Problems with my Poorly maintained 2002 DT only 6500 miles
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That head will want a gentle skim. I wrote a tutorial about how to get that done.
Get the barrel down to a specialist to get them to see whats what. Can't see from tbe photo but it might not be too bad.
I would make sure the oil pump works correctly, increase the oil slightly or bettee still go premiz.
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Thanks for advice bringing all the bits back to UK at Xmas ,to a good Mechanic in my area for re bore etc.
The pre-mix idea is a very good one as I read on a blog about a guy who had 3 engine seizures before realizing it was the oil pump on his DT, In my humble opinion I think the previous owner ran the bike with no airfilter loose exhaust manifold which would in itself cause overheating plus PV not working and in shut position,
So on the bright side I think the CDI is OK as spark plug sparks
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Okay,
Firstly CDI is not the only thing you can determine from the plug colour. I was thinking more fuel ratio since cdi does not control fueling. And cdi tends to be stock ignition curve.
Yes air filter will cause premature wear of the piston. But this would be evident in the reed cage and piston walls.
If it were me I would restore all the missing bits. Boost bottles snorkels and up jet it to 240 main jet.
I would replace the exhaust stud. I can't see why this would cause it to overheat though. I appreciate the scavenger process will suffer because of the harmonic resonance charge lost because of this stud. But then power would be lost too so it would only run a little hotter.
But whatever.
Keep us posted
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Sounds like someone read on Facebook that they were all restrictions so removed them. Forums are the best for this sort of information and you have come to the right place.
The gain/loss might not be noticeable. Certainly the sound will bw different. But trust me when I say it's for the best that it be restored.
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Cause there is nothing to be gained removing the snorkel, wat a load of bs. Put the right pilot jet in and set the mixture screw up right and there is loads of bottom to mid to be gained.
