skyguy5

Hi Gents, I am new to the forum. I have a R33 GTST '94 done about 112K. I gave my car for Serive yesterday and was told to change the timing belt. Does any1 know how many k's can the above model skyline do before it becomes a must to change it? Even though i have requested for it to be changed, I thought maybe it could be helpfull to have an understanding for me and for others in the forum Thanks Harry