timeing chain please help


9 replies to this topic
  • let_me_color_u

Posted September 24, 2007 - 12:58 PM

#1

i am puting a athena big bore kit on my 06 yz450f i cant get the timeing chain back on, yes the tensiner is out and the front guide is where its supossed to be any tips? please help, the book just says "put it on" well i cant i dont know what im doing wrong

  • grayracer513

Posted September 24, 2007 - 01:22 PM

#2

Assuming that you are right, and the front timing chain guide is correctly located where it pegs into place between the cylinder and the head, and that you are putting the chain up over the cam, and then rolling the cam into place,
what you have likely done is to "loop" a link off of the bottom of the crank. Remove the flywheel to confirm and correct this.

http://www.thumperta...405#post3150405

  • let_me_color_u

Posted September 24, 2007 - 03:15 PM

#3

i checked it, it is on the bottom sprocket good, it seems to short, im going crazy with this thing, anything else i can look for?

  • SXP

Posted September 24, 2007 - 03:21 PM

#4

i checked it, it is on the bottom sprocket good, it seems to short, im going crazy with this thing, anything else i can look for?


Make sure the two cam bearings are pressed firmly down in the half-moon cut-outs in the head, otherwise they will sit kinda high and not allow the chain to stretch over them.

  • let_me_color_u

Posted September 24, 2007 - 03:35 PM

#5

i will check it, but i have even tighten the caps down and tryed, its like i started with the exhaust and i can get the chain on fine, when i goto put the chain on the intake it will only get half way on the top, if i put it all the way on the sprocket i cant pull it even close to where its supossed to go,and even if it would the marks get turned, can someone please tell me a step by step procedure for this maybe im missing something, this is the first time i have done this

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  • jbrooks26

Posted September 24, 2007 - 03:57 PM

#6

Maybe you could post up some pictures. You will have to slip the sprocket into the chain and then rotate the cam down into the journals. They are a pretty tight fit and you may have to do this several times before you get the timing right. Good luck, and stick with it. You will get it in there.

Josh

  • let_me_color_u

Posted September 24, 2007 - 04:03 PM

#7

thanks man, i think i need to step away from it for the night, maybe ill have better luck tommorow,

  • let_me_color_u

Posted September 25, 2007 - 12:09 PM

#8

i went to it fresh this morning, thanks for all the help, especaly the guy that said stick with it, they rolled right in this morning thanks again everyone

  • let_me_color_u

Posted September 25, 2007 - 12:57 PM

#9

thanks Josh, i got it you inspired me

  • jbrooks26

Posted September 26, 2007 - 03:24 PM

#10

Glad to help, Lord knows I've been there. Let us know if you need anything else.

Josh





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