Timmay#678
Member
- Aug 29, 2007
- 48
- 0
Yes, it does.Patman said:Seems curious that the valves would have marks but the softer piston would not.
From the sould of the damage I would guess he had it singing pretty high in the RPM range! Perhaps the valve clearences were tightened up a bit also?
Timmay#678 said:when you rotate the cam around, at one point the inlet and exhaust valves are definatly both open (only a small bit though) at the same time, which I dont think is right, as i thought the valve opening didnt overlap.
Timmay#678 said:Am I better off leaving it all to a proper bike mechanic?
Might be a key indicator.Timmay#678 said:the bike was a little low on coolant and oil, it was the kids 1st 4stroke bike and i dont think he did much maintaince on it.
How low was the oil level?.Patman said:Might be a key indicator.
Patman said:Sure looks like more than 4-5 hours of a newbie rider to me.
It should be more like 560ml or with oil filter change 587ml(which is ment to be about 500ml)
SHSPVR said:Yup he cook the top end I can see it this what happ when let the oil level get to low
It should be more like 560ml or with oil filter change 587ml
coolant should be round 760ml
My guest to why the Valve where hitting the top of piston is that the valve where stick due lack of oil in valve guide so there for the piston push them close.
I would have them check the valve guide and even replace the valve seals
If need help with reinstall best take look at HotCan web and there Video on doing the Valve you will need a shim kit from Hot cam
What do mean by that? I take it you are ref to my spelling and grammer.IndyMX said:Anyone have a decoder ring for this mess?
Patman said:but a good swift kick in the pants can't hurt.
SHSPVR said:Yup he cook the top end I can see it this what happ when let the oil level get to low
Look at Lube in his picture see the blue tint that mean getting hot and lack of oil in all my year of doing cam swap and rebuilds the only ones I have ever seem with black lode is due to lack oilRich Rohrich said:The cam has a black coating from the factory. :coocoo:
SHSPVR said:in all my year of doing cam swap and rebuilds the only ones I have ever seem with black lode is due to lack oil
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