GY6 Cam Shaft
 

SO this is what my cam shaft looks like. How do I line it up with the piston?

when its together big hole points foward {up}
when piston is a top dead center

I could jjust hear that response...." huh?"

:lmao::lmao::lmao::lmao: I heard it too !!!!!!!

Josh, There are numerous instructional posts on the web showing how to properly install your cam. Do a search on 'gy6 cam install". View as many as you can. you will then have a good understanding of the process. The more research and homework you do, the better your success. If you hit a snag, PM me.

You kill me Kliff. Thats good stuff right there

Take out the plug. Put a straw in the hole. Raise the piston all the way up on the compression stroke. Now your at TDC. Valves should be loose. Remove the rocker arms. Loosen the chain via the chain tensioner across from the starter. Take chain off the cam gear. Remove cam

When you put the new cam in make sure the big hole is pointing away from the piston. The 2 small holes and the straight line should be in relation to the piston.

Now do everything backwards.

Attached is a picture of what it should look like when the piston is at top dead center (TDC) and the cam is properly installed. Just draw an imaginary line across those two little holes and that should be paralell to the edge of the head.

Wow. I never got the emails for these responses. That's weird, but thanks for the info. I'll do what BuggyMaster said in the last response.

its also what olderthan said

And what Chuck said

yep
all three of us said
chuck-olderthan-buggy master

Way back when this one said "...how hard could it be..." I saw a young mancoman on the horizon, one that doesn't read responses, little to know atttention span, and just looking for someone to open up and do it for him.

I may be wrong, just the way I read him. Good luck guys. Me and ChuckO has got the real deal, in a 14 yr old over at that other place, huh ChuckO? Course all of y'all are welcome to help, Matt, aka: dunebuggyduderacerxxx will always be open for help, and some of his tool analogies are funny as all get out!

Umm, Kliff... What are you talking about?

Nothing like talking motor rebuild as soon as a buy that thingy I need. At least the kids doing his thing even if he dont own a thingy yet

He seems sincere, and wants not just to get it done, but to learn from it. we'll even get him talking the lingo before it's over!
Problem is, I ain't a teacher. I have trouble conveying what I mean, I just do. He's gonna be looking to you, ChuckO, and the other older pharts for the illustious words of wisdom. I'll post some pics, and rough out details, as I do, y'all may need to smooth out the rough edges for me...LOL

Ah we do what we can. I can explain till you aint hearing me. Thats why I aint said much to manco lately.

What's this part? I see how it goes on but I don't see what purpose it serves.

Believe it or not, that keeps the engine from being able to fire backwards if I am not mistaken.

Ok then

LOL....yup, you're mistaken.:biglaugh:

Isn't that part the starting decompression spring/lever?

Soooo....did you care to share with us what it is? Now I'm going to have to get out my glasses and take a closer look.

It's exactly what clutch dust says, a starting decompression device, that only comes into play at engine starting speeds, to remove load from the starter.

<insert wrong answer buzzer noise here> ..sorry, no decompressor on the GY6. That keeps the engine from running in reverse. It is called a stopper plate. No kidding.

Well I should rephrase slightly, the engine can't quite run in reverse being that it is a four stroke but it can kick back, and that stopper plate keeps it from kicking too much so to speak.

Hmmmmm, I learned someting today. :hooaray:

I could jjust hear kilff's response...." huh?"

Hardly, I deal with misconception and blind acceptance on a daily basis, you have to if you're going to "re-translate" poorly translated Chinese nomenclature, to American terminology.

Just because an item is called a "stop" and used as a generalized translation, usually by a Chinese, that knows nothing about engines, and less about American engine nomenclature, doesn't make it gospel. Though, as we see in this example, it is accepted as such. And with an inability imposed on us to direct those unable to grasp such a theory with outside links, this site will continue to labor behind those where a wealth of info flows daily.

A chinese manual or publication of any kind, PDF, etc, has HUNDREDS of poor item descriptions, nomenclature, translations, to take those that appear suspicious, and overtly tag American definitions to their function, by name alone, is simply ludicrous.:eeek:

kliff
very well said

Kliff, Great job, or should I say excellent execution on the defensive articulation where as I was clearly doing a cut and paste mockery of your insulting a 16 year old kid's intelligence. You get a star on your forehead, or should I say an astrum on your occipitofrontal region. Yayyyy Nomenclature!!! But the fact remains that if I need this particular part and I'm sticking with Buggyaster's "Chinese nomenclature" of gy6 stopper plate, and I do a general Google search for it, I get exactly what Josh is holding. Now say I need this particular part and I do a Google search for your ever so meticulously translated "American terminology" of gy6 starting decompression device, no such luck, or in your case, negative coextensive fortune. So, if I needed this part by your highly ingenious standards, I'm left with my phalange known as the pollex up my gluteus maximus rectal area. Now go fortwith and gaze upon a speculum, and you will observe a phallus glans. Good Day Sir!

Were you but smart enough to realize all my responses base line, were directed to BuggyMaster, after his first mis-Q to said 16 year old's querry.

But have a nice day, back atya, whilst you go play with all them things, and do all that stuff, your mom probably told you would make hair grow in the palms of your hands.

BTW.... never did decipher an intelligent response from you, about what the parts was, just some fancy sexual deviations you seem to enjoy.... pityful, plumb pityful.

Bull**** Kliff! You got on here right away and assumed his lack of intelligence, even to the point of proclaiming the wonders of some 14 yr. old prodigy on "that other place". You don't educate a kid through ridicule. But I guess you caught your self being asinine and backed off of your initial statement seeing as your devotees quit playing along. Then you come on and blatantly LOL at Buggymasters terminology and bail out without explaination, another di*k move. You routinely show smugness in reguards to peoples querries like you're some kind of hierarchy. You've called yourself out on a prior post whining on about site posting rules. Don't even go into a "show me where" rant again, that was just pathetic! You just come across as a di*khead -> phallus glans deciphered buddy! You may have some mechanical smarts, I'll give ya that, but your general people skills suck at best, or to even quote you "I have trouble conveying what I mean." And now we've dropped all the intellectual speak, if you wanna play that way, with the mom stuff and all, quite honestly when you throw down all kinds of big words then decide to go that route it shows the concept of your true nature. Go to "that other site" your so proud of, and stay the hell there!
Good Day Again Sir!

My my...touchy aren't we...LMAOROTF!

josh i sent you a pm

I didn't say that for the sake of what it is called, I actually know what it does. next time you have your valve cover off, take a good look at how it functions. It really does prevent the engine from running backwards. I was seeing if you actually knew what it was when I asked you to share what you thought it was. No harm done though.

I'm just wondering who kliffs fan club is. Or devotees as you put it. If you dont want folks from that other site here then just say so.

He's got a fan club? :lol:

All people are welcome here!

Noob question here, but what "other" site??

Not sure if you can post it

You are absolutely correct, it is NOT a decompression device of any sort. But I still have trouble grasping it's ability(strength wise) to arrest the motion of a back fire. That is usually a violent and powerful reaction, even at idle or engine cranking speeds. Now my curiousty is peeked, because I have been blindly disabling them, thinking as before.

Next time I do tear into one, still OEM equipped, I will do just that, I will put it through every scenario I can come up with, to find it's intended, and factual function.

Sorry 'bout all the clamour...my bad.:crying::doh:

PS.... what 'ffng fan club? devotees? HUH?

I don't think it is a dead blow stopper. If I remember right, it will actually hold the exhaust valve partially open or something like that. Has to do with how the rocker shafts work.

Sorta like a lot of "automatic" decompression systems do...