intake

Hello, I am working on ym XS400 just like a lot people here. I already rebuilt the mechanical parts twice, it was a dead bike and I am trying to revive it. It is now running, whoop whoop. I am stuck on a small maybe funny problem. I cant get the rubber parts that connect the carburetor to the...

Hey all, I'm looking for a NEW set of valves for my 1978 Yamaha XS400. One of my exhaust valves is bent and they are all worn beyond getting the stem resurfaced. The OE part numbers are: 1L9-12111-02 INTAKE VALVE 1L9-12121-02 EXHAUST VALVE They are no longer avaliable from Yamaha in Japan...

I have a '79 xs400, first bike I've ever owned and recently bought it just to have something to mess around with. First thing I had to do when I got the bike was replace the intake boots and when my father in law was helping figure out the starting issues he noticed how on the boots themselves...

Hey all, I have a '82 xs400 that has been mine for about 4 months now. I am a new rider and new to wrenching and I have found a lot of good info on this forum. My bike is below. As you can see, it is a bit chopped up, but the PO did a good job with it and it runs very strong. Lately it has been...

Hello! This is my second post ever and second for the evening. I'm really hitting the site hard on my first day! I have a '78 XS400E, the one with the disk brakes front and rear. I just had the frame powder coated, and I noticed something odd when disassembling the bike. Looking down the...

Hey Guys, In between my carbs and my engine there are these two holes in the attachments. One just after each carb (they are labelled as number 6 on the attached picture). On my xs400, one of them is capped off and the other has a hose coming out of it. The end of the hose looks like it used to...

Let me begin by stating that I will endeavor in the future not to commit anymore Netiquette offenses. Now onto my issue... I removed the stock intakes to perform some cleaning (no carb rejetting, just an exterior cleaning of the carb bodies). I have been occaisionally starting and...

Well I'm about to get an intake maniflold laser cut along with some stuff for some other jobs I'm working on and wanted to start a thread to get some comments on them. I've drafted up two types. The first is just like the stock except not rubber it will be 3/8 aluminum with an aluminum pipe...