477 posts in this topic
Hello great people of thumper talk. Well I've been having some problems with my old 2002 YZ250F. I was riding a few days ago when my bike just sputtered to a stop almost like it ran out of gas. Well gas was not the problem and I couldn't get her to run she would only fire for a second then die. I found that one of my TPS wires snapped, so I figured the reason it wasn't running was because of that wire. After soldering it back together it was still doing the same thing, so I just left it for the night. When I came back the next day whilst kicking it over I noticed all of a sudden the kicker stopped. the motor was seized. I tried turning the crankshaft at the flywheel and it would not budge forward at all but it would turn backwards or clockwise, so from here I figure I'll start taking the bike apart and figure out whats locking it up. Once I removed the cylinder head I was at a surprise when I saw this relatively large piece of brass sitting on top of my piston. I was thinking where in the hell did that come from. It was getting too late for me to go any further tonight, so I figured I would post a picture on here to see if anyone can tell me what they think this piece may go to. Is it something in the crank maybe up by the valves, from the carburetor I have no idea. It just amazes me that the piece is so intact since it was sitting on top of my piston. Also after that I did try turning the crank again, and it did turn but it felt horrible. It was very clunky and it sounded like shit might be grinding in there so I stopped. Well thanks for taking a look and if you have any insight as to where that piece might have come from please let me know. Other than that I'll be breakin her down further tomorrow.
I have had my 1978 SR500 is storage for 13 years and over the last year I have done a base restoration but yet to do any work on the motor. The bike was running well last in use (13 years ago). I have recently got it stated and noticed it is running extremely hot and backfiring, the idle speed also varies a fair bit. i have had the carb cleaned and put a new air filter in but both didn't seem to make a difference. would anybody have any suggestions how to fix this problem.
would love your thoughts. cheers
I'm interested in a good left hand rear brake set-up for the WR250R. Saw the OXbrake but as it uses a cable instead of a hydraulic cylinder so I heard it lacks power.
So I'm looking at the left hand rear brake kit made by Rekluse. The problem however, is the R's rear master cylinder isn't supported. So I'm thinking I'll swap the master cylinder out for one that is, and install the kit.
So would anyone be able to tell me which of the following Yamaha rear master cylinders would be a straight swap for the R? Rekluse offers the left hand rear brake kit for all of them:
ALTERNATIVELY: I have a 2012 Kawasaki ZX-6R front brake master cylinder and lever from my wreck. What if I found a way to fit that on the bar and just ran a braided line straight to the rear brake caliper and did away with the rear brake pedal completely? Sounds crazy but could it work?
Thanks heaps in advance!
In the past I've used foam air filter oils like uní oil and Yamalube's air filter oil, but Im bottles are dry. I still have some 2 stroke oil from my old bike, will it work just as fine for oiling the air filter? It's Yamalube 2-cycle oil. Thanks for any help you give me.