Help needed, zongshen wont fire, good spark&fuel - Page 5

Weldangrind · 06-15-2016, 11:10 AM

I'd struggle to have faith in that crank.

zingshoen · 06-16-2016, 02:51 AM

that looks a bit messy. what a pain, given all the effort you ve put in so far! can you clean this mess up with a dremel, and find a woodruff key which fits? as weldangrind says above, this crank may have had it, though. it may be better to split the case and put in a new crank?

what would cause sth like that? bad assembly, wrong size woodruff to begin with?

b44 · 06-16-2016, 09:17 AM

I searched around found a method with using valve grinding paste & work flywheel on with it, seats nicely, loctite ,i know where i went wrong , I didn't torque it to right spec she's all up and running again sweet,
Now im just trying to figure out why I have excessive loud noise from valves?
Im running full synthetic 5w-40

What oil you guys prefer?
Also im still lost to see how/where this vacuum valve coming off inlet manifold is meant to be plummed into,its idling high & hanging wondering if i should just block it off

humanbeing · 06-16-2016, 10:05 AM

The theory is told in 14# http://translate.google.com/translat...95770-1-1.html
OZ's temp are similar to Guangdong...
---
Shell Helix in red bottle (aka HX3) is 1 of proven oil in "workhorse"...

b44 · 06-16-2016, 10:23 AM

Haha 20/50 is my default choice, but ive got some penrite full synth left over thinking it maybe better, ive still got alot to learn

Bruce's · 06-16-2016, 10:44 AM

I wouldn't run full synth until you have a few hundred miles on the rebuild .

Weldangrind · 06-16-2016, 11:07 AM

I like Shell Rotella 15W40.

Definitely plug that vacuum port; it is drawing unfiltered air. What did you set your valves to?

Bruce's · 06-16-2016, 11:35 AM

Any chance that vacuum port is for a fuel petcock ?

humanbeing · 06-16-2016, 05:32 PM

Hopefully that head doesn't met some yobbo b4
---
A ironic epic http://translate.google.com/translat...398&edit-text= Drunk during reassembly (500ml of http://en.wikipedia.org/wiki/Erguotou) ... Apply too much gasket maker, oil path blocked ...
The plug in 15# http://www.chyangwa.net/forum.php?mo...uthorid=343764 MUST present, otherwise...

b44 · 06-17-2016, 03:16 AM

Changed oil to 20w -50, blocked out vachum outlet, she runs sweet,
Just curious if other owners have compared these engines to honda xr200 /250 ?
It feels i little down in performance, sort of struggling to get up slight sandy incline? & has flat spot a round the midrange?
I wasn't expecting much to bigin with just curious?

Weldangrind · 06-17-2016, 11:22 AM

The design is quite close to the old XR200, but the frame of architecture is a little different. The engine you're working with can accept a larger bore cylinder, due to wider stud spacing. I haven't taken the time to compare cams, but I wouldn't be surprised to learn that a hot XR cam might wake up your motor. Maybe Webcams would be a good source.

You could also play with midrange settings on your carb. Have you tried shimming the needle, or only moving the clip?

b44 · 06-18-2016, 02:56 AM

Quote:

Originally Posted by Weldangrind

I like Shell Rotella 15W40.

Definitely plug that vacuum port; it is drawing unfiltered air. What did you set your valves to?

Set both valves at .004
Some say inlet 003 ex 004
But just went with crf230 manual
Noise is a bit less with 20w50 but still there
Boosted fuel to help detonation
She starts easier runs sweet
Still find it pretty. Gutless think xl185 ish

b44 · 08-22-2016, 09:52 AM

Pulled engine out again top end was oil starved, but was wondering what this little rubber bung is or does? Located next to cam bearing
Got spare engine in at the moment till i fix this one

Weldangrind · 08-22-2016, 01:41 PM

Not sure. What does it mate with?

b44 · 08-22-2016, 07:59 PM

Quote:

Originally Posted by Weldangrind

Not sure. What does it mate with?

Found it in that hole, sits between head and rocker cover

06-15-2016, 11:10 AM	#61
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	I'd struggle to have faith in that crank. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
	0

06-16-2016, 02:51 AM	#62
zingshoen Join Date: Jun 2009 Location: Brisbane, Queensland, Australia Posts: 648	that looks a bit messy. what a pain, given all the effort you ve put in so far! can you clean this mess up with a dremel, and find a woodruff key which fits? as weldangrind says above, this crank may have had it, though. it may be better to split the case and put in a new crank? what would cause sth like that? bad assembly, wrong size woodruff to begin with? __________________ 1971 Garelli Gulp 50cc with open ports and 16 mm Bing Carbie + 1980 Honda XL 223 ZS + 2007 Zongshen LZX200G + DR400SM
	0

06-16-2016, 10:05 AM	#64
humanbeing Join Date: Mar 2008 Posts: 2,436	The theory is told in 14# http://translate.google.com/translat...95770-1-1.html OZ's temp are similar to Guangdong... --- Shell Helix in red bottle (aka HX3) is 1 of proven oil in "workhorse"... __________________
	0

06-16-2016, 11:07 AM	#67
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	I like Shell Rotella 15W40. Definitely plug that vacuum port; it is drawing unfiltered air. What did you set your valves to? __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
	0

06-16-2016, 05:32 PM	#69
humanbeing Join Date: Mar 2008 Posts: 2,436	Hopefully that head doesn't met some yobbo b4 --- A ironic epic http://translate.google.com/translat...398&edit-text= Drunk during reassembly (500ml of http://en.wikipedia.org/wiki/Erguotou) ... Apply too much gasket maker, oil path blocked ... The plug in 15# http://www.chyangwa.net/forum.php?mo...uthorid=343764 MUST present, otherwise... __________________
	0

06-16-2016, 10:23 AM	#65
b44 Join Date: Apr 2016 Location: Australia Posts: 89	Haha 20/50 is my default choice, but ive got some penrite full synth left over thinking it maybe better, ive still got alot to learn
	0

06-16-2016, 10:44 AM	#66
Bruce's Join Date: Apr 2015 Location: Sudbury ,Ontario Posts: 855	I wouldn't run full synth until you have a few hundred miles on the rebuild .
	0

06-16-2016, 11:35 AM	#68
Bruce's Join Date: Apr 2015 Location: Sudbury ,Ontario Posts: 855	Any chance that vacuum port is for a fuel petcock ?
	0

06-17-2016, 03:16 AM	#70
b44 Join Date: Apr 2016 Location: Australia Posts: 89	Changed oil to 20w -50, blocked out vachum outlet, she runs sweet, Just curious if other owners have compared these engines to honda xr200 /250 ? It feels i little down in performance, sort of struggling to get up slight sandy incline? & has flat spot a round the midrange? I wasn't expecting much to bigin with just curious?
	0

06-17-2016, 11:22 AM	#71
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	The design is quite close to the old XR200, but the frame of architecture is a little different. The engine you're working with can accept a larger bore cylinder, due to wider stud spacing. I haven't taken the time to compare cams, but I wouldn't be surprised to learn that a hot XR cam might wake up your motor. Maybe Webcams would be a good source. You could also play with midrange settings on your carb. Have you tried shimming the needle, or only moving the clip? __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
	0

08-22-2016, 01:41 PM	#74
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	Not sure. What does it mate with? __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
	0