What did you do to your Yamaha today?

Very productive day! Finished up with the headers and collector, got the headers wrapped, changed exhaust gaskets, reinstalled the headers and collector.

Painted my muffers, as they're pretty banged up and have lots of rust spots, as well as repaired my side covers and grab rail. Painted stuff is still in the basement though as it's decided to rain.

Replaced a blown rear shock with a good one, so the suspension should be a lot nicer now.

Did a bit of a test to see how the XJ sounds without mufflers....



Aaaaand.... Now I don't know if I'm putting those mufflers back on, or just slapping on some baffled straight pipes. I love how that sounds and it's way quieter than I expected.

 

Well, took it out for a spin today now the exhaust gasket rtv had some time to set.

Sadly, "way quieter than I expected" only lasted until I had the engine under load. That 750 is loud when you wind it up without mufflers.

So... yeah, while I'd be ok with "louder than it was", I'm less ok with "my neighbors will kill me." Sadly, this means the mufflers go back on today.

Still gonna try some pipes with baffles, though... just definitely using baffles. I'd love to keep that deeper note without the volume.

 

Once you have some pipes on there moving the sound behind you it wont seem so loud.
I usually keep the rpm low until i am away from the neighbors then let her rip.

 

Umm....the stock pipes are baffled. No packing in them at all.

 

I don't have the stock mufflers. They look stock, but they're aftermarket slipons and in mediocre shape. I've got a stock pair downstairs on my other exhaust, but they've got rusty holes in the bottom.

I'm not after loud, but I do like the lower note of the open collector. So, I'm going to try with a couple short but wider diameter pipes with baffles, to see what that sounds like.

 

How about a longer video with those pipes off or the pair you have installed
Everybody likes a little Audio PORN.

 

will do with the now re-installed mufflers for comparison.

Definitely will once I've got the new pipes as well.

 

Synced carbs today-
tried out the Gunson Color tune seemed as though I got more sparks from around the adapter then I did inside the cylinder.
tried to adjust fuel mixture on the number 1 cylinder and messed that up. Anybody know how far to turn the fuel mixture screw out ? From the seated position ?
I need a good place to start from_Sigh
That is what I have done today beside riding to work and back.

 

Start with 2 1/2 -turns out

 

Is that a full turn as in one complete revolution 360 degrees of brass screw
If that is correct mine are way off-number four cylinder was only a quarter turn from the seated position.
UM maybe that is why I was getting such good MPG I was starving her of that premium fuel she likes so much.
Thank You

 

Yes...full turns

 

Licensed it.

Finally.

 

Now it is time to put some miles on her! Enjoy the ride

 

Installed paper fuel line filter. It has a clear plastic case. (Briggs & Stratton ). Couldn't pull fuel line off petcock after much effort so I just cut the line at the right place with tank raised up about 5" and put the filter on. There is actually a fair amount of space under the tank for one of these filters. A bit larger than the usual filter used on these old yamahas.

 

paper may cause you problems you want a metal filter element I have the part number someplace,
this link covers install and part number
http://www.xjbikes.com/forums/threads/how-to-install-a-fuel-filter.6352/#post-208637


Primeline part number 7-02357.

 

I'd like to hear more about the probs with paper filters. I've never had any issues. Thanks for the link.

 

Paper filter is too restrictive. It won't allow enough fuel through to feed four hungry carbs. It can cause your bike to "run out of gas" even with a full tank.

 

Picked up my 2nd XJ!!!!!!!!!! XJ 750 Seca...........my wife is now thoroughly pissed that there are two bikes in the garage.

 

the prime line filter is 4 cylinder motorcycle rated at least it says that on the package

 

wait until the third one shows up