PDA

View Full Version : Need help identifying 80s Yamaha 400cc engine!!



Gyllenberg
12-18-2010, 6:01 PM
Hi, got this engine complete except for carbs, exhaust and the case on the left side of the engine with clutcharm for 70$.. Says its good, and hes a great guy so I trust him. Tried the starter and engine turns over good.

Now, Im not sure what engine it is but I would have to guess that its from a Yamaha XS 400R based on this site: http://www.motorcyclespecs.co.za/model/yamaha/yamaha_xs400r%2084.htm

The engine number is *12E-000259* if that helps anyone out? On with the pics..

http://img96.imageshack.us/img96/2664/jrgengs0455.jpg
http://img718.imageshack.us/img718/2900/jrgengs0456.jpg
http://img228.imageshack.us/img228/5108/jrgengs0459.jpg

If it really is that engine, the site says it should have dual mikuni 34s, anyone know bout the jets? Proper sizes?

And yes, thats my gayboy sexslave to the left!! Nah, not really.. Just a curious younger brother.

motorlou
12-18-2010, 6:29 PM
xs400 dohc

squirts
12-18-2010, 6:36 PM
That's a Yammy XS 400 engine. Specifically, a "12E" series engine. You can download the Service Manual Here:
http://gadget-ebook.com/international-brand/yamaha/yamaha-xs400-12e-service-manual-ebook/
or here:

http://www.motorkari.cz/upload/files/manualy/2210_Yamaha%20XS400%20(1982)%20-%20parts%20list%20(eng).pdf

Good luck 'n have fun :)

Gyllenberg
12-18-2010, 6:54 PM
Thanks guys! Any chance any of you guys know wich wires go to what? Got 3 white in a bunch, 1 red and 1 green in a bunch, and 3 or 4 wires coming out of the crank..

richfrazier
12-18-2010, 7:47 PM
hey...i have the xs400 wiring diagrams off of ebay.they are too big to post here but if you give me your email i can send you them.

Gyllenberg
12-18-2010, 8:23 PM
Would be really apreciated! Email is jgy0226@hotmail.com
Thanks!