Correct oil for GSXR front end?

Originally Posted by yorkie_chris

Do you just need a recommended setting, or do you need a walk through of how to set it?

Recommended settings and a rough guide. I done it before but it was on an enduro machine

[fastdruid]

Remove springs, take a piece of wire, measure the 'air gap' on this and bend at 90degrees so the 'air gap' is measured from the end to the bend. Place this so it dangles into the fork leg, fully compress the leg and pour in the oil until it just touches the end of the wire. Remove wire and 'pump' the leg about 5 times (being careful that some design of forks will spray oil out of the top!), replace the wire and top up again. Repeat until the oil level does not drop.

Put in springs and for future reference measure the air gap again, then slide the fork leg up and fit caps.

Druid

[fastdruid]

Here are standard heights


Druid

[yorkie_chris]

pumping fork leg like that won't work, you need to pump the rebound rod up and down to get the air out of the cartridge.

[fastdruid]

Originally Posted by yorkie_chris

pumping fork leg like that won't work, you need to pump the rebound rod up and down to get the air out of the cartridge.

You are totally right, I'm getting myself confused between RWU and USD.

Druid

[yorkie_chris]

No you're not.

You're getting yourself confused between damper rod and cartridge.

Just for everyones info the oil capacity for each fork leg (as I now found outt) is 509ml

[fastdruid]

Originally Posted by yorkie_chris

No you're not.

You're getting yourself confused between damper rod and cartridge.

No I'm not, I pump them while holding the damper rod at the top. NC30 and similar type design I loosely screw the cap back on first as it prevents oil squirting in my face.

Originally Posted by Dr.Tom

Just for everyones info the oil capacity for each fork leg (as I now found outt) is 509ml

Yes but you cannot rely on that as you may have some oil left in there.

Druid

[yorkie_chris]

Originally Posted by fastdruid

No I'm not, I pump them while holding the damper rod at the top. NC30 and similar type design I loosely screw the cap back on first as it prevents oil squirting in my face.

Ahhh, AFAIK the NC30 uses a recirc type adjuster so oil is designed to shoot out the top rather than just bypassing piston

Right Ive added 509ml of 5WT Rock Oil and I have an oil level of 155ml when I put my steel rule into the bottom of the shock. Ive followed the GSXR service manual as best as I could so do I take out some oil to get my 101mm reading???