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jkv45 · October 30th, 2020, 06:30 AM

I'll second Danno's comment - don't run it anymore!

You will need to do some investigating to see the extent of the damage. It may not be catastrophic.

You will need to drain the coolant and start disassembling the engine to see what it looks like. You will need to remove the head and take a look at the cylinder walls for damage.

If that looks good, you may be OK. The head will need to be planed or dressed in some way to make sure it's flat. I have used a piece of quartz or granite and valve grinding compound to dress the head on one of our Ninjas that blew a head gasket. After a new head gasket and dressing the head it was fine.

Make sure to at least check the condition of the oil when you complete the repairs. If it got water in the oil it will be a milky white color. Don't run it like that. Change the oil and filter first.

We bought a Service Manual for ours, and would recommend it if you are planning to disassemble and reassemble the engine yourself.

October 30th, 2020, 06:30 AM	#4
jkv45 Rev Limiter Name: Jay Location: WI Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot. MOTM - Jun '18, Oct '16	I'll second Danno's comment - don't run it anymore! You will need to do some investigating to see the extent of the damage. It may not be catastrophic. You will need to drain the coolant and start disassembling the engine to see what it looks like. You will need to remove the head and take a look at the cylinder walls for damage. If that looks good, you may be OK. The head will need to be planed or dressed in some way to make sure it's flat. I have used a piece of quartz or granite and valve grinding compound to dress the head on one of our Ninjas that blew a head gasket. After a new head gasket and dressing the head it was fine. Make sure to at least check the condition of the oil when you complete the repairs. If it got water in the oil it will be a milky white color. Don't run it like that. Change the oil and filter first. We bought a Service Manual for ours, and would recommend it if you are planning to disassemble and reassemble the engine yourself.