I thought the oil returned thru the pushrod tunnels?Are you asking about the thread size for the banjo fittings?
I never had to tap any of them, but I think that the small one is 8mm and the larger one is 10mm. I don't know the thread pitch, but with a 2002 it is likely going to be metric.Best way is to take the banjo to the hardware store and see what size nut threads on to it.
Got thread checkers here in the garage...just need my new Fireball head back! Know anyone who can help with that?
If your talking about the banjo bolts for the oil line, the metric ones are 8mm x 1.00. The British ones are 5/16 x 26. I think 2002 was close to a change over year from British to Metric. The threads are almost identical to look at. ERC
Thanks! Also interested in the junction between the case and the rocker feed line, if anyone happens to know how that works. Assumed it was threaded somehow too, but I could be way off...Wish I could just go mess with the bike and see, but the bike's out of my hands at the moment.Edit: Ah, right. So the case is male-threaded for the oil pipe nut to screw down on. That's what I thought. But does anyone know...what's that thread?http://bulletwala.com/genuine-royal-enfield-rocker-oil-feed-pipe-set-brand-new-part-no-144594.html#
That must be for a 350. I have never seen any 500 case with a fitting like that.All the 500 KS and ES cases that I have seen are female threaded into the case, and probably something like the 5/16" or 8mm size.In fact, I have never seen any oil line like that, ever.