or do you mean bare like this?
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or do you mean bare like this?
Attachment 11900
:popcorn:
:17::goodtime:
just updated my Album. tricky clicky to get the before/after thing just right. free preview time
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i thought i stopped that last picture from going on, but, oh goodie, just found a Before for my favorite After. have to 'mod' my Album again. i try this up.
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ya ya... like that and that....Quote:
Originally Posted by chruk bashre
this engine is just a bit... 'thinner' than im used to...
At least on the 2012 model there are the 2 welded tabs to hold the pump that ill have to cut at some point
So capped off what was left of the secondary air intake system.
And then before starting the engine, i decided to adjust my valves...
Well, I just like just about everyone else whom has reported, I find my valves dead tight... that is NO clearance at all.
I found this a bit odd being from what i understand a bit of clearance is standard for a push-rod type engine.
And it wasn't even like, they were just in contact and as soon as i loosened the stem the gap began to give clearance... Not at all, it was like a bunch of little turns until finally stress was relived and the gap began to clear.
And this is with the motor cold of course...
So from what i understand, the point of that tiny bit of clearance is to allow expansion of the rods when the engine has heated up...
Well as soon as i started up, the clapping noise of the valves with clearance seemed quite evident.
anyway, i would recommend everyone take a look at their valves as it seems this is something the builders aren't concerned about...
Especially if you have a new bike. I don't really know what it means for older engines... perhaps they have given themselves room already... yikes
chruk, I see you got the valve cover off. The recomended clearances I got from a reliable source are exaust .008 - intake .006. Works for me. Make sure you are in compression stroke or you will be way loose.
Reliable source?Quote:
Originally Posted by Bob form NV
The document from PIT motors recommends .004 & .002
http://www.mychinamoto.com/forums/sh...ll=1#post58046
isn't PIT the importer of the CCW Heist? Isn't the Heist using the same engine? Isn't that a more reliable source?
Do tell...
VALVE LASH. man, somecrap. dongfangin thing. alot of searching. no real good info. i know this has been going on a while. what did barnone say when he was on?
the[PIT-MOTORS]page link from a few threads back says 0.002"~0.004=(0.051mm~0.102mm) we have a 167FMM as you know.
on my bing page alone i saw 0.05mm~0.06mm=0.002"~0.0025"(167FMM-M,heist),
a little down the page, 0.04mm~0.06mm=0.0015" ~0.0025" (167FMM(CG250)).
then a 167FMM-N led me nowhere.
and then if you go this page, you can see another set of specs. http://www.ebay.com.au/itm/CG250-250CC-167FMM-4-STROKE-AIR-COOLED-ENGINE-MOTOR-MOTORCYCLE-DIRT-BIKE-ATV-/360580057495 go here and a bit down the page past the commercials shows a chart of the
250cc shineray 167FMM(CG250) with specs showing 0.04mm~0.06mm. thats a tiny 0.0015"~0.0025" !!!