Does anyone know if the ITR intake valves flow better than the GSR intake valves ? I know that there lighter but I was read up on them and according to what I have read the ITR valves have a better flow pattern or cone than the GSR valves. My question is this true ?

Also, if I do swap out the valves will I be able to just drop them in or would need to do some machine work to clean up the valve seats ?

 

You need to have a valve job done due to the differences in seat angle

 

Yes - the valve stem on an ITR is different than the GSR.

 

Thanks for the info guy

 

Anyone know how to tell the difference between R valves and gsr valves? are there any markings or anything

 

intake valves are deshrouded

 

30% lighter, you will notice that the valve near the base is much thinner compared to the GSR. Allows for slightly better airflow.

 

Not quite that much. Try 12% instead.