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Author Topic: 1971 Kawasaki G3SS  (Read 25167 times)

Offline Jhtjon

  • Posts: 12
Re: 1971 Kawasaki G3SS
« Reply #90 on: Sep 16, 2014, 17:57:33 »
Bump Any updates?

Offline Walms

  • Posts: 399
Re: 1971 Kawasaki G3SS
« Reply #91 on: Sep 17, 2014, 08:41:33 »
Unfortunately, I've dropped the ball on this project... I had to rebuild my triple motor over last winter and that pretty much soaked up my motorcycle funds and I've been too busy riding that one for the summer months.
I hope to get busy on it again this fall. :)

Offline 82GPZcafe

  • Posts: 11
Re: 1971 Kawasaki G3SS
« Reply #92 on: Dec 11, 2014, 16:36:42 »
just found this topic and decided to share my '69 G3SS:



Offline coyote13

  • Posts: 1201
Re: 1971 Kawasaki G3SS
« Reply #93 on: Dec 11, 2014, 18:27:40 »
Far cry from a stock G3, that is a thing of beauty sir!
Half the fun's in the get there...

Offline Walms

  • Posts: 399
Re: 1971 Kawasaki G3SS
« Reply #94 on: Dec 11, 2014, 22:43:38 »
Very nice bike indeed!

Offline 82GPZcafe

  • Posts: 11
Re: 1971 Kawasaki G3SS
« Reply #95 on: Dec 13, 2014, 11:17:07 »
Thanks, still need to finish some of the wiring to rear tail light but she runs.  Here is a picture of what I started with, found it in sitting in a barn on a job site:


Offline fieldpice

  • Posts: 122
Re: 1971 Kawasaki G3SS
« Reply #96 on: Oct 07, 2016, 13:26:29 »

This bike will be my daughter's first street bike...
Timid little suckers with a stock HP rating of 10.5...
The good part is this little rotary valve 2 stroke can be modified to make double that HP...  :D She weighs in at 174lbs and I'd like to get it down to 160...

Basically hide all the electrics and oil tank in the tail, upgrade the front brake to disc., build the motor and pipe.



I got started on the motor over the holiday's by shopping on eBay...
The stock cast iron 3 port 90cc cylinder was upgraded to a G4TR 5 port cylinder. At the same time, I bought some cases from a 1993 KE100, mainly to save some port work time to adapt the different cylinders...



This is the bike that inspired me on this project... Not mine or anyone I know, I just found the image on the web.  I photoshopped my first go for the pipe layout.





With any luck, I'll have it ready for the start of riding season in May... Maybe wishful thinking though!!
how would you double the HP


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Offline Walms

  • Posts: 399
Re: 1971 Kawasaki G3SS
« Reply #97 on: Nov 08, 2016, 08:44:01 »
The short answer is port timing and shape, a modern pipe design and larger carburetor.


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Offline FrankenBike74

  • Posts: 9
Re: 1971 Kawasaki G3SS
« Reply #98 on: Jan 29, 2019, 14:05:57 »
Hello everyone! New to this forum and still trying to figure out my way around it. It's nice to find other guys who are building and restoring G3SS's, I've got two myself. One is a 72 and the other a 74. I'll have to get pictures up at some point for everyone to see. Love these small bikes, they have a lot of character and are fun as hell to ride.

I saw you were rebuilding/replacing your exhaust Walms. Do you, or anyone else on this thread for that matter, by any chance have a G3TR high pipe? I'm making my 72 G3SS into a scrambler and dislike the idea of a low pipe when out in the woods.
1972 Kawasaki G3SS-B
1974 Kawasaki G3SS-D

LET THE GOOD TIMES ROLL

Offline Walms

  • Posts: 399
Re: 1971 Kawasaki G3SS
« Reply #99 on: Jan 29, 2019, 14:17:24 »
Sorry, I only have the low pipe myself.


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