Messages

 

[2001-07 Yamaha XT225, Mikuni BST34 specs -- stock:]

My carb is currently all stock with brand new genuine Mikuni jets. Below are the factory specs and what I've changed. Because these bikes are notorious for being on the lean side from the factory, it's a pretty common mod to increase the pilot one size. So, I'll be installing a #42.5 to see if that helps at all but I kind of doubt it. And on advice from another long time XT owner, the fuel screw has been changed from 2 turns out to 3, but no effect on performance or the idle issue.

2001-07 Yamaha XT225, Mikuni BST34 specs -- stock:
Main jet: #125
Pilot jet: #40  (to be increased to #42.5)
Pilot air jet 1: #70
Pilot screw: 2 turns out  (increased to 3 turns out)
Needle jet: 0-1
Needle: 5DL27-1
Valve seat: 2.0
Float level: 14.1-15.1 mm  (14.7mm)

A new diaphragm slide is on the way so I can see if that improves anything. I will be also be leak testing the rubber carb joint again to see if I can find any air leaks. Unlike the joints on RDs the XT part uses an O-ring between the cylinder, so I have one of those on order as well.

[1975 Yamaha rd 250]

Any other links on this that might be visible without facial book

I don't have FB either. Never will.
Even without an account that listing was visible to all while it was available and I did save it. I think it sold in less than 24hrs. Someone got a pretty good deal. In any case here ya go:

1975 Yamaha rd 250
$2,800
Salem, OR

Driven 3,290 miles
Manual transmission
Exterior color: White · Interior color:

Description
This bike is a survivor and was purchased from a private collection out of Ohio, it has an Oregon title in my name. It runs out strong and please view the pictures of the tank and the braces by the head light. From what I can tell the paint is original. Call or message me with any questions or to set up a time to look at it. If it's posted it's available.

Am I correct in saying that the DG swingers were gold when new? I think that's correct.

Yes, DG Performance swingarms were gold anodized.

Aprilia takes the win in Texas 

Pretty damn exciting race weekend! I was there. Maverick and Acosta were both really impressive.
The weather was pretty good -- temps in the mid-80s and humid, no rain but windy on Sat.
Seemed like pretty good attendance this year. I think that may be somewhat attributable to Trackhouse joining the paddock. A lot of people wearing Trackhouse shirts and hats.

MotoGP Sprint - grid from T1


MotoGP Sprint - start


MotoGP Sprint - T1


Moto3 race - T19 Hayden Hill


MotoGP race - T3


Austin night skyline


Austin Boardwalk hiking trail at Lady Bird Lake

Don't get me started on the ass-hat drivers around here. I've seen it all. I used to commute from OC to the LAX area daily on the bike and sometimes car -- a 70-mile roundtrip on the 405. People do everything behind the wheel except pay attention to the road; cellphones, putting on make-up, laptops, reading a book, smoking pot, and even a lone occupant of a Tesla sleeping while doing about 50mph in the #1 lane. Tailgating, no signals, abrupt multiple lane changes without warning, etc., etc., ...
The way to survive: Ride with your head on a swivel and anticipate that every driver will do the dumbest maneuver possible, and assume they're all out there trying to kill you.

America's First GP Road Race Winner Passes

As I was heading out to do some errands on the MB5 today, a friend stopped by to visit. We happened to go the same direction and he ended up pacing me in his car in the other lane and took a few action photos. Pretty cool to have some pics with me on one of my bikes, but you can't tell I'm doing over 50mph and screaming along at 10,000rpm+.

Seems like a pretty good deal, especially if that mileage is accurate. Looks pretty stock except for the front master.

Looks like I was right, money talks. According to reports, Fabio is now the highest paid rider in GP with a €12m base salary before incentives. That is about double what Bagnaia is getting at Ducati.

Yamaha is now reportedly pursuing adding a satellite team, something they desperately need to keep pace with other brands. There's just not enough data collected and shared with only 2 bikes on the grid.

Awesome! Sounds like a great add-on

might be the carb diaphragm.

I checked the diaphragm really carefully and didn't see anything wrong with it. I can get a new genuine Mikuni one for about $75 (Yamaha wants $160), maybe I'll just fire the parts cannon at it. If it doesn't fix it I'll have a spare for my XT parts bin. 

You probably checked the valve clearances, but I don't see it in your process above. I'd include it in your diagnostic attack

I have not checked yet but I did source the tools and gaskets in anticipation of doing it. Could a bad valve clearance cause a high idle like I have?

almost forgot...
During my extensive electrical troubleshooting I discovered that the main switch had an intermittent short, one of the many issues that made finding the root cause of the no-spark problem so difficult.

Disassembled the switch, cleaned it up inside, checked the contacts, applied some dielectric, and it was functioning like new again.

Wow, that's looking fantastic!