|
|
Post by Damon4t on Jun 3, 2013 16:16:20 GMT -5
Hi guys, and gals, i am new to the forum, and i think its the best one i have read so far. I have a 2008 Xingyue HB139 49cc Chinese scooter, and i want to buy a 100cc big boar upgrade kit for it, but i was told to "Check my cylinder valve status" before i buy it, to make sure it will size up, i guess.? Does anyone have any advice, or have done this before to help me with this question??? Thank you much:) Confused, in New Hampshire....
|
|
rupert
Scoot Enthusiast
Posts: 236
|
Post by rupert on Jun 3, 2013 17:20:10 GMT -5
"cylinder valve status"
Refers to the length of the valve stems. If you look in the tech section there are pictures and an explanation as to what is going on.
|
|
|
|
Post by Damon4t on Jun 3, 2013 18:07:17 GMT -5
Ok, thank you very much. i will check that out,
|
|
|
|
Post by 90GTVert on Jun 3, 2013 18:30:26 GMT -5
Here's a look at a head with 64mm valves (right) and another with 69mm valves (left).  |
|
|
|
Post by Damon4t on Jun 4, 2013 13:16:40 GMT -5
So, do i measure the valve end to end? and can i pull the valve right out? or is it a process??
|
|
|
|
Post by creeper on Jun 4, 2013 18:10:25 GMT -5
So, do i measure the valve end to end? and can i pull the valve right out? or is it a process?? once you take off the head, as in above picture, you should be able to tell just by looking (no measurements needed) if yours looks like the one on the right, with the valves just about even with the head, then you have the 64mm valves.....if it looks like the head on the left, where the valves are a lil bit past the edge of the head then it has the 69mm valves.....you do not need to take apart the actual valves to measure them....& IF you do be sure you have a valve spring compressor on hand for reassembly. Keep us updated with any issues or progress |
|
|
|
Post by creeper on Jun 4, 2013 18:10:59 GMT -5
 ***you may need a new head gasket once you take apart the head if you plan on driving before receiving your new BBK****.....not 100% sure on that 
|
|
|
|
Post by Damon4t on Jun 4, 2013 18:48:25 GMT -5
That helped me out a lot, ok, i can't thank you enough creeper, i am learning as i go with all this, so you couldn't have put it better for me:) That was exactly what i was trying to figure out, i will keep y'all posted on my next step. But i will be riding for a month or so before i get in to it, but just wanted to have all my ducks in a row. Thank you guys so much....
|
|
|
|
Post by creeper on Jun 4, 2013 18:53:34 GMT -5
i am still learning myself ....I have only done minimum repairs/mods at this point but if you cruise the tech library here & read post by brent & fox & many others on here , you will pick up a ton of knowledge about these lil scoots.
|
|
|
|
Post by Damon4t on Jun 4, 2013 19:17:12 GMT -5
Ok, i am always reading, my head is so full of so much stuff, it is all so fun, and interesting to me, so i am like a magnet to this stuff. Fox has helped me out on a different forum with a few different issues, so i will most definitely being reading, thanks a lot for the help, i am very grateful for the people that still care to help others, for that, i am thankful for to:)
|
|
