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  #101  
Old 06-07-2010, 04:51 PM
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cut the pulley off, get a new one if u must use a pulley setup. I took 45 thousandths of an inch off my Briggs head with no real results. Boring the carb is useless on that engine.
  #102  
Old 06-07-2010, 06:55 PM
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Originally Posted by r_chez_08 View Post
Yeah I could shave the eyebrows, but I need a dremel for that, Would a hand file work? And doesn't it involve removing the piston, or the metal shavings will yet stuck, and score up the cylinder? I could take it out, but I can't get the ***** pulley off to get to the side cover
edit: 0.3", that's like 8mm, which seems a lot. I was thinking of a few mm, like 2mm. I also thought it would seal the head better, as it may have warped.
Sorry, I meant 0.03" .

Hayden
  #103  
Old 06-07-2010, 07:00 PM
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What does boring the carb do?
Not much at all IMO. Just get a bigger carb.

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  #104  
Old 06-07-2010, 11:53 PM
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Ok, I won't bother then, I just thought it may increase airflow.
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  #105  
Old 06-07-2010, 11:59 PM
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I think I will shave the head (0.5mm) then and get the ***** pulley off, and cast a new one..(another thread) .. If not intact. I will then remove the governor, and shave the eyebrows (after removing the piston) and try and remove some of the rust off the shaft, wothout damaging it.
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  #106  
Old 06-08-2010, 02:48 PM
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I would buy a pulley, not cast one, doubt it would hold up
  #107  
Old 06-08-2010, 08:08 PM
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Originally Posted by r_chez_08 View Post
I think I will shave the head (0.5mm) then and get the ***** pulley off, and cast a new one..(another thread) .. If not intact. I will then remove the governor, and shave the eyebrows (after removing the piston) and try and remove some of the rust off the shaft, wothout damaging it.
Check how much clearance there is between the valves and the top of the head.

You'l find a way to get that pulley off, I wouldn't use a home cast one on it.

Hayden
  #108  
Old 06-14-2010, 02:54 PM
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Ok that is annoying. There seem to be two g100s, a 97cc and a 83cc. One with a 46mm piston and one with a 53mm one. Guess which one I got
I may get the pulley off at a later date, but it seems pretty stuck, and I don't want to damage the shaft. Also I do not see the head shaving doing a lot on a 2.2 hp engine
I am shaving 0.5mm off the head.
My other pulleys will be home cast ones. I am not paying about 10 a pulley, cos that would be 30. My budget for my bike is a mere 50 I will post pics of the shaved head soon
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  #109  
Old 06-15-2010, 12:11 PM
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how is the pully held on atm
  #110  
Old 06-15-2010, 03:30 PM
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Key in the shaft and a lot of rust
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  #111  
Old 06-15-2010, 06:06 PM
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have u tried spraying wd-40 and leaveing over night then next day heating only the pully and using a hub pulled the pull it off
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  #112  
Old 06-16-2010, 10:41 AM
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you try heating up the shaft?
  #113  
Old 06-16-2010, 07:36 PM
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Originally Posted by jr dragster Tyler View Post
Why not just run the motor with the worn bushing and the scuffed up bore till she wont go anymore? I bet you that thing will still go for a while, Or untill the points oil log themselves...Then slap a coil on it and run it more!
If you look at the video the flywheel actually moves a lot up and down which would ruin the coil and throw the timing off incredibly.
  #114  
Old 06-16-2010, 11:58 PM
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@ kieran, no I have yet to try that, may give it a go on the weekend.
Yeah the flywheel does move incredibly, I wondered would it be possible to bore out the bushing and put a brass one in there? And sleeve the piston?
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  #115  
Old 06-17-2010, 05:49 PM
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Not worth the price.. Your talking $100-$200 US
  #116  
Old 06-18-2010, 01:04 PM
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i have access to lathes and milling machines at school. i was speaking to the technition, and he said bring it in, bore it out and put some oversized rings in.
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  #117  
Old 06-26-2010, 02:01 AM
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and over sized piston. Plus you have to fix the crank bushing in the block. Kool Bore cylinders should not be bored ever. Good Luck, if you do bore it, be sure to take pics and log it. Have fun.
  #118  
Old 06-27-2010, 08:41 AM
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Yeah I may do the sleevr thing next school year, as I only have 5days left. I also may make a brass bushing. Only thing is, what holds the sleeve in, and stops it from falling down and fking everything up? And what should it be made of? Finally would it run with a missing piston ring?
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  #119  
Old 06-27-2010, 10:35 AM
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The sleeve is pressed in. Luckily with a 4 stroke it wont be that hard, seeing as you dont have to line up ports and such. If you have a hydraulic shop press that would probably do the trick.
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  #120  
Old 05-22-2011, 03:36 PM
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Ok, really old thread, but i have this poor 3hp POS sitting there in about 30 pieces...
I have a crazy idea:
Run the poor thing on vegetables! Or rather their oil.
Apparently the calorific value of it is only about 10% less than diesel.
What i would do:
1. shave head excessively to get a 15:1 compression ratio
2. Install a glow plug
3. Fix crankcase bushing
4. Bore out piston and possibly use a 5hp piston.
5. Port it out

Do you guys think the poor thing would run?
Rob
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