I took the pipes off to have a look up the exhaust ports.
OK, well this doesn't look the best.
I did have a few high speed "clutch in" moments during the first 300kms.
OK, well this doesn't look the best.
I did have a few high speed "clutch in" moments during the first 300kms.
I am fairly sure that this was due to the petrol tank breather not working properly.
This meant that a slight vacuum built up in the tank and hence petrol flow into the float bowls may have slowed down to a dribble or less and resulted in a lean condition after a while at high revs and max throttle.
This meant that a slight vacuum built up in the tank and hence petrol flow into the float bowls may have slowed down to a dribble or less and resulted in a lean condition after a while at high revs and max throttle.
I fixed this problem before my first track day and it seems to be running pretty good now at prolonged high revs/throttle.
Sadly it seems that the LH Cylinder in particular may have come quite close to seizing at some stage?
I am hoping that it will survive the next track day. Then I will pull the heads off and check this out properly.
Looks like I will probably be taking the barrels off as well.
Bloody fuel tank breather!!! Argh.
Sadly it seems that the LH Cylinder in particular may have come quite close to seizing at some stage?
I am hoping that it will survive the next track day. Then I will pull the heads off and check this out properly.
Looks like I will probably be taking the barrels off as well.
Bloody fuel tank breather!!! Argh.
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| RH Cyl |
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| LH Cyl |
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| RH Piston |
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| LH Piston |
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