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Valve spring compressor size? CG125

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Tamsin
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Joined: 07 Mar 2014
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PostPosted: 14:13 - 11 Feb 2015    Post subject: Valve spring compressor size? CG125 Reply with quote
anyone know what size valve spring compressor I need to remove the valves from a CG125 head?
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Islander
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Joined: 05 Aug 2012
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PostPosted: 14:24 - 11 Feb 2015    Post subject: Reply with quote
Aren't they usually adjustable?
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Tamsin
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PostPosted: 15:02 - 11 Feb 2015    Post subject: Reply with quote
yep, within certain ranges Cool
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smallfrowne
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Joined: 25 Jun 2014
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PostPosted: 17:29 - 11 Feb 2015    Post subject: Reply with quote
Hmm I seem to remember using a big g clamp to do this, and a bit of bent scrap metal.

https://i.imgur.com/h1iF31Al.jpg

Excuse the finger on the lens
https://i.imgur.com/f2eXTONl.jpg

https://i.imgur.com/35tKQxDl.jpg

Dunno what size though... So can't answer yer question I'm afraid Very Happy
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andym
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PostPosted: 18:04 - 11 Feb 2015    Post subject: Reply with quote
I'd say about a 14mm socket.... bit of cloth and hammer should about do it.

Or if you want to be fancy, 14mm socket, magnet and mole grips, same for refitting (without the magnet of course)
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Copycat73
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PostPosted: 18:51 - 11 Feb 2015    Post subject: Reply with quote
do your self a favour and buy the bona fide item..
as clever as it looks to save however much you can by usin a G cramp the correct tool will make life a lot easier.
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Copycat73
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PostPosted: 18:53 - 11 Feb 2015    Post subject: Reply with quote
do your self a favour and buy the bona fide item..
as clever as it looks to save however much you can by usin a G cramp the correct tool will make life a lot easier.
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Fizzer Thou
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Joined: 06 Aug 2011
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PostPosted: 21:48 - 11 Feb 2015    Post subject: Reply with quote
I modified a standard adjustable valve spring compressor by utilising a scrap length of old Renthal handlebar tube.I originally used this method for use on my Exup1000 but found it just as useful on a friends XR250 cylinder head

https://i666.photobucket.com/albums/vv23/WiNot_Rhencullen/Workshop/CIMG2952.jpg

I used the same device for removing the valves from the head of a Yamaha R1

https://i1073.photobucket.com/albums/w384/Rhencullen5/Picture014.jpg

This seems like good value for money Wink Thumbs Up

https://www.ebay.co.uk/itm/10PC-5-in-1-AUTO-VALVE-SPRING-COMPRESSOR-TOOL-SET-FOR-CARS-MOTORCYCLES-BIKES-/380670680099?pt=LH_DefaultDomain_3&hash=item58a1bd9c23
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Tamsin
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Joined: 07 Mar 2014
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PostPosted: 22:41 - 11 Feb 2015    Post subject: Reply with quote
andym wrote:
I'd say about a 14mm socket.... bit of cloth and hammer should about do it.

Or if you want to be fancy, 14mm socket, magnet and mole grips, same for refitting (without the magnet of course)


I've done the "socket removal" method on a morris minor head, but can't work out how you could easily refit using that method...
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Fisty
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Joined: 11 Apr 2007
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PostPosted: 22:47 - 11 Feb 2015    Post subject: Reply with quote
The valve springs are so light on a CG I did it using my fingers.
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smallfrowne
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Joined: 25 Jun 2014
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PostPosted: 16:52 - 12 Feb 2015    Post subject: Reply with quote
Fisty wrote:
The valve springs are so light on a CG I did it using my fingers.


Woof Woof!

<looking at your avatar and trying to think of related innuendo>

"...treat your valves like a woman... something something give it some head... tight valves... as the bishop said to the netball team."

Nope nevermind.
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andym
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Joined: 16 Nov 2010
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PostPosted: 21:33 - 12 Feb 2015    Post subject: Reply with quote
Tamsin wrote:
andym wrote:
I'd say about a 14mm socket.... bit of cloth and hammer should about do it.

Or if you want to be fancy, 14mm socket, magnet and mole grips, same for refitting (without the magnet of course)


I've done the "socket removal" method on a morris minor head, but can't work out how you could easily refit using that method...


Sorry I thought I'd used the socket method to put them back in... turns out it was a pair of pliers:

https://www.youtube.com/watch?v=t_8hpMjLma0
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