Kawi2strokes.com Forum

I have the heads off at the moment and they look as if some machining has been made to do away with the head gaskets. Can anyone tell me more about this sort of work on a 500 please. I may be very wrong or just befuddled with age as I didn't remember the heads on my original 500 having a groove machined into them?

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'You don't stop riding because your getting old, you get old because you stop riding'

71 Kawasaki H1A
2005 MV Agusta 1000s
1990 TZ 250A (Reverse Cylinder)
1996 RS 250R Honda
1996 RS 250 Aprilia

That's factory cut, to help stop leakage....

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Twist the throttle, tilt the horizon, and have a great time. What triples are all about...........

For a minute there, I though I'd had a spy in my shop.

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If it surges, that's normal, upshift.

Thanks for that, am I correct in thinking that some heads didn't have this cut?

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'You don't stop riding because your getting old, you get old because you stop riding'

71 Kawasaki H1A
2005 MV Agusta 1000s
1990 TZ 250A (Reverse Cylinder)
1996 RS 250R Honda
1996 RS 250 Aprilia

Nope, or the horrible step either......

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Twist the throttle, tilt the horizon, and have a great time. What triples are all about...........

Look at the bottom of the "cut", it ISN'T a cut, but the casting itself. They are there to allow the soft copper head gasket to "rise" intro them, forming a ring of sorts, for better sealing. It does work.