Maintenance

Sprockets

The Amazing Sprockulator™
Sprocket change calculator

  1. All default values are for a standard GPZ 1100.
  2. Enter the new front and rear sprocket sizes.
  3. Select the gear, rpm and speed you would like to see the change in.
  4. Click on the Calculate button to see the change in speed at a constant rpm in a given gear as well as the change in rpm at a given speed.
  5. For results in a different gear, different rpm or different replacement sprocket sizes, just change the appropriate figure - the page will automatically recalculate.

Front   Rear
Standard
New 
Primary reduction ratio:
1st gear ratio: 2nd gear ratio:
3rd gear ratio: 4th gear ratio:
5th gear ratio:

6th gear ratio:

Rear tyre circumference:

 mm
Gear:
RPM: 
Speed 
Original secondary reduction ratio:
New secondary reduction ratio:

Change in speed at given RPM
Original speed @  rpm = km/h or mph
New speed @  rpm = km/h or mph
which is a difference of 
or

Change in RPM at given speed
Original rpm @ 
 = rpm
New rpm @ 
 = rpm 
which is a difference of 

Thanks to Metro Yamaha in Brisbane, Australia for getting me started.

Valves

The Amazing Valvulator™
Valve adjustment calculator

  • All default values are for a standard GPZ 1100 (95-).
  • Enter the current valve clearance and shim sizes.
  • Click on the Calculate button to see the proposed change in shim size and the resulting new clearance. 




	

		Exhaust (0. - 0. mm)
	

	

		 
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		4
	

	

		 
		left
		right
		 
		left
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		left
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			Current clearance: 
		
		
			0. 
		
		
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			0. 
		
		
			0. 
		
		   
		
			0. 
		
		
			0. 
		
		   
		
			0. 
		
		
			0. 
		
	

	

		
			Current shim thickness: 
		
		
			2. 
		
		
			2. 
		
		 
		
			2. 
		
		
			2. 
		
		 
		
			2. 
		
		
			2. 
		
		 
		
			2. 
		
		
			2. 
		
	


	

		
			New shim thickness: 
		
		
			2. 
		
		
			2. 
		
		 
		
			2. 
		
		
			2. 
		
		 
		
			2. 
		
		
			2. 
		
		 
		
			2. 
		
		
			2. 
		
	

	

		
			New valve clearance: 
		
		
			0. 
		
		
			0. 
		
		 
		
			0. 
		
		
			0. 
		
		 
		
			0.
		
		
			0. 
		
		 
		
			0. 
		
		
			0. 
		
	


	
   


	

		Intake (0. - 0. mm)
	

	

		 
		1
		 
		2
		 
		3
		 
		4
	

	

		 
		left
		right
		 
		left
		right
		 
		left
		right
		 
		left
		right
	


	

		
			Current clearance: 
		
		
			0. 
		
		
			0. 
		
		   
		
			0. 
		
		
			0. 
		
		   
		
			0. 
		
		
			0. 
		
		   
		
			0. 
		
		
			0. 
		
	

	

		
			Current shim thickness: 
		
		
			2. 
		
		
			2. 
		
		 
		
			2. 
		
		
			2. 
		
		 
		
			2. 
		
		
			2. 
		
		 
		
			2. 
		
		
			2. 
		
	


	

		
			New shim thickness: 
		
		
			2. 
		
		
			2. 
		
		 
		
			2. 
		
		
			2. 
		
		 
		
			2. 
		
		
			2. 
		
		 
		
			2. 
		
		
			2. 
		
	

	

		
			New valve clearance: 
		
		
			0. 
		
		
			0. 
		
		 
		
			0. 
		
		
			0. 
		
		 
		
			0. 
		
		
			0. 
		
		 
		
			0. 
		
		
			0. 
		
	

    
 
       
          
    


  


  



  
Volumes and viscosities

  



Tire size	
Front	
120/70-ZR17





	
Rear	
170/60-ZR17





Tire air pressure 	
Front 	
250 kPa (2,5kg/cm2, 36 psi)





	
Rear 	
290 kPa (2,9kg/cm2, 41 psi)





Engine Oil 	
Grade 	
SE, SF or SG class





	
Viscosity 	
SAE 10W40, 10W50, 20W40 or 20W50





	
Capacity 	
3,2 L (3,5 L when filter removed)





Oil Filter
Napa Gold
4941 (came with both o-rings)






Wix
 24941






STP
SMO12






Fram
CH6012






K&N
KN-401






Purolator
ML-16812





Spark Plugs 	
Standard 	
NGK CR9EK or ND U27ETR





	
Hotter 	
NGK CR8EK or ND U24ETR





	
Plug gap 	
0,7 - 0,8 mm





Coolant 	
Capacity 	
2,6 L





Chain 	
Type 	
112 links (OEM chain is an endless EK50UV-X)