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Post by creaseuk on Oct 16, 2013 16:18:40 GMT -5
So.. now the 'bent' Lance is put together. I bought the Jonway to use as spares bike for the Lance, then realized all the parts I needed for the Lance were Either worn out, broken or missing on the Jonway. So, today I started work to find the mystery reason the Jonway wouldn't start. The owner assured me it was a 'Carb' issue. Having already been fleeced once.. I was wise.. Well, here's what I found after removing those "all important" 4 bolts. If someone else tells me it "GY6 engines are only held in the frame with 4 bolts" I'm gonna scream!!!  Looking Great Here ! So Far So Good!!  That's not looking so good !!  Good Grief Charlie Brown.. !! So, it looks like I'll be teaching myself how to split the crankcases.. Does the forum offer a tool loan service?? Looks like I'm gonna need a gear removal & variator removal tool.. Anyone got a less damaged crank for sale?? I can't begin to think what a rider has to do to cause this much damage !! |
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Post by PCBGY6 on Oct 16, 2013 16:41:32 GMT -5
Well it may have been a carb issue to start with. Ran lean like crazy and POW.
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Post by pmatulew on Oct 16, 2013 16:58:10 GMT -5
Seriously?! Was there any piston left? I feel fortunate now that the fixer upper I bought only needed a top end.
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Post by creaseuk on Oct 16, 2013 17:59:52 GMT -5
No piston yet!! Strangely8
no swarf in the new oil I just drained either. This is begining to look like sabbotage ( dramatic music)
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Post by PCBGY6 on Oct 16, 2013 18:06:20 GMT -5
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Post by urbanmadness on Oct 16, 2013 19:13:56 GMT -5
still gotta wonder where the piston went.... you can put it back together for under 300 including tools. The tools are not too pricey and they are nice to have around. I need the gear puller for the crank on my 150 and once I have that, I should be pretty much able to break these down without any problems. I have my impact for the variator, flywheel puller and a starter nut socket... so I'm pretty good at this point.
With that level of carnage, I'd replace the oil pump and timing chain as well... Just to be safe, ya don't wanna do it twice!
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Post by creaseuk on Oct 17, 2013 13:31:25 GMT -5
Pieces Of Piston A Contemporary Art Work by Crease..  Sabotage - Now Ruled Out.. Now picking shards out of the crevices. |
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Post by chops on Oct 17, 2013 14:20:53 GMT -5
Ouch!!!
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Post by spandi on Oct 17, 2013 16:01:40 GMT -5
Pieces Of Piston A Contemporary Art Work by Crease.. Sabotage - Now Ruled Out.. Now picking shards out of the crevices. Oh yeah, definitely a "Carb" issue!  |
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Post by sailracer on Oct 17, 2013 16:34:17 GMT -5
I'd just buy a new motor. Time and aggravation-wise I think it would be a less expensive option.I would then drop off the blown motor at the guy's front door, along with a"note of thanks".
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Post by rae4180 on Oct 17, 2013 16:56:04 GMT -5
new motor not worth the time to fix.
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Post by pmatulew on Oct 17, 2013 17:02:07 GMT -5
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Post by spandi on Oct 17, 2013 17:07:37 GMT -5
I'd just buy a new motor. Time and aggravation-wise I think it would be a less expensive option.I would then drop off the blown motor at the guy's front door, along with a"note of thanks". Christmas is coming, gift wrap it first! |
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Post by urbanmadness on Oct 18, 2013 3:46:17 GMT -5
Can you say stroker kit? LOL
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Post by creaseuk on Oct 18, 2013 12:47:13 GMT -5
After some research, I've concluded that it was probably caused by a wrist ( gudgeon) pin failure. This was probably bought on by severe heat caused by failure of the lower engine cover, which was melted off. More than likely, it occurred at maximum revs, the debris had nowhere to go and clattered around until it disintegrated.. I think I'll get a lower engine cover for the rebuilt engine..
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