Originally Posted by
keithtsr
Thanks David. I have my first one on the header. It runs erratic right now but I've only got about a 1/2 gallon of fuel through it.
Keith, when tapping the header, you ideally want to tap in the straight section of it beyond any rises or bends. Close to the coupler in other words. The gas flow in and around bends can be more turbulent and cause tank pressure to vary more than when tapping the pipe. But many engines including the Speed 13 run fine with header tapped pressure - at least mine does.
What engine is running erratic?
In the old days I would have a friend of mine tig a small block on the pipe then I would thread it. The NovaRossi pipe is kinda of bulky there so I give it a try.
Thanks again!
Yea, the NR pipes are quite chunky compared to say Macs. I think they are thicker than Hatori's too which are thicker than Macs. Actually, NR offered to provide tapped pipes if we wanted much like Hatori does (I think it was concluded there was no need). The tap is simply closed off with a provided screw if not used.
I plan to use more NR Rex pipes including the 45-57 size 50350 (on a Rossi 45 RE) and the 28 size 50041 (on the NR R528). I've attached a PDF of NR's pipes which are about 98% close to scale. They need minor tweaking for them to be 100% scale - just dimensional stuff. Handy when planning exhaust setups on plans - particularly with RE engines.
David