Kawasaki twin - water in oil

[BLES]

Neighbor asked me to look at his John Deere Gator 6x4 Kawasaki V-twin liquid cooled. He thinks it's a 1998 but can't find any numbers on the engine and the tag is mostly missing from the frame. Just the last few digits of serial # intact.

It runs fine but keeps getting water/coolant in the oil. Anyone have ANY experience or knowledge of these Kawasaki twins? Compression is good and equal on both sides. I might try to see if I can do a leak-down and see if I can detect a leak.? Otherwise I guess I'll rip into it and see what I find.

BLES

[KE4AVB]

A few possible sources.

Bad water pump seal or gasket. (I would suspect this first since the engine has good compression)
Head gasket. (but can still be this if gasket are bad)
Cylinder head warped.
Cylinder head cracks.

Caution if you're going to remove the heads back off all cylinder head bolts 1/4 turn and repeat until they are loose. This is procedure for the Kawasaki V twin I tearing down this weekend. It says head warp-age is possible if not done this way. Something I afraid the owner didn't do when he put on a set used head sets he got off Ripbay. They were supposedly new but I see [impressions] where they have been installed before.

[BLES]

Thanks. Never thought about pump gasket. Will keep you posted.

[KE4AVB]

I need to add the intake gaskets to the list as the FD620D I'm working on has water flowing thru the intake. Found this as pulling it down to remove the heads.

Only External leakage; unless, being in through the intake.

[BLES]

He decided he didn't want to do anything with this old engine and found a replacement. I guess I'll never know "the rest of the story".
BLES