best mod for yz85

[mikieobryant]

whats the best mod for a yz 85?

 

[husabutt]

Correct jetting and two teeth added to the rear sprocket will give you the biggest bang for the buck IMHO.

The stock YZ is jetted horribly rich. Oily goo runs down the silencer and then drips onto the swingarm.

First gear is a bit high and spacing between the gears also a tad bit high.

You will be amazed the difference in low end torque proper jetting makes.

 

[mikieobryant]

yea i already changed the jets. it was foulin plugs like crazy

 

[husabutt]

Try the stock KX skide (3.5) and
stock KX needle (NAPE) to really clean up the low end.

 

[Yz-85]

dose the two teeth to the rear sprocket give it more tourqe or what?

 

[husabutt]

dose the two teeth to the rear sprocket give it more tourqe or what?

It doesn't really give the motor any more torque it just changes the gearing. It will be easier to keep it "on the pipe" as the overall gearing will be slightly lower. This will give you the impression that the bike has a bit more torque as you will be able to shift earlier and not rev it as much between gear changes. Your top speed however will be slightly reduced. You will be able to go slower in first gear before the bike stalls which will help climbing steep hills.

On my sons bike I added one tooth to the rear sprocket and reduced the front by one. This is equal to adding four to the rear. It is very quick and quite the hillclimbing bike for a little 85. Top speed has been reduced significantly though.

We also added a 9oz. flywheel weight to help with hill climbing.

 

[Yz-85]

okay. cool.

 

[Dnoones31]

Seat on Th bike

Where can i get thet seat husabutt?

 

[husabutt]

Guts Racing. The seat in the picture has the tall/medium density foam. It makes the seat much much more comfortable.

http://www.gutsracing.com/pages/catalogpages/yamahabuy.html