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Author Topic: 1982 Honda CB125s "El Matador" Build  (Read 4306 times)

Offline T.Stanley

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Re: 1982 Honda CB125s "El Matador" Build
« Reply #15 on: May 26, 2015, 16:43:57 »
That looks like a nice little beauty there.  What happened with the .50 over that you're wanting/needing to swap over a Lifan?  Also, does the '82 model use the internal throttle assembly as earlier CB models do?  If so, how did you get the controls to work with those bars?

This CB125 does not use an internal throttle assembly. It uses a throttle tube connected to the right OEM controls.

The bike needed a bit more power for our California roads. The 200cc fit the bill and has enough power to scare me a bit.

Offline T.Stanley

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Re: 1982 Honda CB125s "El Matador" Build
« Reply #16 on: Jul 17, 2015, 19:26:08 »
Motor swapped in and has been a blast to ride. Bike has plenty of power now. Will post pictures shortly.

Offline WhyNot

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Re: 1982 Honda CB125s "El Matador" Build
« Reply #17 on: Jul 17, 2015, 21:07:04 »
Can't wait to see pics.

2006 Harley Davidson Heritage Softail
1975 Honda CB750K5 needs carb work
1974 Honda CB350F2 needs tins painted exhaust
1972 Honda CB175K2 roller no engine
1972 Honda CB/CL350 Engines need roller
1972 Honda CB100K2 needs kicker shaft
1990 Mitsubishi MM needs engine rebuild

Offline rupaulpierce

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Re: 1982 Honda CB125s "El Matador" Build
« Reply #18 on: Jul 29, 2015, 12:50:49 »
pics? pics?

Offline Matty O

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Re: 1982 Honda CB125s "El Matador" Build
« Reply #19 on: Aug 13, 2015, 03:13:57 »
Awesome build, show us the finished article!!

Offline trek97

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Re: 1982 Honda CB125s "El Matador" Build
« Reply #20 on: Aug 13, 2015, 07:54:23 »
its looking really good.
But, you got the front tire on there backwards.

Re: 1982 Honda CB125s "El Matador" Build
« Reply #21 on: Sep 04, 2015, 01:14:18 »
El Matador on YouTube:


Offline trek97

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Re: 1982 Honda CB125s "El Matador" Build
« Reply #22 on: Sep 04, 2015, 06:06:53 »
Any details to share bout the engine swap?

Offline Bigsam302

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Re: 1982 Honda CB125s "El Matador" Build
« Reply #23 on: Sep 04, 2015, 20:56:00 »
Very cool!  8)

Offline Maritime

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Re: 1982 Honda CB125s "El Matador" Build
« Reply #24 on: Sep 04, 2015, 21:08:47 »
Nice little scoot.
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
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Offline Erskine

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Re: 1982 Honda CB125s "El Matador" Build
« Reply #25 on: Sep 05, 2015, 17:42:26 »
Any details to share bout the engine swap?

And what carb have you gone with? Lovely clean build!

Offline 1975cb125s

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Re: 1982 Honda CB125s "El Matador" Build
« Reply #26 on: Sep 14, 2016, 17:29:01 »
Sorry to resurrect this post but some of you wanted to know about the Lifan 200 swap. My engine blew and to fix it at the local Honda shop wouldve been 800$-- if I could find a replacement engine. I searched for an original and nothing was cost effective. I ended up taking my chances with a guy selling a 2008 LF200iii engine- which with shipping was about 250, including the rec/reg coil and all parts of the wiring harness. Figured Id give it a shot and with this forum and other online research I was able to do it with no motorcycle knowledge whatsoever. Of course, it was an amazing learning lesson and Im super excited with the results. You can google this donor Lifan motorcycle and see that it looks completely different that the cb125 but I did a lot of online research and found that the motor was supposed to be a direct swap. (and for the most part it was).  The engine mounts exactly except for the lowest area of the center post in the frame. I had to grind out a semicircle of metal about the size of a quarter to get the clearance for the bulbous bottom, but all in all looked and feels to be structurally strong. The top mounts would fit perfectly but if you switch the mount brackets upside down it fits perfectly with a drilled hole. If anyones interested the main things to watch for is- as i said, the clearance in the center post near the lower rear engine mount, the spline and size of the drive sprocket, and electricals for the new 12v upgrade. The postives are that I now top out around 65- which is scary as sh#% on a bike this light, the motor has a push button start, and i have a ton more low end torque- plus no oil leaks. It was a fraction of the cost to locate ship and install a 40 year old original honda motor.I really grappled with this as I wanted to save this bike and I didnt want it to end up in the junk yard as it was the perfect bike for me and what i do with it around town.  I used the original exhaust and muffler so the jet size needed to be changed and I now run a 96 main. The carb came with the engine but its a cheap chinese one- its called a PZ 30 carb. Works perfectly but i needed to get a new intake manifold for the carb due to the pod filter I wanted to run and the bend it required to get it to fit. I still  have the original air filter on my shelf- just in case something happens to the breath.   Good thing about these little bikes is I did the motor by myself and that was almost 6 months ago now. Bike runs extremely well- all electronics work well and any adaptations required are made very easily with low cost parts.  I hope this helps a little and if you have questions let me know. Good luck!

Offline trek97

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Re: 1982 Honda CB125s "El Matador" Build
« Reply #27 on: Sep 14, 2016, 20:21:02 »
Ok now waiting for you to load the shit ton of detailed pics on a thread of your own.

Offline T.Stanley

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Re: 1982 Honda CB125s "El Matador" Build
« Reply #28 on: Apr 11, 2017, 23:07:49 »
Sorry for the late post. Here is a new video with the Lifan 200cc motor. I used a Keihin PZ30 Carb with 112 main jets.