Combat with Norris RX camshaft

ILLF8ED · Jul 21, 2012

marinatlas said:
Hi David, did you made any progress in your tuning ?
As i have a spare RX cam on the bench, I had decided to build up another engine , he will have a combat head as you , i had just found a set of 750 cases , just missing now a cylinder , so soon I will put eveything on the bench and go , I will try to time that cam by the lobe center way, as it seems more accurate and more simple (that's what I had done previously with the Johnson's cam and later on with the JS cam, as I was a newbie in cam timing except the std commando set up , I had found that way much more simple , though I had tried to time them trough the valves , and check several times to find everytime some discrepancies.........but a newbie!), may be your ignition is not enough advanced , or your gas not flowing enough??

Only have the weekends to play with tuning. Saturday morning now, but off to the state fair with the family for the rest of the day. Sunday is City Bike day at the junction, back side of Mt Hamilton. Round trip about 125 miles, so will get in some more seat of the pants feeling if I like this cam's performance in the back country roads. Currently using 260 main jets in sleeved 932 Amals and RITA ignition set at 28BTDC max advance. Gas not flowing enough is something I've had concern. Using BAP taps that don't seem to flow that well. Will play with that tomorrow comparing performance with one open to two open.

Combat with Norris RX camshaft

ILLF8ED

Similar threads