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not pulling under load
https://vintagedirtbikeforums.alp-sys.com/viewtopic.php?f=21&t=4537		 Page 1 of 1
Author:  bollockybill [ Sun Aug 30, 2015 4:46 am ]
Post subject:  not pulling under load
Hi all,
Just rebuilt my 2nd 78 cr125 starts first or second kick revs cleanly right through but put it in gear just doesn't want to pull. Any info welcome, had someone said my carb is to small its curently has a 28mm kehin would a 33mm make a difference.
Thanks
Malcolm
Author:  bollockybill [ Sat Sep 05, 2015 5:54 am ]
Post subject:  Re: not pulling under load
Well the answer is no it's another problem! But still open to suggestions from those in the know!
Author:  brett campbell [ Fri Sep 11, 2015 5:34 am ]
Post subject:  Re: not pulling under load
I would use the carb it was designed for with a thorough rebuild.
Author:  bollockybill [ Tue Nov 03, 2015 4:06 am ]
Post subject:  Re: not pulling under load
Only getting 85-90p.s.i. reading on compression test suspect piston & cylinder!!!.............................. on last bore Suzuki piston in it?
Anybody got a cylinder and piston preferably on 1st bore.
Author:  bollockybill [ Sat Nov 14, 2015 5:29 am ]
Post subject:  Re: not pulling under load
Hi all couple a pics

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Author:  Rick [ Tue Dec 15, 2015 6:46 pm ]
Post subject:  Re: not pulling under load
Clean bike.
Consider a new sleeve instead of used cyclinder. Hard to find one with decent life on it anymore.

Rick
Author:  bollockybill [ Thu Jan 21, 2016 4:10 pm ]
Post subject:  Re: not pulling under load
So folks, latest update........it was the cylinder. got one on first bore very very clean, std piston all within tolerances. Sand blasted, new paint job, new gaskets then put it all back together, comp test @ 150 p.s.i carb on original jet sizes according to the manual.............f*****g hell!!! :shock: goes like s**t of a shovel. :D
Pics will follow.
Author:  brett campbell [ Fri Jan 22, 2016 6:52 am ]
Post subject:  Re: not pulling under load
Good to hear! Lets see those pics.
Author:  bollockybill [ Sun Jan 24, 2016 8:24 am ]
Post subject:  Re: not pulling under load
Hi folks, here are a couple of pics.

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Author:  bollockybill [ Sun Jan 24, 2016 8:33 am ]
Post subject:  Re: not pulling under load
And the other (without light kit)

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Author:  rayivers [ Sun Jan 24, 2016 11:21 am ]
Post subject:  Re: not pulling under load
Both bikes look great!

Ray
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