e30isking Posted January 30, 2019 Posted January 30, 2019 Hi, Can someone tell me the acceptable valve stem diameter for the intake and exhaust valves? This should be in the workshop manual, maybe the service manual? Should be an interval in mm with 3 decimal places. This is for the 4 valve air cooled GSXs. Thanks! Quote
jameskat Posted January 30, 2019 Posted January 30, 2019 For a GSX1100S the service manual Inlet valve stem O.D. 5.460mm - 5.475mm Exhaust valve stem O.D. 5.445mm - 5.460mm Quote
e30isking Posted January 31, 2019 Author Posted January 31, 2019 Thanks James - that was quick! Quote
e30isking Posted February 20, 2019 Author Posted February 20, 2019 Hi again, Have another question. The 1100 had 27mm intake valves but what about the 1150? Were they 27,5mm? As far as I know the exhaust valves stayed the same in the 1100 and 1150... Thanks, Paulo Quote
e30isking Posted February 20, 2019 Author Posted February 20, 2019 Thanks a lot!! Do people usually use the GS1150 valves on the 1100? I am assuming the ports are also bigger / better flowing? Quote
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