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Author Topic: 1981 Yamaha XS 400 Special II Cafe Racer build  (Read 45176 times)

Offline riotten22

  • Posts: 162
Re: 1981 Yamaha XS 400 Special II Cafe Racer build
« Reply #70 on: Apr 23, 2012, 17:21:15 »
Here are some new pics, Wrapped headers, added 2.25" side mirror and license plate. Will post updated sound clip this evening.


















Offline honda53rider

  • Posts: 251
  • 77 XS400,73 SL350, 73 RD350
Re: 1981 Yamaha XS 400 Special II Cafe Racer build
« Reply #71 on: Apr 25, 2012, 16:49:39 »
hey i might have missed this in a earlier post, but #1 how much was it to have the 2 into 1 carb boot? (if you don't mind me asking) Also what did you have to do the the carb to run a single. That looks a lot like my BS34's that came on my 77 xs400. Im having trouble with my carbs one is bad so running just one may work out for me.

And Grate Build!!
Why I wear a full faced helmet. 1. They are safer 2. Keeps the bugs out of my teeth 3. Hides my dorky smile I have because my old bike is actually on the road!

Offline riotten22

  • Posts: 162
Re: 1981 Yamaha XS 400 Special II Cafe Racer build
« Reply #72 on: Apr 25, 2012, 17:24:20 »
hey i might have missed this in a earlier post, but #1 how much was it to have the 2 into 1 carb boot? (if you don't mind me asking) Also what did you have to do the the carb to run a single. That looks a lot like my BS34's that came on my 77 xs400. Im having trouble with my carbs one is bad so running just one may work out for me.

And Grate Build!!

You are correct that is a single stock BS34 carb running a 45 pilot jet and a 145 main jet. $90 for the intake manifold, $40 for the Velocity stack (polished filter replacement), and $10 on fuel rated hose to connect the carb to the intake.  Warning: the left cylinder will run lean compared to the right cylinder if you run this setup, the XS400 uses a 180 degree crank which causes one cylinder to run lean.

Offline honda53rider

  • Posts: 251
  • 77 XS400,73 SL350, 73 RD350
Re: 1981 Yamaha XS 400 Special II Cafe Racer build
« Reply #73 on: Apr 25, 2012, 17:31:13 »
Sweet! well now i know that i have a back up plan if i can get the one carb back up and running. I have also thought about running the XS Performance Carburetor Kit from mikes XS its $300 but they would be brand new carbs and i think you get a little power boost with the flat side carbs. Well im really just waiting to get back to my bike so i can work on it. Thanks Again!
Why I wear a full faced helmet. 1. They are safer 2. Keeps the bugs out of my teeth 3. Hides my dorky smile I have because my old bike is actually on the road!

Offline riotten22

  • Posts: 162
Re: 1981 Yamaha XS 400 Special II Cafe Racer build
« Reply #74 on: May 06, 2012, 17:17:11 »
Took some of the last pics of this bike :(  Guy from Hawaii saw it on ebay and after his check clears next week it will be on a long journey to Honolulu.  Sad to see it go but I need to fund the next project / toy.






















Offline GT6

  • Posts: 2
Re: 1981 Yamaha XS 400 Special II Cafe Racer build
« Reply #75 on: Sep 21, 2012, 18:23:13 »
Such a great job!

Offline lcgtr

  • Posts: 1
Re: 1981 Yamaha XS 400 Special II Cafe Racer build
« Reply #76 on: Oct 08, 2012, 08:11:22 »
Hows the CL build going?

Offline riotten22

  • Posts: 162
Re: 1981 Yamaha XS 400 Special II Cafe Racer build
« Reply #77 on: Oct 12, 2012, 17:14:50 »
Hows the CL build going?

Sold the CL, it was too far gone for my liking.  Thinking about going to pickup a 74 CB200t next week though.  Its starting to get cold out and I need a winter project :) Stay tuned...

Offline Griff5268

  • Posts: 332
    • Georgia Moto Ryder
Re: 1981 Yamaha XS 400 Special II Cafe Racer build
« Reply #78 on: Oct 12, 2012, 17:40:32 »
Great work, I love the color scheme..

Offline skillz

  • Posts: 8
Re: 1981 Yamaha XS 400 Special II Cafe Racer build
« Reply #79 on: Apr 26, 2013, 00:21:56 »
Do you remember the size of the front tire? wondering what the max width I can run.  Guessing its a 3.50 /18 or a 4.00 /18.

 thanks in advance!