Author Topic: Performance Cam  (Read 5982 times)

Offline LOLitsPOOP

  • Posts: 22
Re: Performance Cam
« Reply #10 on: Sep 05, 2015, 21:08:13 »
To those wanting to do their own investigation, here are some helpful Portuguese keywords.

Cg125 = Cg125
Camshaft = Comando de valvulas
Duration = Graus
Lift = Levante

Turn on Google translate and have fun translating dodgy translation LOL

What ever you find, make sure it has the same shaft bore size (14mm IIRC) and has a circlip groove for fitment to our cam gear.

If you do buy make sure you do registered post as the regular post doest have a great reputation.

Offline 2b

  • Posts: 335
Re: Performance Cam
« Reply #11 on: Sep 05, 2015, 22:28:32 »
Thanks for sharing the outcome. It is great to have a trail blazer!

I see you got WGK1010851 and that has given more top end and slightly less mid, without having to change springs etc. Sounds like a good move for regular use.

Any thoughts on what other cams may be interesting to try, what they may deliver and whether other changes would be needed to make them work.?
He's obsessed with order and clarity. He doesn't like mess.
Harold Pinter

Build thread:

Offline LOLitsPOOP

  • Posts: 22
Re: Performance Cam
« Reply #12 on: Sep 05, 2015, 22:56:13 »
I didnt get a wilder cam because we cant reliably get more revs out of the 156fmi motor.

I dont have a tacho nor run my bike on a dyno so orrible-64 has been a valuable co-test mule. And with his guidance i know we can reliably get 11k - 11.5k. Plus the fact that he's been toying with home ground cams for some time.

With the standard cam I got to a state of tune where I could run the bike off the clock in top gear with 15/34 gearing. 

The end result... valve bounce... bent push rods and damaged rocker gear.

I now have custom heavy duty chromoly pushrods and replaced the rocker gear with something of more substantial design.

Without heavy duty valve springs (my next project) I wont go further as the next over rev could end up its last.

Offline LOLitsPOOP

  • Posts: 22
Re: Performance Cam
« Reply #13 on: Sep 06, 2015, 01:11:30 »
Oh and with this mod the motor come 'on cam' at 8k and beyond.

Offline orrible-64

  • Posts: 713
Performance Cam
« Reply #14 on: Sep 06, 2015, 02:26:12 »
I have run 17/34 gears successfully and if I could get higher gearing  it could be worth a try. May have to try and see if primary ratio from a cg250 including better clutch will fit. Not holding my breath on that though as cg 250 head does not fit

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Offline Racing Ruben

  • Posts: 57
Re: Performance Cam
« Reply #15 on: May 03, 2017, 14:50:09 »
Hey guys
I've been pretty busy this past winter. I got a few things done with some help from a friend.  We got some better compression with the big valve head ( I was driving the big bore kit with the 125head) , the porting is done, got some new valves in and removed every trace of the electric starter engine.
Now I would like to try a better camshaft.  I've been looking at some Brazilian sites. I would like to try the wgk 1010851. 
From wich website did you order this cam, because most of them seem to send their parts only to Brazilian adresses
thanks guys


Offline Racing Ruben

  • Posts: 57
Re: Performance Cam
« Reply #16 on: May 03, 2017, 14:53:35 »
Sorry about the upside down pictures

Offline Rider52

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  • Posts: 510
Re: Performance Cam
« Reply #17 on: May 03, 2017, 15:01:15 »

74 Yamaha TX650
3 Harleys in constant state of sorrow and a Buell
1978 Yamaha Chappy 80 burning up the highway
Cut my motor in half Sportster to Shortster
Rodekilt Revitalization 1977 Honda CB750

Offline Sneikz

  • Posts: 215
Re: Performance Cam
« Reply #18 on: May 14, 2017, 00:17:19 »
Very neat and clean. Well done.
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Offline Racing Ruben

  • Posts: 57
Re: Performance Cam
« Reply #19 on: Aug 08, 2018, 14:00:28 »
Hey guys
I got some good news for all the ace owners who are interested in some better camshafts.  I searched the internet for a long time to find a better camshaft but all I found was brazilian sites who would only send them to brazilian adresses.  So I contacted Douglas Ernani de Carvalho from WGK INDUSTRIAS.  They were very helpfull.  He personally send me the wgk 1010851 camshaft to Belgium.  The part together with the freight cost me arround 90.  The part alone is 20.    I'm very grateful to Mr Carvalho.  Not every company would take the effort.  He would be glad to help the guys on this forum.  So mail him if you are looking for a better camshaft.