korider.com | Hyosung Motorcycle Owners Forum

korider.com | Hyosung Motorcycle Owners Forum

  • January 19, 2018, 10:23:36 PM
  • Welcome, Guest
Please login or register.

Login with username, password and session length
Advanced search

News:

Welcome to Korider.com!

Pages: 1 2 [3] 4

Author Topic: Misfire  (Read 1693 times)

umop-ǝpisdn

  • Global Moderator
  • Forum Addict
  • *****
  • Offline Offline
  • Posts: 6674
Re: Misfire
« Reply #20 on: November 06, 2017, 07:57:05 PM »

No one hires experienced motorcycle mechanics?
Logged
I used to be a sensitive, new age guy, but times have changed and now I am more of a caring, understanding, ninties type.

Register and log in and the Ads below will be gone! :D


albertinhouston

  • Scraping the pegs
  • *****
  • Offline Offline
  • Posts: 779
Re: Misfire
« Reply #21 on: November 08, 2017, 04:33:01 AM »

No one hires experienced motorcycle mechanics?

That hippy life is tuff.
Totally kidding!!
Logged

Cloud

  • Korider's Fastest GT125R.
  • Forum Addict
  • *****
  • Offline Offline
  • Posts: 2423
  • Head removal specialist.
Re: Misfire
« Reply #22 on: November 08, 2017, 02:23:18 PM »

No one hires experienced motorcycle mechanics?

No-one will hire me because I'm unqualified, regardless of experienced.

I can barely afford a 19-year-old chump who is likely to describe my bike as "mate, it's shit mate, mate" fresh out of mechanic college, let alone anyone who is anywhere near as talented and knowledgeable as myself on these specific bikes - even though I don't know anything and just come here for advice.
Logged

vulcan BR

  • Training Wheels
  • *
  • Offline Offline
  • Posts: 16
Re: Misfire
« Reply #23 on: November 10, 2017, 12:40:46 PM »

No one hires experienced motorcycle mechanics?

i got my own experience, only pay to services that i do not have tools XD
Logged

Re: Misfire
« Reply #24 on: November 18, 2017, 01:54:53 PM »

I miss my GTR.
Logged

Joss

  • Scraping the pegs
  • *****
  • Offline Offline
  • Posts: 774
    • Website
Re: Misfire
« Reply #25 on: November 18, 2017, 06:31:44 PM »

[quote author=̮̐͋͋ͅȋ̙̬̱̬ͨ͜͞n̴̞͚ͫ̓͒̑̆̕͞j̧̡̖̩͓̱̖͆̑̾ͫ͊́a̅ͣ͌͛ link=topic=29064.msg257399#msg257399 date=1511009693]
I miss my GTR.
[/quote]

Did you finally sell it?
Logged

Re: Misfire
« Reply #26 on: November 19, 2017, 03:18:59 PM »

Years ago now :(
Logged

Cloud

  • Korider's Fastest GT125R.
  • Forum Addict
  • *****
  • Offline Offline
  • Posts: 2423
  • Head removal specialist.
Re: Misfire
« Reply #27 on: November 29, 2017, 12:28:33 PM »


So, cleaning up the barrel on the rear cylinder, I noticed this on the top rim of the bore.

It's a little bite taken out of the bore. There are four. One per valve. Because of the oversized custom titanium hollowcore valves, the valves are fouling on the barrel.




Now. Options.

Do I take the barrel to a machine shop, bore up, and try to find a piston that's 1mm or so oversize? Or can I get away with getting a solid rasp, and filing the bites away, so that if I re-grind the valves, they don't foul the barrel any more?

Logged

umop-ǝpisdn

  • Global Moderator
  • Forum Addict
  • *****
  • Offline Offline
  • Posts: 6674
Re: Misfire
« Reply #28 on: November 29, 2017, 08:13:43 PM »

Larger pistons are of course heavier.

Heavier means more stress on the wrist pins and conrod. The big question is, can they take the extra stress of the oversized piston?
Logged
I used to be a sensitive, new age guy, but times have changed and now I am more of a caring, understanding, ninties type.

Cloud

  • Korider's Fastest GT125R.
  • Forum Addict
  • *****
  • Offline Offline
  • Posts: 2423
  • Head removal specialist.
Re: Misfire
« Reply #29 on: November 30, 2017, 11:07:23 AM »

Larger pistons are of course heavier.

Heavier means more stress on the wrist pins and conrod. The big question is, can they take the extra stress of the oversized piston?


I'd hack skirt off until it's the same weight.

Anyway they're all like it. Here's new vs a couple of used ones I found on eboo



I might just sand it a little smoother and re-grind los vlvulas so they don't connect any more and seat well.

Logged

Pages: 1 2 [3] 4