250-500cc Squish Wr 250 04

HI to everybody!!

i'm an italian boy! from pesaro (where are built the TM!!!)

i have an Husky wr 250 2004... i have a little question for us: what is the correct squish??? i'm searching more power when the exhaust valve open... now the bike it's too "smouth"

thanks!!!

bye

Manuel!

I'm not sure what Husky says it should be, but using old tuning guide lines, it's .936mm. That's based off a 72mm stroke.

I do not have the manual in front of me but I think it says 1.2-1.5mm, at least for my 2007.

Ciao Manuel
I like 1mm
Maybe 1.1-1.2 with pump gas
Are you cutting the head, or changing base gaskets?
I had to flatten out the squish band on my 300 to get a good squish.
You will have more power, valve open and valve closed.

thanks to everybody!!

unfortunatley i speak an orrible english

i have changed the base gaskets with the thinest (maybe 0,3mm) in husqvarna's catalog.... but the squish is still higher 1,5mm ....

but i want to decrease on 1.2 -1.3mm...

i have to turning the head?



sorry for my "maccaroni english"

I like to have the squish on my 2 strokes set at .045" (between 1.1 and 1.2mm) and then have the dome machined back to stock specs as to not raise the compression level.

.045" isn't too tight and will allow for some bearing slop. It's a nice compromise between performance, longevity and able to use pump fuel. Unless you plan on rebuilding your crank every 50hrs then I wouldn't go much tighter.

This is just my opinion of course.

You'll either have to turn the head or the cylinder base to get it lower. If you want the bottom end power from the bike, then turn the cylinder base.