back into the radiator and your ready to go again, what I think 
is happening is the head gets so hot and expands so much that it scrubs the coating off the
 Honda head gasket allowing it to leak, this usually only happens when it is over 85 degrees 
and the Pilot is pushed to the limits for extended periods of time, I also noticed that it happens 
late in my riding season which leads me to believe a heat cycle issue might be involved here, 
changing the head gasket mid season is not a option to correct this problem... 

The leaking head gasket thing is the only reliability issue I have discovered with my Pilot since 
it was modified I want to correct this problem so I can run all day long as hard as I want without 
having to worry about the head gasket leaking. 


Here is the head after burning 4 gallons of the Amsoil 2000 at 32:1

Here you can see the piston wash on the crown of the piston, looks like the left side of the 
piston is recieving more flow than the right, is that because the intake boot is off set to the
right (when looking a the back of the engine) so more flow is naturally getting to the right 
side of the piston?


Intake is to the left, exhaust to the right, the transfer ports your looking at are on the clutch
side of the engine.

Exhaust port to the left and you can see one right side of the engine transfer port.

left is the rear transfer port, center is intake bridge, right is the rear clutch side transfer port.

3 down one to go :-)

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