torquing cylinder base nuts....

[skid jackson]

page 2

http://www.motionpro.com/documents/pdf/08-0134.pdf

[Radbuster]

The low cost option would be to torque them down to "about right".

Using a regular spanner, being patient and going in a criss-cross pattern, they can be tightened using the same strength as a regular 12mm/13mm hex, not more. Don't get carried away and give it more "just to be safe, and then some more".

4-strokes, yes, they are critical and you can actually get access to using a torque wrench where neede, but this is the joy of 2-strokes in that it is not rocket science and special tools are not really needed.

Also, a mistake with these machines is not $2000.

Later, F

[Trailrider]

Get the Motion Pro wrench, will save a lot of trouble.

[Adrian]

I had RandB do the head on one of my bikes. I switched piston brands when I put it back together and the compression distance was different. I removed .5 base gasket and run only the .3 gasket. I hate the way it runs. It has way to much off idle snap. If the power came on 500 rpm later it would be fine. I think the added head work and dropping the port timing has did some evil to this bike and it is something to think about. All things being the same I going to put the .5 base gasket back in the mix. It sounds strange to much power, but it is in a bad spot. It hurts people in the woods.

[skid jackson]

too much juice in the wrong spot sucks!!
have you tried some taller gearing. maybe the extra get up and go will pull taller gearing and not be so snappy??

[Adrian]

You can run a gear high and its still bad. I like it on the mx track. I think if we put ktm suspension on it we could use it to do away with the prison system. We could just sentence people to do laps on it. After their arms had been yanked out of their sockets countless times and they hit every other tree on the course they might opt for lethal injection. I have yet to have anyone ride it in the woods and like it. It does rip! I do wander if pulling out some ignition timing would help.

[GMP]

Yeah I hate too much yank off idle, thats why the 250 is a nice bike for both trailriding and racing. Adrian you have been around for a long time, I'm sure you tried retarding the timing and/or adding a reed spacer, did either help? Maybe some fine jetting changes down low as head work makes them real crisp.

[Adrian]

I've tried jetting and it does tune it out, but it loads up. It has the reed spacer. I should retard the timing. I'm torn between that and putting the base gaskets back to stock. It ran fine before. with four bikes it's just easier to ride a different bike so it don't see any love'n.