250-500cc WR 360 info required

Hi all,

Looking for some info regarding my husky. It's a '95 WR 360. Sat in a shed for the last 10 years.

Does anyone know of an online source for a service manual? I have found links for the newer bikes but not for this model yet.

Also hoping someone can list the correct squish clearance for the engine.

Just starting to work through getting the bike back on the road.

Cheers Silas

try to find a manual on ebay or such, they are helpful. just about any year that covers 360 will work. there is a good section about setting squish by different base gasket thicknesses. any questions just ask, i have the same year bike...do you have any pics for us? you have to show the bike for us to help!!

Halls cycles here on ch sponcers link has most if not all available manuals free to download on pdf.
Nice bike

Thanks for the replies guys. No photos yet as the bike is in bits. Wasn't stored very well but is very low mileage.

I know the bike had a new piston and rod kit fitted just before being put in storage and never ran right after this.

I have just checked the squish clearance and it is about 2.5 mm with a 0.3mm base gasket. I believe it should be 1.8mm. What are the options for changing this? Shaving the head? Is it normal for a new piston to change the squish clearance that much?

Was never able to get the original del orto carb to run right so have a shiny lectron sitting here to bolt up.

Thanks Silas

Lectron best mod i have done to my 360, of your triple sure the pistons right and the squish is 2.5mm yrs have some one with a lathe take the extra from the head. But you better be ultra double sure as theres no going back from that.
Thats a lot of clearance!

what method did you use to check the squish??
the book says place the piston in the barrel with the head mounted and push it home, set a dial indicator to zero assemble it and recheck the dial indicator to get the number

Checked the squish with solder on top of the piston with it all assembled. Checked twice. Can anyone confirm that it should be 1.8mm?

Try solder squish band check and you can try to fix squish with the base gasket thickness. When i change the piston on my 250 from Vertex to Wossner, the new piston hit the head and have to put 8mm base gasket to fix the squish.
View: http://www.youtube.com/watch?v=ZUe0p0DqFCk

Wow 8mm?!??? Thats huge

thats like a stroker spacer plate!

he meant .08mm most likely, in US .003in

Yeh but i reads whats i sees lol that video is good simple clear instruction of how to do squish measure, good show Petar

I`m not sure but it was 6mm or 8mm thick. The Wossner piston top was very different from Vertex. Wossner has flat highter top, Vertex has round top. Sorry for my language, i`m sure it`s not accurate, but here we can read, but not write and speak english very good.

6-8mm is blatently the wrong piston for the cylinder.
Its not like the manufactures dont make thousands of these things i would of wanted them to supply one atleast in the same ball park as existing piston.

Still looking at issues with my WR360. Squish clearance is 2.3mm with a 0.3mm base gasket.

Trying to check that the piston and rod are correct.
Only markings I can see are on the rod are G3474 (maybe 63474).
Piston is marked as 2850 and also has a marking that looks like A over W.

Anyone have any idea if these markings indicate correct or incorrect parts?

At the moment looking at having 0.5mm skimmed off the head. Do I need to worry about this affecting anything else?

Is 1.8 mm the recommended squish. Only want to have the head machined once!

Cheers Silas

Cant you just get a .09mm base gasket?

A is piston first size mine says 9w i assume thats gilardoni batch number and the underside of my 360 piston is 2850 this will be the product id number for stock records etc
So you have the correct piston so base gasket or rod is the other variable, will measure my old rod an put numbers of that up for you too.

Heres underside of stock piston

My piston looks almost identical except for a "C" size marking on top and doesn't have the the gilardoni on the underside. Be great if you can post any rod markings up. Thanks

Yup you have correct rod too