View Full Version : DT230 2 piece power valve?
marks
12th September 2009, 13:03
the DT has been running like shite and rattling at the front of the engine.
The power valve has snapped right through the middle - hopefully I can get a new one but should I be looking for a cause or just throwing the new bits in??
Motu
12th September 2009, 13:10
I guess the thin part is a weak spot,but there isn't a lot of load on it to cause a break.I'd look to tightness or wear in the bushes...the only lube they get is the thick puss coming out the exhaust.I used to get a drop of black puss on my boot sometimes because of a worn seal,which is common on this type of Yamaha power valves.Maybe some sort of maintenance program....clean and lube.Still less work than doing the valves on a 4 stroke.
tri boy
12th September 2009, 13:13
Check for slop in the housing/cyl/bearing surfaces.
Normally, only excess bearing/bush clearance allows for fracture type vibration.
Also check actuator condition, and excess build up of carbon in exhaust port that could of added turning resistance.
That will be $300 consult fee.
Please pay before end of oct, or pay for all my drinks on your trailer trash ride.
(oh yes sunshine, I plan on crashing the party):sunny:
tri boy
12th September 2009, 13:15
I used to get a drop of black puss on my boot sometimes because of a worn ........
I'd see a specialist about that.
Does it burn when you pee?
marks
12th September 2009, 15:58
That will be $300 consult fee.
Please pay before end of oct, or pay for all my drinks on your trailer trash ride.
(oh yes sunshine, I plan on crashing the party):sunny:
the $300 will be cheaper than paying for your drinks....:shit:
thanks guys for the responses
everything (bushes etc) appeared good and the break looked old - it had all worn very smooth at the break point
I'll get a new valve (hopefully I won't have to wait for ages) and see if its all good.
XF650
12th September 2009, 17:02
Remember to wear rubbers Mark - you don't want to catch what Motu's got.
marks
12th September 2009, 22:49
Remember to wear rubbers Mark - you don't want to catch what Motu's got.
the dreaded black puss :no:
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